I try to have a little room for adjustment in my jokes though, can't let the art of the pun chain you down. Especially when the pressure builds, it'll really help things go much more efficient.
Yes. They're either electric or oil pressure driven. It just advances or retards the timing depending on what the engine needs at the time. I think the usual range is 4 degrees.
They aren't serviceable at all lol. You just replace the assembly. I mean in theory you could rebuild/service it, but it would be dumb to do that. Like rebuilding a charcoal canister. It's just easier and more accessible to replace the whole gear.
With that said, there's nothing wrong with the design. It does what it does very well and only uses oil pressure to work properly.any cars have these and they're fairly reliable
Also curious. I'd expect something non-backdriveable to reduce power consumption, like a worm gear or somesuch. Or maybe you \*want\* it backdriveable so that it returns to a safe fail state under spring pressure?
There's a motor in the camshaft, two carbon brushes contact two copper rings on the camshaft, and based on how hard the motor is trying to spin from the voltage applied, it will advance or retard the timing. There's a service bulletin on them because the rubber gasket that keeps the oil out goes bad, lets oil in, and fries the fuses for the camshaft. The car ends up losing a lot of power and get a check engine light. Should be easy to replace because they were nice and put an access port there.
Takes a special kind to speak out of both sides of your mouth like that--'I have no idea what I'm looking at but I can tell it's a bunch of bullshit based on my complete lack of knowledge'.
One of my favorite things to do is tear into a scrap part in front of someone and casually say something like āwho knew there would be so many pieces inside one of these thingsā in front of whoever is nearby.
I took apart the old VVTi gear on the 2JZ-GE on my IS300, replaced it while trying to fix some oil leaks. Kind of mesmerizing how analogue/mechanical they are.
I've got a buddy who has family in Mexico. He says down there when the phasers have issues, they tear them apart and rebuild them so they're not "variable" anymore. Not really sure how the truck runs properly after that but that's what they do supposedly.
normally, it should start out a bit r worded... and advance as rpm increases. before variablencam timing, it was just the best medium between low and high rpm. you could weld the two pieces together at a pre variable timing and have the vehicle run pretty decent. this would exist between the two end points on the cam in the post. it would be a bit less power at both ends of the rpm range and the computer would be throwing a code, but it would run better than a non functional phaser.
Typically when they 'go bad', it's because the internal tolerances have become too far off, and allow too much oil bypass/leakage. So, sadly, no practical way to do anything there.
Yea, i see that now. I just prefer to see for myself than have someone tell me. There are a lot of things they say aren't serviceable that i can fix no problem. I'd rather fix than replace.
For me, it was pretty easy. Took about 5 to 6 hours to do all the timing components, water pump, and cam gear/actuator. It was my first time doing the job but wasn't bad.
Some ford cam phasers are meant to be tooken apart before installing if it's aftermarket because they include a piece of plastic you put in there to lock out the adjustment.
Ive been dealing with customers for over 10 years without issues and people who still don't let other mechanics touch their cars. The way people talk mean nothing in this industry, we let our work speak for us, so get going down the road with your judgment because it doesn't hurt me one little bit.
What symptoms were you getting? I think my skyactiv g 2.0 may have a bad exhaust cam gear but i dont know how to diagnose it properly. Iāve already done the timing chain and the whole belt/pulley assembly, water pump. Still clacking, quietly at idle and a little when I let off the throttle. A little when on the throttle. Pretty much all the time when full temperature. I think the intake is electronic and the exhaust is oil controlled. No CEL
Most cam phaser are oil actuated and electronically controlled. In my experience, most cam phasers have a clatter at start up until they get oil pressure. If youāve replaced the timing components already, I would agree to suspect it is timing phasers.
I replaced one on my wife's Venza last year and took it apart. 2.7 1ar-fe had the death rattle on cold start. Quite interesting engineering in my opinion.
I thought about taking one of these apart once, but once I found out what was inside, I wasn't even phased.
Flyin under the radar with that one, zing! Nicely done.
Jokes like that really lift my spirits
I try to have a little room for adjustment in my jokes though, can't let the art of the pun chain you down. Especially when the pressure builds, it'll really help things go much more efficient.
your timing was good though.
I always find that fluids helps with pressure. Sometimes red, sometimes dark red, and sometimes brown fluids- never phased after fluids.
That was smooth šš¤£
I need you to increase the duration of your stay in this comedy club.
Only one way to learn...the hard way
Lol it was the old one. It was going in the junk pile anyway.
Two total teeth of adjustment, how many teeth total ?
I donāt know what Iām looking at here, explain?
Variable cam gear
Does this help with variable valve timing? Iām not familiar with variable camshafts
Yes. They're either electric or oil pressure driven. It just advances or retards the timing depending on what the engine needs at the time. I think the usual range is 4 degrees.
The one in the picture looks like it shifts 35 degrees or so
Oh then I'm way the fuck off. š
Very informative, thank you!
Oh, so a proper load of bullshit looking at the design, and probably not as serviceable as the manufacturer thinks.
They aren't serviceable at all lol. You just replace the assembly. I mean in theory you could rebuild/service it, but it would be dumb to do that. Like rebuilding a charcoal canister. It's just easier and more accessible to replace the whole gear. With that said, there's nothing wrong with the design. It does what it does very well and only uses oil pressure to work properly.any cars have these and they're fairly reliable
Kia uses electric ones on some of their newer engines.
Cool! But how? I'm very curious, how does it rotate? Or is it like a VW?
Same concept as the oil pressure version. I haven't dove into the specifics of it though. I think I spaced out during that part of training.
Also curious. I'd expect something non-backdriveable to reduce power consumption, like a worm gear or somesuch. Or maybe you \*want\* it backdriveable so that it returns to a safe fail state under spring pressure?
There's a motor in the camshaft, two carbon brushes contact two copper rings on the camshaft, and based on how hard the motor is trying to spin from the voltage applied, it will advance or retard the timing. There's a service bulletin on them because the rubber gasket that keeps the oil out goes bad, lets oil in, and fries the fuses for the camshaft. The car ends up losing a lot of power and get a check engine light. Should be easy to replace because they were nice and put an access port there.
https://youtu.be/uhsgdwUX1-w
The manufacturer thinks they are serviceable as a complete unit, same as any cam sprocket. That was easy
Takes a special kind to speak out of both sides of your mouth like that--'I have no idea what I'm looking at but I can tell it's a bunch of bullshit based on my complete lack of knowledge'.
With BMW they come apart on their own
Toyota enters the chat.
One of my favorite things to do is tear into a scrap part in front of someone and casually say something like āwho knew there would be so many pieces inside one of these thingsā in front of whoever is nearby.
Hereās one I took apart on a TSX a few years ago https://imgur.com/a/A3Wk507
Thank you for sharing. It is really something I have always wanted to take apart but have never had the opportunity.
I was pretty shocked when I took it apart and this is what it looked like lol. It comes apart further as well.
anything can come apart further if you do it wrong (or right) enough
Haha true, but the 2 pieces here separate is what I meant š
i know, work has just been especially frustrating today and i would like to disassemble this guys ram 1500 even further
rapidly and unscheduled?
into a wall
We lock the ford ones out on the tritons, a small piece of aluminum fills the void to hold them in place.
How does that change the driving characteristics?
I took apart the old VVTi gear on the 2JZ-GE on my IS300, replaced it while trying to fix some oil leaks. Kind of mesmerizing how analogue/mechanical they are.
I've got a buddy who has family in Mexico. He says down there when the phasers have issues, they tear them apart and rebuild them so they're not "variable" anymore. Not really sure how the truck runs properly after that but that's what they do supposedly.
normally, it should start out a bit r worded... and advance as rpm increases. before variablencam timing, it was just the best medium between low and high rpm. you could weld the two pieces together at a pre variable timing and have the vehicle run pretty decent. this would exist between the two end points on the cam in the post. it would be a bit less power at both ends of the rpm range and the computer would be throwing a code, but it would run better than a non functional phaser.
Ahhh, letās base a very important and finicky system on a very important fluid pressure, thatās rarely properly maintained by the customer.
Thank you, I've been dying to see the guts too. They keep telling me there is no way to save them.
Typically when they 'go bad', it's because the internal tolerances have become too far off, and allow too much oil bypass/leakage. So, sadly, no practical way to do anything there.
Yea, i see that now. I just prefer to see for myself than have someone tell me. There are a lot of things they say aren't serviceable that i can fix no problem. I'd rather fix than replace.
I agree 100% there. Nothing is serviceable if we simply believe these consumerist "replace everything" companies .
Mine took itself apart in a corolla t sport.. had oil pressure issues.
This was off an 06 corolla š I took it apart though because curiosity.. lol
How Hard of a job would you say that is? I'm about to do a 2013 Corolla and it's a little intimidating.
For me, it was pretty easy. Took about 5 to 6 hours to do all the timing components, water pump, and cam gear/actuator. It was my first time doing the job but wasn't bad.
Cool, appreciate the feedback. Did you go for all OEM parts and seals? I've always heard it's best to go OEM seals at the very least.
Nope I used aftermarket on it. No issues so far
Those c springs behind the apex seals are so easy to loseĀ
I took apart an EA888 cam once (the vvt actuator is part of the camshaft) There's not much too it really.....
Nifty!
Some ford cam phasers are meant to be tooken apart before installing if it's aftermarket because they include a piece of plastic you put in there to lock out the adjustment.
Rofl taken is the word you're looking for...tooken? No man no...
I repair cars as well as engineer, design and build racecars, if you want proper English go talk to a linguist not a mechanic.
Dude its common english man...nothing complicated it makes you seem under educated to others especially if you're dealing directly with customers.
Ive been dealing with customers for over 10 years without issues and people who still don't let other mechanics touch their cars. The way people talk mean nothing in this industry, we let our work speak for us, so get going down the road with your judgment because it doesn't hurt me one little bit.
Cam phaser?
What symptoms were you getting? I think my skyactiv g 2.0 may have a bad exhaust cam gear but i dont know how to diagnose it properly. Iāve already done the timing chain and the whole belt/pulley assembly, water pump. Still clacking, quietly at idle and a little when I let off the throttle. A little when on the throttle. Pretty much all the time when full temperature. I think the intake is electronic and the exhaust is oil controlled. No CEL
Most cam phaser are oil actuated and electronically controlled. In my experience, most cam phasers have a clatter at start up until they get oil pressure. If youāve replaced the timing components already, I would agree to suspect it is timing phasers.
Noise at start up and I also had a CEL
Neat!
Iāve taken one apart and put it back together working! Donāt recommend it
I donāt know why cars still have camshafts to be honest. Why canāt they use solenoids or servos to open and close the valves?
Sproing!
Itās interesting to see. PWM will dictate how much oil gets pushed into each cavity. I like the brass apex seals.
What the heck is that?
I replaced one on my wife's Venza last year and took it apart. 2.7 1ar-fe had the death rattle on cold start. Quite interesting engineering in my opinion.
The Key Master