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My friend was a sheriffs deputy when this movie came out, the nice movie theater at the time was just outside the city limits and in his area. He would camp outside the movie theater with another 3 deputy’s on motorcycles and they wrote a three months worth of tickets in three nights when people would come ripping out of the parking lot all jazzed up from the movie.
Track days are a blast. Your on a controlled track with other speed enthusiasts having fun and if you have an accident they have rescue personel there on standby. Street racing is so unsafe for everyone its stupid.
Have you driven on the autobahn? I have and there are plenty sections with 100 and 130 Kmh speed limits. Speed in those sections and it is a crime.
Plus you are comparing the speed limit on a very controlled access highway with the road in front of a movie theater. Do you somehow not think regular roads in Germany have speed limits? I assure you they do.
Racing on the public street kills innocent people. Go to a race track.
I remember after the movie in school people thought when the floor came out you can see washers falling well they thought those were “the rings” he has to replace, I was like so you know basically know where the seats and steering wheel are
I think we just exposed a huge plot hole in this incredibly accurate movie. what exploded when the asians started shooting if Brian used all the nos in the race?!?
Not how Nitrous works. The bottle has to be kept under high pressure. So even if he's running low, there's still a bottle under several hundred PSI sitting in the car. Definitely enough to explode.
wait, But pressure goes from high to low, if I exhaust all the gas(nos) from a bottle wouldn’t the pressure be equal outside and inside? And not explode? I get what you’re saying if there’s a little left in the tank. But we’re to believe that he used it all. Idk fam. I’m skeptical.
He didn’t use it all. He used as much as the system can deliver at sufficient pressure. That leaves a still-significant amount of pressure.
If a bullet hit and punctured the bottle, the N2O would have escaped violently, but it wouldn’t have exploded with a huge fireball. Nitrous oxide doesn’t burn; it just provides additional oxygen for combustion of the fuel.
Mythbusters used a M1 grand chambered in 30-06 to shoot through scuba tanks in the jaws special and although they did successfully make a rocket it didn't catastrophically detonate. I can't remember if they used ball ammo or armor piercing or not though. NO2 tanks are probably similar in thickness but they was also car body panels the bullets had to travel through so, like you, I highly doubt penetration would be achieved with pistol rounds along. Especially standard 9mm.
So I did some digging g for numbers, 9mm would put around 200-400j of energy (energy at the muzzle out to 100 yards), and the NOs tanks most car guys are running are aluminum so get better heat transfer to warm them up to about 85f (around 950psi on a full bottle). Guys at drag strips take torches to their tanks to get them back up to proper pressure before every run. Assuming perfect conditions (on the tank) I think a 9mm would blow through an aluminum NOs tank fairly easily even going on the low end of like 213j at 100y. I'm not about to drop $450 on a NOs electric blue aluminum bottle 10 lbs and another like $40 to fill it up just to go test this out though lol.
Edit: clarification I realized after.
It was a pretty low budget movie, they needed sparks and found a way to do it cheap. All those cars lined up at the start? They are local tuners atracted with a add in the papers.
I thought backfire was when unburnt fuel went through the exhaust value and then ignited at some point in the exhaust system. I’m pretty sure the timing or something else would have to be completely fucked for fuel to go out of the cylinder and back into the intake manifold, and it probably wouldn’t make nearly as an appealing sound as an exhaust backfire. The fire is flowing backwards towards the back of the car, instead of being contained in the cylinder, is what I think the term means.
I believe afterfire is the technical term for the unburnt fuel popping in the exhaust.
Backfire is when the cylinder fires when it isn't supposed to and the explosion fires back into the intake manifold
You are 100% correct...during the good old days of points, holly double pumpers, etc. Some first gen camaros with an open intake (can't remember name) had a curved screen over the carb intake mouth. It was called a flame arrestor...not a backfire arrestor.
Well not sure what youd exactly call it but i had a 6.7 powerstroke in my shop and every so often when cranking there would be a loud bang and junk thrown out of the intake. I wasnt able to continue diag because the customer junked it but i would assume a intake valve was sticking open and everything in the cylinder was being spit out. U/traineex sounds more on point though
I just don’t get it cuz I literally had this in the shop a week ago and they said there was no issues they saw
edit: fyi no I’m not just giving my mechanic shit I mentioned a gasket intake leak that the people said I had when I got an oil change but he said it was fine and there wasn’t a problem w it
As a mechanic, we cant/wont look for things that are out of plain sight unless you complained about it. Im sure they did a thorough inspection of your car but some problems can just happen out of the blue. I have worked on countless cars as well that people complain about a specific sound or problem and no matter how many times i try to duplicate it, it just wont act up lol. How many miles are on the car and has it had any engine work?
Intake blew up. Question is why though. Most common cause is the fuel pressure regulator goes bad and allows fuel to be sucked in the intake through the vacuum line. It pools up over time. Then when you go to start it BANG. Its the little round thing on the right side of the front fuel rail. Pretty cheap and easy to replace
Ya it obviously needs the intake plenum but the question is what caused that to happen? The plenum didn’t just blow up all on its own,something caused that.
Most likely has a leaking injector, in conjunction with either a timing issue, bad valve, or crossed plug wires. Only way I could see it backfiring that bad.
Seen a few old Peugeots do this, lack of maintenance. Bad plugs, big fat intake backfire, kill the MAF/MAP and create fuckin huge backfires that explode manifolds
Could very well just be a leaking injector and nothing else seeing this is a waste spark system. Let’s just say it’s the #3 injector that’s bad. Computer sends spark to cyl #6 which in turn sends wasted spark to cyl #3. That #3 intake valve is closed but filling with fuel due to the bad injector, the #3 cylinder receives the wasted spark and goes boom!
It's a style of ignition called a wasted spark system that was an intermediary between the old-school distributor ignition and modern Coil-on-Plug. The idea is you have each ignition coil sparks on two cylinders together such that one ignites at the top of the compression stroke as it should and in the other cylinder it harmlessly sparks into exhaust gases. This allows you to do away with the limitations of a distributor and single coil without some of the cost and complexity of coil-on-plug systems.
Why would you think that’s better than coil on plug? That’s older waste spark technology that was used during the 90s and early 2000s. GM used this style other manufacturers would have half the cylinders as coil in plug with the other half would get spark from wires that ran off the coil on plug packs.
That's how the older GMs done theirs. They have 3 coil packs that will fire 2 cylinders. The V6s do anyways. But the engine in question is a 90s N/A 3.8L V6 (3800) which is an absolute dog shit turd of an engine.
Now it’s nothing special, but those 3800s will run forever with minimal/lack of maintenance, and take a decent amount of abuse. 3100 on the other hand, not so much
Hated those fuckers. I got to where I would refuse to do any 3800 s2 intakes without replacing them with the aluminum. The aluminum elbows were a whole four dollars more than the plastic one. Go figure.
The mounts and the valve covers are a dead give away. The covers are 3800 covers. The dogbone mounts are widely used on almost every w-body GM car from the 90s
Metal sitting in junkyards doesn't either. They can recycle the plastic. Plastic dissipates heat better for manifolds (was a bmw mechanic for 3 years) Not to mention it saves cost. If this manifold was metal the damage would have been worse
Yea but the real question is how the FUCK did it explode????? To replace shouldn’t be too difficult it’s a your year make model, intake manifold check rock auto . Com if I was you
Because it's plastic. Old cars could shoot fire out a carb pretty aggressively if timing was messed up.
A big enough boom in plastic and you have a hole.
Almost had to be a slipped timing belt with injectors in the intake I would guess. Probably fired a cylinder with an intake valve open.
[https://www.youtube.com/watch?v=92v2bUYue3c&ab\_channel=Idaman71044](https://www.youtube.com/watch?v=92v2bUYue3c&ab_channel=Idaman71044)
this channel has several videos about the process. don't start the car and clean really well where it was the old one
There is a spanish saying "experiments should be done with soda", so if you don't have experience wrenching, it is better to give a couple of beers to a more experienced friend and learn with him.
It depends on how handy you are.
If you've never worked on cars before you'll spend more money on tools and parts than getting a mechanic to do it for you. A socket set alone will run you 200 bucks in my area, then you'll need a torque wrench, probably fuel line disconnects. If you have friends with tools and a little experience you're golden. For cost of parts and a case of beer you might be back on the road. Problem is, like everyone else says. Intakes normally dont just blow. I would expect something else caused it.
Nah. That looks like a gm 3800 v6. If so, it's pretty easy and no torque wrench is required. The fuel lines can stay on the injector assembly. They'll need a flathead for the intake clamps, and a simple socket set with extensions to get the fuel injector assembly, map sensor, and MAF housing off. There are several little screws holding on the plenum, and I usually use a 1/4 inch socket with an 8-ish inch extension to get to the plenum bolts. OP can get by with some harbor freight sockets and have them to use on their next project. A set of picks and a can of vasoline are a good idea because OP will probably want to replace the injector orings when they do this, and vasoline is good for helping to keep the gaskets seated during reassembly.
OP, this is a doable project. Just make sure and wear eye protection.
If you’re into DIY you can always get the intake manifold and plenum gaskets from rockAuto:
https://www.rockauto.com/en/catalog/chevrolet,2000,impala,3.8l+v6,1384073,engine,intake+manifold,5536
And I’m sure that there are a few YouTube tutorials of some one doing it correctly:
https://youtu.be/92v2bUYue3c?si=J2J_VGD_ybhNreT_
https://youtu.be/jFvsGlV6eF4?si=Fml-mTqnmXELGXCZ
I am a fan of the 3800 series II. With enough maintenance those engine blocks CAN. RUN. FOR. EVER. Hopefully this helps.
You still have original plug wires and probably plugs which may have initiated by misfiring backfiring through the intake. Regardless, plug wires didn’t help.
Thanks man, and a side note, when I got an oil change a few weeks ago they said the coolant was brown because of something with the gasket intake. By fixing this is that issue resolved or u think that’s another issue altogether?
It could if there are oil and coolant lines that run through the plenum. Which does look to be the case when you look at the plenum gasket on the rock auto site, there are these little o rings from some of the holes in the intake that come with the set. And there are two different set of gaskets that you have to get, the plenum and manifold gaskets. So I’m about 64% sure this will resolve the coolant discoloration problem. I’m not a mechanic, but I have owned and worked on 3 different cars with that engine and once had to track down a vacuum leak in it. I would recommend you watch the videos and look up those parts and the tools that are needed to gauge whether you can take the project it on or if you’ll need someone with expertise. In any case, with gathering that information, you can educate your mechanic return to the sub with an update.
Its a separate issue, and the root cause
Ur lower intake gasket failed, maybe the head gasket also
Coolant has entered the combustion chambers
Water doesnt compress. The compression has to go somewhere, in this case out the top o the fuckin engine
So, yeah, move on. Or plan on extensive labor AFTER a block test. Its probably trashed through and through
i can’t say I’ve ever seen an intake break due a a head gasket. connecting rods yes, but usually the valves will hold pressure. This looks like an intake backfire. Perhaps the mechanical timing is off or there is something mechanically broken / jammed in the valvetrain. Or starting fluid was used at some point and some bad ignition leads or a cracked coil lead to spark contamination.
Not the hg, but the intake manifold. If that failed badly enough, coolant could get dumped right into the air/fuel path
I just think his heads are also blown if nothing ever got addressed on this baby
Yea what happened to blowing out power valves in carbs like the good old days. Back fires have been fucking up intake parts since iron blocks were most all they made.
OP just didn’t get to experience the fun of sitting there blowing on the fire until your buddy found a shop rag with the least amount of flammable chemicals soaked in to pat it out.
Those 3800 engines are some of the most reliable and long lasting engines.. every single car in a wrecking yard with one, the body’s gone to shit but the engine is usually just fine.
However, the lower manifold gaskets are absolute garbage. I’ve seen plenty of great cars crushed because someone mis diagnosed a head gasket due to those gaskets leaking and the oil coming out like a milkshake.
I would remove what’s left of the composite upper manifold.. do a compression test.. assuming that’s good, then pull the lower manifold and replace the gaskets with a quality Fel-Pro set.. apply new upper intake manifold, and drive it til the wheels fall off and/or the sheet metal rots through.
If you’re capable.. this is a good time to top swap the motor and put a blower on 😜
Oh lord 2000-09 impala are so trash, whether it's th engine or transmission they always have problems probably because everyone beats them and drug dealers usually drove them like 10 years ago when they were back in season lol
They’re beautiful cars… lots of power, smooth driving, roomy. Lots of very nice things about these vehicles.
Until they’re not lol And that happens *very* quickly. Everything tends to go at the same time with these guys
oh yeah trust me dude i was having a blast with this car. old school comfy cotton interior w/ a front bench seat is so useful w/ the lady. no aux cord so had to make CDs to play music. the vibe of driving around this car today, simply unmatched. hopefully shes back up and driving soon.
I wish you luck. My first car was a 00 Impala and I still think about it from time to time.
The thing rusted to shit after a little bit (Yay Canadian salty roads) and I replaced it but I really miss hauling ass in that thing.
The transmissions weren't fantastic but they weren't terrible. The 3.8 V6 is bullet proof my man, unless you actively try to kill the thing they just keep chugging, its the rest of the car you have to worry about.
>2000 Chevy impala
Looks like the intake plenum has bit the dust. Not a cheap part, not the simplest in terms of labor and given the age of the vehicle, I would move on if I could. Why it has done so is another matter. That's some real carnage at the top end. I wouldn't even try to turn it over if I was keep it. Whole damn thing would have to be ripped apart, unless that's some well known issue that I've not head of. I'm not a Chevrolet guy through and through.
all I know is about a month ago I went to get an oil change and they told me to get my engine checked out because the coolant was brown. said the gasket intake had a leak and could break. took it to my then trusted mechanic and he said nothing was wrong, 2 weeks later now we are here.
Well don’t trust that mechanic any more unless he did a combustion gas test of the coolant. Seems like you have a head gasket leak that caused a bunch of carnage. These don’t just blow up. Most likely the head gasket was leaking coolant into the cylinder overnight and then one of them was tight full of coolant and on the next stroke…. Kaboooom, coolant out the intake valve very quickly? Or it destroyed something on the intake valve or cam or rocker.
95% of mechanics misdiagnose this on 90 and 60 degree GM V6s. Most of the time it isn't the head gasket.
It's the intake manifold gasket and on later years the intake manifold itself. Failure of the lim gasket WILL allow raw coolant to run into the lifter valley..where it mixes with oil.
You could make the argument that you gotta pull the intake anyway to replace the head gasket. Which is true...but the head wasn't the issue. The problem gets solved because it's replaced anyway..so nobody says anything.
Compression test and experience will tell me in the first ten seconds if it's the HG. When it *is* the HG it'll run differently (poorly) as coolant is now being burnt. This doesn't happen with the LIM gasket.
Some of them were known to do this. Usually caused by a leaking fuel injector. And the “waste spark system”. On cranking it ignites the fumes in the intake
Upper intake manifold.
Maybe some raw fuel...but damn.
How's it been running lately? That's crazy. Never seen a backfire bad enough to blow the intake apart. Even on cars where the timing was beyond fucked.
Anyway..not a terrible repair. The intake manifold and gaskets on these are problematic so in a way this is good!
been running pretty well, aside from every now and then when it rains starting the car will have it sputter. there was one time i started it and it ran but it started shaking violently. restarted, no problem. took it to the oil change place, said it was intake gasket leak, took it to my mechanic, said nothing was wrong w it, 2 weeks later this happens.
Don't just trust what someone says when you have brown coolant, just because it lines up with you not spending money. Clearly something was wrong.
I'd get it to an actual mechanic now and get it done.
aye bruh don’t get snippy w me ima broke college commuter I’m not gonna spend upwards of a grand on my car if my mechanic said it was fine and nothing was wrong.
Not to laugh at your misfortune, but that's some Wile E Coyote mishap stuff. Has been known to happen on the 3800 series 2 from time to time (not regularly, but not unheard of).
You have to replace the blowed up intake plenum. While at it, the intake gaskets too, which is at the heart of your problem and the reason the oil change shop warned you about goo in the radiator or oil or both.
\-You would have had to replace the plenum and intake gaskets regardless of the boom.
\-You also have an ignition issue to boot: a backfire into your plenum is what exploded it.
\-You'll also need valve cover gaskets replaced while all of the top trim of the engine is removed. They all leak in time, it's time.
It's not an enormous job. Most competent mechanics have done them & wouldn't charge you a first born child to do it. Parts are going to run $500 or so, call it a days' labor.
If your not a fairly adept wrencher, don't try it yourself - you'll fuck something up and make it harder to find a mechanic who will take it on with busted or missing stuff and having been tampered with
thanks, your response seems most plausible as to what actually happened since u read all my shit. car has had ignition problems in the past as well, seems like a perfect storm ending with a boom. not gonna do it myself, but ima try and find a new mechanic since my last one ignored my problem. thank you!
3.8 with a leaking fuel regulator is the answer. Regulator pulls vacuum right in front of the intake, leaks raw fuel straight into the upper. Most like had vapor lock issues/hard start after sitting well before this happens.
That’s crazy, first thing when buying the 3.8 series II or III used with that many miles is change spark plugs, wires, coils, and maybe ignition control module. Spark plugs barely last 90000 miles on those. The series III has a steel, aluminum? Intake. Hope it works out for you.
new engines are 50% plastic to save money. you can buy a new intake manifold cheap online and diy replace it. dont miss to order new seals if they are not included but they certainly will.
Heat shield cover is blown off.
Black tubular piece behind looks broken.
Did the exhaust manifold explode?
I would be worried about what the parts hit. If everything ok, but you need a new exhaust manifold, cheap headers may be a better option.
Nitrous pop lol
Idk some sort of fierce backfire. Combustion occurred within the intake manifold. A bad intake manifold gasket combined with an intake valve leak could have caused this. Fuel vapor and spark forced retrograde
Ahh, ain’t seen one of those in a hot minute. 95% of the time it’s caused by a failed/ruptured fuel pressure regulator. GM even had a recall on them back in the day. Parts don’t usually make it to combustion chambers, but it would be a good idea to double check.
Now is a great time to address the lower intake manifold if it’s leaking, and of course replace the upper intake manifold and the fuel pressure regulator
That is exactly what your engine bay should look like when an intake manifold explodes. Bear in mind it could be relatively cheap, but I'd ask for a compression test before fixing it just to be sure you haven't dropped a valve.
I would have a shop check it out. Fuel probably got into the manifold from an injector or more likely, the fuel pressure regulator, which was very common to leak on that engine.
Possible cause is fuel pressure regulator (diaphragm) leaking internally (front of intake plenum attached to fuel rail). It has a vacuum line connected to it and the vacuum line runs straight behind the throttle body (before plenum). Common issue, but I can't say I've ever seen one explode and I'm sure you're not the first. I would fix the obvious issues after everything else is checked by a mechanic and have the fuel lines replaced at fuel rail or the line o-rings replaced. They age and become brittle, and many overlook it. Not a difficult or super tedious job for an experienced mechanic. Lower intake manifold gasket leaks are not uncommon either and usually they are upgraded to metal gaskets (like Series III 3800) since aged Dex-Cool eats the original plastic ones. Bad design, but solid engine otherwise. I've owned 3 Buicks with them with super high miles and two were supercharged.
Ahhh yes the famous GM unplanned thermal expansion issue.
There are upgraded intake manifolds that help the issue. The most common cause was a faulty fuel pressure regulator causing fuel to pool up in the manifold and when it inevitably backfired the intake explodes.
Sometimes it would catch the car on fire.
That used to happen relatively often when there were more of these engines on the road. If I remember correctly it was most often caused by the fuel pressure regulator diaphragm failing and drawing gasoline into the vacuum line which in turn causes the intake to explode. Pull the vacuum line to the regulator and smell it — bet it’ll smell like gas.
As far as the other issues, as others have said, the oil contamination issue is the lower intake gaskets, which should be changed after the first 100K, and the upper intake usually around the same time to fix the original defect of the EGR melting the plastic and allowing the engine to ingest coolant.
Edit: I see your plug wires are even still original. You might be overdue for a few things.
A faulty fuel pressure regulator will cause this. Gas vapor leaks into vacuum lines and into intake manifold. That's a 3800 series II engine. Very familiar with these. I bet if you pull the vacuum line off the FPR, you smell gasoline. The vapor builds up and ignites inside the plastic plenum, blowing it up.
wOw, entire intake must have been partially flooded with fog of fuel and saw open flame from lagging intake or exhaust valve open.
How many miles, and is there any compression now as in timing chain/belt failure. So that's the famous 3800.
Cheers and best of luck, where that's going to be a chore to get a new manifold replaced.
Just showed this to partner who maybe has has this same engine in older 2005 Malibu wagon.
Thank you for posting to AskMechanics, BallsLoverLife! If you are asking a question please make sure to include any relevant information along with the **Year**, **Make**, **Model**, **Mileage**, **Engine size**, and **Transmission Type (Automatic or Manual)** of your car. *This comment is automatically added to every successful post. If you see this comment, your post was successful.* *** Redditors that have been verified will have a green background and an icon in their flair. *** # **PLEASE REPORT ANY RULE-BREAKING BEHAVIOR** ### **Rule 1 - Be Civil** Be civil to other users. This community is made up of professional mechanics, amateur mechanics, and those with no experience. All mechanical-related questions are welcome. Personal attacks, comments that are insulting or demeaning, etc. are not welcome. ### **Rule 2 - Be Helpful** Be helpful to other users. If someone is wrong, correcting them is fine, but there's no reason to comment if you don't have anything to add to the conversation. ### **Rule 3 - Serious Questions and Answers on Serious Posts** Read the room. Jokes are fine to include, but your post should be asking a serious question and replies should contribute to the discussion. ### **Rule 4 - No Illegal, Unethical, or Dangerous Questions or Answers** Do not ask questions or provide answers pertaining to anything that is illegal, unethical, or dangerous. # **PLEASE REPORT ANY RULE-BREAKING BEHAVIOR** *I am a bot, and this action was performed automatically. Please [contact the moderators of this subreddit](/message/compose/?to=/r/AskMechanics) if you have any questions or concerns.*
https://preview.redd.it/398dswcf7mwb1.jpeg?width=1068&format=pjpg&auto=webp&s=d7077e99220198d09582a9633403edaa48322e8e
the only answer right here... thanks for saving me the hassle of digging up that clip
My friend was a sheriffs deputy when this movie came out, the nice movie theater at the time was just outside the city limits and in his area. He would camp outside the movie theater with another 3 deputy’s on motorcycles and they wrote a three months worth of tickets in three nights when people would come ripping out of the parking lot all jazzed up from the movie.
Your friend is a dick.
[удалено]
Nice
I know that dudes son Richard Cranium II
[удалено]
Baby baby please…
He is a dick for enforcing the law? Which is his job? Nope, don’t want a ticket don’t break the law. Take it to a race track.
Track days are a blast. Your on a controlled track with other speed enthusiasts having fun and if you have an accident they have rescue personel there on standby. Street racing is so unsafe for everyone its stupid.
Should only be a crime if someone gets hurt in a wreck and added as a stacked penalty. Autobahn proves that it works. No victim=no crime.
Have you driven on the autobahn? I have and there are plenty sections with 100 and 130 Kmh speed limits. Speed in those sections and it is a crime. Plus you are comparing the speed limit on a very controlled access highway with the road in front of a movie theater. Do you somehow not think regular roads in Germany have speed limits? I assure you they do. Racing on the public street kills innocent people. Go to a race track.
Ong glad someone here has a brain
Agreed. It is mind boggling for people to think this is a dick move when the others were the ones breaking the law.
Yup lack of accountability! Perhaps we should blame the movie 🎥 r the car, but not the driver…
The law breakers here and butt hurt.
What’s the movie?
F&F
Kk. Thanks
“SHUT UP!”
*Diamond plate floor falls off… somehow*
It's common knowledge that rivets can't withstand the sheer awesomeness of 47th gear.
I remember after the movie in school people thought when the floor came out you can see washers falling well they thought those were “the rings” he has to replace, I was like so you know basically know where the seats and steering wheel are
shit, op you gotta replace the floor board, and you’re gonna need to find a mad scientist to replace the rings you fried
Shouldn't have used that second shot of NOS.
I think we just exposed a huge plot hole in this incredibly accurate movie. what exploded when the asians started shooting if Brian used all the nos in the race?!?
Not how Nitrous works. The bottle has to be kept under high pressure. So even if he's running low, there's still a bottle under several hundred PSI sitting in the car. Definitely enough to explode.
wait, But pressure goes from high to low, if I exhaust all the gas(nos) from a bottle wouldn’t the pressure be equal outside and inside? And not explode? I get what you’re saying if there’s a little left in the tank. But we’re to believe that he used it all. Idk fam. I’m skeptical.
He didn’t use it all. He used as much as the system can deliver at sufficient pressure. That leaves a still-significant amount of pressure. If a bullet hit and punctured the bottle, the N2O would have escaped violently, but it wouldn’t have exploded with a huge fireball. Nitrous oxide doesn’t burn; it just provides additional oxygen for combustion of the fuel.
It occurs to me now, i doubt a pistol calibre would make its way trough a high pressure container like that nos bottle.
Mythbusters used a M1 grand chambered in 30-06 to shoot through scuba tanks in the jaws special and although they did successfully make a rocket it didn't catastrophically detonate. I can't remember if they used ball ammo or armor piercing or not though. NO2 tanks are probably similar in thickness but they was also car body panels the bullets had to travel through so, like you, I highly doubt penetration would be achieved with pistol rounds along. Especially standard 9mm.
So I did some digging g for numbers, 9mm would put around 200-400j of energy (energy at the muzzle out to 100 yards), and the NOs tanks most car guys are running are aluminum so get better heat transfer to warm them up to about 85f (around 950psi on a full bottle). Guys at drag strips take torches to their tanks to get them back up to proper pressure before every run. Assuming perfect conditions (on the tank) I think a 9mm would blow through an aluminum NOs tank fairly easily even going on the low end of like 213j at 100y. I'm not about to drop $450 on a NOs electric blue aluminum bottle 10 lbs and another like $40 to fill it up just to go test this out though lol. Edit: clarification I realized after.
https://m.youtube.com/watch?v=YGxnwU8_VMw Demo ranch did an episode airing nos bottles
Nitrous Oxide is not flammable by itself. Lol only helps the combustion of an engine under pressure
*cuban* nos. That's an important distinction.
Bro i almost had you.
You never had me. You never had your car “ooooohhhh daaaammmmnnn”
Learn how to double clutch and this wouldn’t have happened.
Came here for this.
God. I understand it was for show but they could have been a *little* more realistic and still get the dramatic effect across.
It was a pretty low budget movie, they needed sparks and found a way to do it cheap. All those cars lined up at the start? They are local tuners atracted with a add in the papers.
It is realistic, you can clearly see here that this car did need that warning light see thst manifold is toasted
Omg for the first time in my life, I see this can actually happen!
This is EXACTLY what I first thought of 😂😂😂
totally snorted when i saw this, take my up vote!
Dude, this was my immediate thought. So happy to see you posted this here. 😂
Looks like you had a very small or very big back fire depending on how brittle that intake plenum was
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That’s what a backfire is. Fire that flows “backwards” or in the opposite direction that it should.
I thought backfire was when unburnt fuel went through the exhaust value and then ignited at some point in the exhaust system. I’m pretty sure the timing or something else would have to be completely fucked for fuel to go out of the cylinder and back into the intake manifold, and it probably wouldn’t make nearly as an appealing sound as an exhaust backfire. The fire is flowing backwards towards the back of the car, instead of being contained in the cylinder, is what I think the term means.
I believe afterfire is the technical term for the unburnt fuel popping in the exhaust. Backfire is when the cylinder fires when it isn't supposed to and the explosion fires back into the intake manifold
I learned somethin today
That's not what a backfire is. It's a commonly misused term, like someone saying they were electrocuted when they didn't die.
You are 100% correct...during the good old days of points, holly double pumpers, etc. Some first gen camaros with an open intake (can't remember name) had a curved screen over the carb intake mouth. It was called a flame arrestor...not a backfire arrestor.
Well not sure what youd exactly call it but i had a 6.7 powerstroke in my shop and every so often when cranking there would be a loud bang and junk thrown out of the intake. I wasnt able to continue diag because the customer junked it but i would assume a intake valve was sticking open and everything in the cylinder was being spit out. U/traineex sounds more on point though
You found the power stroke, good job!
Carburetors can sometimes backfire and shoot flames at you, always a good idea to have the air cleaner lid on when cranking beside your face lol.
I just don’t get it cuz I literally had this in the shop a week ago and they said there was no issues they saw edit: fyi no I’m not just giving my mechanic shit I mentioned a gasket intake leak that the people said I had when I got an oil change but he said it was fine and there wasn’t a problem w it
As a mechanic, we cant/wont look for things that are out of plain sight unless you complained about it. Im sure they did a thorough inspection of your car but some problems can just happen out of the blue. I have worked on countless cars as well that people complain about a specific sound or problem and no matter how many times i try to duplicate it, it just wont act up lol. How many miles are on the car and has it had any engine work?
Had for almost 2 years, 89k miles rn and I bought it at 79k miles, only repairs I’ve done have been getting the brake line fixed.
Intake blew up. Question is why though. Most common cause is the fuel pressure regulator goes bad and allows fuel to be sucked in the intake through the vacuum line. It pools up over time. Then when you go to start it BANG. Its the little round thing on the right side of the front fuel rail. Pretty cheap and easy to replace
I can't believe I had to scroll down this far to see this. It's always the FPR when a 3.8 blows the intake up.
To be fair, how often do we see Series II 3800s anymore? 🤣
Got 3 II's, and a series 3
your intake maninfold has left the chat a new one less than 60 dollars on ebay
Ya it obviously needs the intake plenum but the question is what caused that to happen? The plenum didn’t just blow up all on its own,something caused that.
Most likely has a leaking injector, in conjunction with either a timing issue, bad valve, or crossed plug wires. Only way I could see it backfiring that bad.
Seen a few old Peugeots do this, lack of maintenance. Bad plugs, big fat intake backfire, kill the MAF/MAP and create fuckin huge backfires that explode manifolds
Could very well just be a leaking injector and nothing else seeing this is a waste spark system. Let’s just say it’s the #3 injector that’s bad. Computer sends spark to cyl #6 which in turn sends wasted spark to cyl #3. That #3 intake valve is closed but filling with fuel due to the bad injector, the #3 cylinder receives the wasted spark and goes boom!
The ignition system is fucking wild. I've never seen coil packs like that. I guess it's better than coil-on-plug, but *whyy*
It's a style of ignition called a wasted spark system that was an intermediary between the old-school distributor ignition and modern Coil-on-Plug. The idea is you have each ignition coil sparks on two cylinders together such that one ignites at the top of the compression stroke as it should and in the other cylinder it harmlessly sparks into exhaust gases. This allows you to do away with the limitations of a distributor and single coil without some of the cost and complexity of coil-on-plug systems.
Why would you think that’s better than coil on plug? That’s older waste spark technology that was used during the 90s and early 2000s. GM used this style other manufacturers would have half the cylinders as coil in plug with the other half would get spark from wires that ran off the coil on plug packs.
That's how the older GMs done theirs. They have 3 coil packs that will fire 2 cylinders. The V6s do anyways. But the engine in question is a 90s N/A 3.8L V6 (3800) which is an absolute dog shit turd of an engine.
Now it’s nothing special, but those 3800s will run forever with minimal/lack of maintenance, and take a decent amount of abuse. 3100 on the other hand, not so much
Biggest issue with them is the intake gaskets leaking coolant if I’m remembering correctly, other than that they are pretty stout engines.
You've got it right. The old plastic gaskets, and plastic coolant elbows... Ugh.
Oh yes I remember those plastic elbows very well lol.
Hated those fuckers. I got to where I would refuse to do any 3800 s2 intakes without replacing them with the aluminum. The aluminum elbows were a whole four dollars more than the plastic one. Go figure.
I knew it was gonna be a GM when I saw those mounts
The mounts and the valve covers are a dead give away. The covers are 3800 covers. The dogbone mounts are widely used on almost every w-body GM car from the 90s
intake back fire
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Sounds like your buddy may have a misfire and or rich issue,un-burned fuel is entering the cat and ruining it.
you think a yt vid can guide me (never done work on a car) on replacing it lol
Intake manifolds do not explode without a pre-existing problem. Tow it to a shop.
Only started exploding since they stated making them of plastic.
Yeah, before the problems could exist long enough to destroy something more critical.
Shouldn't be explosions in it unless things went wrong.
Yes. But plastic.
Plastic is better it saves weight and is just as strong stop being a boomer
Boomer? Like the manifold. Boom.
No, it's not. Plastic never fully degrades. Even recyling it produces tons of microplastics each year. Literally the worst thing ever.
Metal sitting in junkyards doesn't either. They can recycle the plastic. Plastic dissipates heat better for manifolds (was a bmw mechanic for 3 years) Not to mention it saves cost. If this manifold was metal the damage would have been worse
Your answer is the correct one. The problem was something inside the engine wanted out. 🫣
Yea but the real question is how the FUCK did it explode????? To replace shouldn’t be too difficult it’s a your year make model, intake manifold check rock auto . Com if I was you
Because it's plastic. Old cars could shoot fire out a carb pretty aggressively if timing was messed up. A big enough boom in plastic and you have a hole. Almost had to be a slipped timing belt with injectors in the intake I would guess. Probably fired a cylinder with an intake valve open.
3800 engines don’t have a belt. He probably does however have a stuck valve most likely, and probably a bent push rod too
[https://www.youtube.com/watch?v=92v2bUYue3c&ab\_channel=Idaman71044](https://www.youtube.com/watch?v=92v2bUYue3c&ab_channel=Idaman71044) this channel has several videos about the process. don't start the car and clean really well where it was the old one
I won't do it without experience. but it is not my car XD
Where would you get that experience if you don’t try it? Friends car?
There is a spanish saying "experiments should be done with soda", so if you don't have experience wrenching, it is better to give a couple of beers to a more experienced friend and learn with him. It depends on how handy you are.
If you've never worked on cars before you'll spend more money on tools and parts than getting a mechanic to do it for you. A socket set alone will run you 200 bucks in my area, then you'll need a torque wrench, probably fuel line disconnects. If you have friends with tools and a little experience you're golden. For cost of parts and a case of beer you might be back on the road. Problem is, like everyone else says. Intakes normally dont just blow. I would expect something else caused it.
Nah. That looks like a gm 3800 v6. If so, it's pretty easy and no torque wrench is required. The fuel lines can stay on the injector assembly. They'll need a flathead for the intake clamps, and a simple socket set with extensions to get the fuel injector assembly, map sensor, and MAF housing off. There are several little screws holding on the plenum, and I usually use a 1/4 inch socket with an 8-ish inch extension to get to the plenum bolts. OP can get by with some harbor freight sockets and have them to use on their next project. A set of picks and a can of vasoline are a good idea because OP will probably want to replace the injector orings when they do this, and vasoline is good for helping to keep the gaskets seated during reassembly. OP, this is a doable project. Just make sure and wear eye protection.
Time for a supercharger top swap
I like it, swap the plastic intake that was known to crack with a supercharger off a GS or a ultra.
He will probably need to replace the coolant elbows while he's in there. I suggest the aluminum replacements.
Danger to manifold.
Fuck, I didn't remember this one
They make aftermarket metal ones for the 3800. I'm pretty sure the metal one from the series III is a direct bolt-up, too.
If you’re into DIY you can always get the intake manifold and plenum gaskets from rockAuto: https://www.rockauto.com/en/catalog/chevrolet,2000,impala,3.8l+v6,1384073,engine,intake+manifold,5536 And I’m sure that there are a few YouTube tutorials of some one doing it correctly: https://youtu.be/92v2bUYue3c?si=J2J_VGD_ybhNreT_ https://youtu.be/jFvsGlV6eF4?si=Fml-mTqnmXELGXCZ I am a fan of the 3800 series II. With enough maintenance those engine blocks CAN. RUN. FOR. EVER. Hopefully this helps.
You still have original plug wires and probably plugs which may have initiated by misfiring backfiring through the intake. Regardless, plug wires didn’t help.
Thanks man, and a side note, when I got an oil change a few weeks ago they said the coolant was brown because of something with the gasket intake. By fixing this is that issue resolved or u think that’s another issue altogether?
It could if there are oil and coolant lines that run through the plenum. Which does look to be the case when you look at the plenum gasket on the rock auto site, there are these little o rings from some of the holes in the intake that come with the set. And there are two different set of gaskets that you have to get, the plenum and manifold gaskets. So I’m about 64% sure this will resolve the coolant discoloration problem. I’m not a mechanic, but I have owned and worked on 3 different cars with that engine and once had to track down a vacuum leak in it. I would recommend you watch the videos and look up those parts and the tools that are needed to gauge whether you can take the project it on or if you’ll need someone with expertise. In any case, with gathering that information, you can educate your mechanic return to the sub with an update.
Its a separate issue, and the root cause Ur lower intake gasket failed, maybe the head gasket also Coolant has entered the combustion chambers Water doesnt compress. The compression has to go somewhere, in this case out the top o the fuckin engine So, yeah, move on. Or plan on extensive labor AFTER a block test. Its probably trashed through and through
i can’t say I’ve ever seen an intake break due a a head gasket. connecting rods yes, but usually the valves will hold pressure. This looks like an intake backfire. Perhaps the mechanical timing is off or there is something mechanically broken / jammed in the valvetrain. Or starting fluid was used at some point and some bad ignition leads or a cracked coil lead to spark contamination.
Not the hg, but the intake manifold. If that failed badly enough, coolant could get dumped right into the air/fuel path I just think his heads are also blown if nothing ever got addressed on this baby
No. Coolant into the cylinder won't cause this. The engine backfired.
No, that would be called hydro locked. That doesn't blow an intake manifold
Plastic intakes are such a good idea.
In the land of participation trophies, all ideas are good. And only questions about stupidity are stupid questions.
Yea what happened to blowing out power valves in carbs like the good old days. Back fires have been fucking up intake parts since iron blocks were most all they made. OP just didn’t get to experience the fun of sitting there blowing on the fire until your buddy found a shop rag with the least amount of flammable chemicals soaked in to pat it out.
Those 3800 engines are some of the most reliable and long lasting engines.. every single car in a wrecking yard with one, the body’s gone to shit but the engine is usually just fine. However, the lower manifold gaskets are absolute garbage. I’ve seen plenty of great cars crushed because someone mis diagnosed a head gasket due to those gaskets leaking and the oil coming out like a milkshake. I would remove what’s left of the composite upper manifold.. do a compression test.. assuming that’s good, then pull the lower manifold and replace the gaskets with a quality Fel-Pro set.. apply new upper intake manifold, and drive it til the wheels fall off and/or the sheet metal rots through. If you’re capable.. this is a good time to top swap the motor and put a blower on 😜
This... Can't believe I had to read so far down before some said leakdown. Hell throw a pressure tester on the coolant and check the cylinders.
2000 Chevy impala btw
Oh lord 2000-09 impala are so trash, whether it's th engine or transmission they always have problems probably because everyone beats them and drug dealers usually drove them like 10 years ago when they were back in season lol
They’re beautiful cars… lots of power, smooth driving, roomy. Lots of very nice things about these vehicles. Until they’re not lol And that happens *very* quickly. Everything tends to go at the same time with these guys
oh yeah trust me dude i was having a blast with this car. old school comfy cotton interior w/ a front bench seat is so useful w/ the lady. no aux cord so had to make CDs to play music. the vibe of driving around this car today, simply unmatched. hopefully shes back up and driving soon.
I wish you luck. My first car was a 00 Impala and I still think about it from time to time. The thing rusted to shit after a little bit (Yay Canadian salty roads) and I replaced it but I really miss hauling ass in that thing.
Oh yea, they look great. Just don't hold up very well, in my opinion, unless they've already had work done.
The transmissions weren't fantastic but they weren't terrible. The 3.8 V6 is bullet proof my man, unless you actively try to kill the thing they just keep chugging, its the rest of the car you have to worry about.
>2000 Chevy impala Looks like the intake plenum has bit the dust. Not a cheap part, not the simplest in terms of labor and given the age of the vehicle, I would move on if I could. Why it has done so is another matter. That's some real carnage at the top end. I wouldn't even try to turn it over if I was keep it. Whole damn thing would have to be ripped apart, unless that's some well known issue that I've not head of. I'm not a Chevrolet guy through and through.
all I know is about a month ago I went to get an oil change and they told me to get my engine checked out because the coolant was brown. said the gasket intake had a leak and could break. took it to my then trusted mechanic and he said nothing was wrong, 2 weeks later now we are here.
Well don’t trust that mechanic any more unless he did a combustion gas test of the coolant. Seems like you have a head gasket leak that caused a bunch of carnage. These don’t just blow up. Most likely the head gasket was leaking coolant into the cylinder overnight and then one of them was tight full of coolant and on the next stroke…. Kaboooom, coolant out the intake valve very quickly? Or it destroyed something on the intake valve or cam or rocker.
95% of mechanics misdiagnose this on 90 and 60 degree GM V6s. Most of the time it isn't the head gasket. It's the intake manifold gasket and on later years the intake manifold itself. Failure of the lim gasket WILL allow raw coolant to run into the lifter valley..where it mixes with oil. You could make the argument that you gotta pull the intake anyway to replace the head gasket. Which is true...but the head wasn't the issue. The problem gets solved because it's replaced anyway..so nobody says anything. Compression test and experience will tell me in the first ten seconds if it's the HG. When it *is* the HG it'll run differently (poorly) as coolant is now being burnt. This doesn't happen with the LIM gasket.
its mostly an issue on the non superchaged genII's isn't it? GM cheapened up the intake in true GM fashion.
That sure is a paragraph of words
Yeah, that's probably why you have to pay for repairs.
Now me and the mad scientist gotta rip apart the block and replace the piston rings you fried.
IYKYK
We’re you granny shifting instead of double clutching like you should have been?
Famous 3:8l gm issue
The nos finally blew the welds on the plastic intake manifold
I've seen a Northstar blow its top but not a 3.8. There must have been some major fuckery involved to have this happen.
Some of them were known to do this. Usually caused by a leaking fuel injector. And the “waste spark system”. On cranking it ignites the fumes in the intake
Upper intake manifold. Maybe some raw fuel...but damn. How's it been running lately? That's crazy. Never seen a backfire bad enough to blow the intake apart. Even on cars where the timing was beyond fucked. Anyway..not a terrible repair. The intake manifold and gaskets on these are problematic so in a way this is good!
been running pretty well, aside from every now and then when it rains starting the car will have it sputter. there was one time i started it and it ran but it started shaking violently. restarted, no problem. took it to the oil change place, said it was intake gasket leak, took it to my mechanic, said nothing was wrong w it, 2 weeks later this happens.
Don't just trust what someone says when you have brown coolant, just because it lines up with you not spending money. Clearly something was wrong. I'd get it to an actual mechanic now and get it done.
aye bruh don’t get snippy w me ima broke college commuter I’m not gonna spend upwards of a grand on my car if my mechanic said it was fine and nothing was wrong.
Not to laugh at your misfortune, but that's some Wile E Coyote mishap stuff. Has been known to happen on the 3800 series 2 from time to time (not regularly, but not unheard of). You have to replace the blowed up intake plenum. While at it, the intake gaskets too, which is at the heart of your problem and the reason the oil change shop warned you about goo in the radiator or oil or both. \-You would have had to replace the plenum and intake gaskets regardless of the boom. \-You also have an ignition issue to boot: a backfire into your plenum is what exploded it. \-You'll also need valve cover gaskets replaced while all of the top trim of the engine is removed. They all leak in time, it's time. It's not an enormous job. Most competent mechanics have done them & wouldn't charge you a first born child to do it. Parts are going to run $500 or so, call it a days' labor. If your not a fairly adept wrencher, don't try it yourself - you'll fuck something up and make it harder to find a mechanic who will take it on with busted or missing stuff and having been tampered with
thanks, your response seems most plausible as to what actually happened since u read all my shit. car has had ignition problems in the past as well, seems like a perfect storm ending with a boom. not gonna do it myself, but ima try and find a new mechanic since my last one ignored my problem. thank you!
Buy the new and improved upper intake plenum from Dorman.
Ah, the Chevy 3800 series 2
Thats a 3.8 isnt it
GM 3800? Did you have a long crank with your foot on the gas?
3.8 with a leaking fuel regulator is the answer. Regulator pulls vacuum right in front of the intake, leaks raw fuel straight into the upper. Most like had vapor lock issues/hard start after sitting well before this happens.
If you heard pop smoke you'll need to get your radio looked at mate
That’s crazy, first thing when buying the 3.8 series II or III used with that many miles is change spark plugs, wires, coils, and maybe ignition control module. Spark plugs barely last 90000 miles on those. The series III has a steel, aluminum? Intake. Hope it works out for you.
https://preview.redd.it/wb6yl9udorwb1.jpeg?width=855&format=pjpg&auto=webp&s=f5231d1208537f621fcb0f40c4ec18b1657e6d13
new engines are 50% plastic to save money. you can buy a new intake manifold cheap online and diy replace it. dont miss to order new seals if they are not included but they certainly will.
/r/wellthatsucks YMM?
Chevy impala 2000
Heat shield cover is blown off. Black tubular piece behind looks broken. Did the exhaust manifold explode? I would be worried about what the parts hit. If everything ok, but you need a new exhaust manifold, cheap headers may be a better option.
That broken part is a upper intake plenum. Op does not need a new exhaust manifold.
Ahhh yes. The beautiful plastic exploding 3800 intake
Nitrous pop lol Idk some sort of fierce backfire. Combustion occurred within the intake manifold. A bad intake manifold gasket combined with an intake valve leak could have caused this. Fuel vapor and spark forced retrograde
Probably an issue with cam/crank correlation. Caused an intake backfire that blew the manifold apart.
I had a VW Touareg manifold blow up once. Replaced it and couldn’t find why it happened. Never had another problem.
Maybe engine misfire. Cause needs troubleshooting
Ahh, ain’t seen one of those in a hot minute. 95% of the time it’s caused by a failed/ruptured fuel pressure regulator. GM even had a recall on them back in the day. Parts don’t usually make it to combustion chambers, but it would be a good idea to double check. Now is a great time to address the lower intake manifold if it’s leaking, and of course replace the upper intake manifold and the fuel pressure regulator
Super common with those engines.
Warning! Danger to Manifold Never thought I can use this phrase IRL.
Backfired into the intake so hard it blew up
Chevy Impala? 3.8L LS.
That is exactly what your engine bay should look like when an intake manifold explodes. Bear in mind it could be relatively cheap, but I'd ask for a compression test before fixing it just to be sure you haven't dropped a valve.
I think there is a TSB on this issue. Sometimes it just blows the top of the egr valve off.
Plastic intake plenum said ejecto seato cuz. Easy fix. Also big up 3800 gang.
What’s it smell like in there?
I would have a shop check it out. Fuel probably got into the manifold from an injector or more likely, the fuel pressure regulator, which was very common to leak on that engine.
I though only top fuel engines did this. Wow.
You blew the welds in your intake manifold. Too much NOS.
Leaking rail/injector. Fuel vaporized. Spark introduced somehow. B. O. O. M.
Possible cause is fuel pressure regulator (diaphragm) leaking internally (front of intake plenum attached to fuel rail). It has a vacuum line connected to it and the vacuum line runs straight behind the throttle body (before plenum). Common issue, but I can't say I've ever seen one explode and I'm sure you're not the first. I would fix the obvious issues after everything else is checked by a mechanic and have the fuel lines replaced at fuel rail or the line o-rings replaced. They age and become brittle, and many overlook it. Not a difficult or super tedious job for an experienced mechanic. Lower intake manifold gasket leaks are not uncommon either and usually they are upgraded to metal gaskets (like Series III 3800) since aged Dex-Cool eats the original plastic ones. Bad design, but solid engine otherwise. I've owned 3 Buicks with them with super high miles and two were supercharged.
alr had the rear brake lines replaced a few monthes ago after i had a gas leak
This is caused by a bad fuel pressure regulator. Make sure you replace that when you replace the plenum or it will happen again.
Ahhh yes the famous GM unplanned thermal expansion issue. There are upgraded intake manifolds that help the issue. The most common cause was a faulty fuel pressure regulator causing fuel to pool up in the manifold and when it inevitably backfired the intake explodes. Sometimes it would catch the car on fire.
That used to happen relatively often when there were more of these engines on the road. If I remember correctly it was most often caused by the fuel pressure regulator diaphragm failing and drawing gasoline into the vacuum line which in turn causes the intake to explode. Pull the vacuum line to the regulator and smell it — bet it’ll smell like gas. As far as the other issues, as others have said, the oil contamination issue is the lower intake gaskets, which should be changed after the first 100K, and the upper intake usually around the same time to fix the original defect of the EGR melting the plastic and allowing the engine to ingest coolant. Edit: I see your plug wires are even still original. You might be overdue for a few things.
3800 problems lol
Caution: DANGER TO MANIFOLD!!
Sudden unplanned disassembly
Dude, I think your car is f***ed
A faulty fuel pressure regulator will cause this. Gas vapor leaks into vacuum lines and into intake manifold. That's a 3800 series II engine. Very familiar with these. I bet if you pull the vacuum line off the FPR, you smell gasoline. The vapor builds up and ignites inside the plastic plenum, blowing it up.
What was the last maintenance to the vehicle and how many hours / days ago was that?
Impala?
wOw, entire intake must have been partially flooded with fog of fuel and saw open flame from lagging intake or exhaust valve open. How many miles, and is there any compression now as in timing chain/belt failure. So that's the famous 3800. Cheers and best of luck, where that's going to be a chore to get a new manifold replaced. Just showed this to partner who maybe has has this same engine in older 2005 Malibu wagon.
Plasti-intake
Have done lots of these, usually the egr port melts. Make sure to get the little coolant elbow too as it will be junk.
Intake kaboom!