Cam cap positioning and orientation?

[K04andmeth]

I am replacing my heads, and have the cams set to go back in.
I am trying to verify that I have the cam caps in the correct order and orientation, in case I removed them wrong, etc.

Thanks for any and all help!

[Bordom]

Caps literally push right in, in any orientation. Put some Gasket sealer on it and you're good to go.

[K04andmeth]

Caps literally push right in, in any orientation. Put some Gasket sealer on it and you're good to go.

gasket sealer on cam caps...?

[das4]

gasket sealer on cam caps...?

a small amount around the ribbed section of the cap. helps to ensure they don't leak. rubber/silicone breaks down over time

[Schtug]

Do they not have numbers and arrows to indicate their position in relation to the timing belt side of the engine?

[rnagy86]

What the f? Some people should not comment on forums such as this.

As for the OP, you can't install them wrong, there are numbers on them (starting from the cam chain tensioner)
and arrows pointing to the center of the heads (spark plugs).

[Bordom]

What the f? Some people should not comment on forums such as this.

As for the OP, you can't install them wrong, there are numbers on them (starting from the cam chain tensioner)
and arrows pointing to the center of the heads (spark plugs).

Works like a charm

Everything graciously mispelled by Android

[das4]

gasket sealer on cam caps...?

disregard, I reread. I thought you were referring to the silicone cam cap seals at back of the head. you're referring to the cam bearing caps. what that guy down below said

[rnagy86]

https://www.youtube.com/watch?v=9zA0X28cfEA

[Zba]

The cam caps need to be put back from where they came. I forget if Audi stamps an E on the intake cam caps and intake and an A on the exhaust can caps but make sure to put everything back where it came from.

[K04andmeth]

OK, next question.

How the hell do I keep the cams at TDC while tightening the caps on? I have tried twice, and they click over to not TDC before I can finish.
Crank lock pin in inserted in the block.

[Zba]

Remove the pin and rotate the crank backwards 60 degrees or so btdc. Get cams situated and lock bar attached, bring crank back to tdc

[zillarob]

^^ This

If you can see into the hole, there will be a slot when you get it in the right spot.
The notch on the left here is what you want to see through the hole.

[cjt671]

I'm going to be going through this process as well as I have a fucked up cam and will be replacing all cams and lifters. The Bentley doesn't say anything about rotating crank when reinstalling cams but I'm sure real life experience trumps that.

My question is if you guys think this process will work:

Crank stays locked at TDC
Install cams, chain and tensioner
Install bearing caps but don't torque
Install cam gears and cam lock bar
Install cam retaining bolts on outside of head
Torque bearing caps in proper sequence
Torque cam bolts
Remove cam lock bar

I trust myself doing that compared to rotating crank and trying to get my marks to line up. Would this procedure cause the cams to jump when I remove the bar?

[crazyquik22023]

The cam caps need to be put back from where they came. I forget if Audi stamps an E on the intake cam caps and intake and an A on the exhaust can caps but make sure to put everything back where it came from.

The exhaust caps are completely different from the intake caps. Exhaust caps are 2 bolts and intake caps are 4.

I'm going to be going through this process as well as I have a fucked up cam and will be replacing all cams and lifters. The Bentley doesn't say anything about rotating crank when reinstalling cams but I'm sure real life experience trumps that.

My question is if you guys think this process will work:

Crank stays locked at TDC
Install cams, chain and tensioner
Install bearing caps but don't torque
Install cam gears and cam lock bar
Install cam retaining bolts on outside of head
Torque bearing caps in proper sequence
Torque cam bolts
Remove cam lock bar

I trust myself doing that compared to rotating crank and trying to get my marks to line up. Would this procedure cause the cams to jump when I remove the bar?

That should work just fine. And you shouldn't need to remove the bar until you have the timing belt back on in which case the cams will not "jump" They should not "jump" anyway after removing the bar as long as you don't touch the cam gears with the bar removed.

[cjt671]

The exhaust caps are completely different from the intake caps. Exhaust caps are 2 bolts and intake caps are 4.



That should work just fine. And you shouldn't need to remove the bar until you have the timing belt back on in which case the cams will not "jump" They should not "jump" anyway after removing the bar as long as you don't touch the cam gears with the bar removed.

I was thinking it should work fine, but not sure why op is having an issue with cams moving out of time. So I should route the timing belt prior to installing/removing the lock bar?

[zillarob]

TDC means exactly that. You put the cams in and it pushes the wrong valve, you be having a bad couple days, or weeks, or months, or sometimes even years

Our motor has a tdc event every 120deg. Rotating backward 60deg gets the pistons as far away from the valves as possible while installing heads or cams.

[cjt671]

TDC means exactly that. You put the cams in and it pushes the wrong valve, you be having a bad couple days, or weeks, or months, or sometimes even years

Our motor has a tdc event every 120deg. Rotating backward 60deg gets the pistons as far away from the valves as possible while installing heads or cams.

So the crank should be rotated to BDC with cams installed at their TDC position?

[zillarob]

Where did get BDC out of what people have been trying to tell you in this thread? Read more beter

Pull tbelt
Rotate crank 60deg backward
Do werk
Right before you slip the tbelt back on, rotate crank forward 60deg and put lock pin in.

[cjt671]

Read before top dead center as bdc

So rotating back wards is to prevent valve-piston contact during install

[cjt671]

Also sorry to thread jack op

[MacDaddy]

Oh man this guy is gonna end up with one fucked engine after reading all this.

[cjt671]

Or this guy takes forum posts with a grain of salt and will likely follow the outlined Bentley procedure

[zillarob]

The bentley is fked in this area, but should get you through.
Def dont use it to put the chains on