valve train noise after 2.0 stroker

[Gabriel_]

I'll jump into it, I did a 2.0 stroker on my b5 "atw" when I did the head I put in,
Ferrea valves
Super tech valve train
All new cam followers
About 75% of my valve guides
New cam chain tensioner

So pretty much only thing that wasn't replaced was the cam and cam caps

Since the build I've put maybe 10k miles on the car, I've always had valve train noise since day one.

About 3k mIles in I pulled the cam followers out checked them some of them didn't have very much hydrolic pressure, so I replaced them all again.

Noise was still there not as bad but over time it got a little worse, so I went in again and replaced the tensioner, again didn't fix it.

I'm about ready to take the head off and see if the machine shop screwed up on somthing.

Is there a certain way to break in the cam followers? I've read to let then sit in a bucket of oil for a few days before install? Is there another way to break them in?
Maybe a bad cam or to much clearance between the cap and cam?

I'm getting ready to upgrade the turbo and would like to fix it while I'm in there.

Here's the link to the build so you can see exsacly what was done
http://www.audizine.com/forum/showth...42-First-Build

And video



http://vid1228.photobucket.com/album...psj2vnpvz3.mp4

[Dan[FN]6262]

Sounds like CCT might be going bad, letting the cam chain slap around a little bit. Or you have low oil pressure causing the CCT and lifters to be noisy. Start with the easiest solution to the problem then work toward the more expensive fixes.

1. Check oil pressure with a real gauge, down by the oil filter. Take out the factory oil pressure switch and thread the gauge in there.

2. Was oil pressure in spec?
2a. No. you're gonna be pulling the pan and either cleaning a pick up tube, or replacing an oil pump.
2b. Yes. you're going to want to replace the CCT or VVT, (I'd also throw a new chain in too) whichever your vehicle utilizes.

3. Fixed...?
3a. Yes. Enjoy it!
3b. No. Try a heavier weight oil. Personally I run 10w-30, minimum. If I'm going to be beating on it a lot I'll change it out to 15w-40.

[chris164935]

Bentley manual mentions that if there is lifter noise after the motor has warmed up and all the lifters are good (spec is less than .008", so if a feeler gauge of .008" can be fitted between the lifter and camshaft lobe pointed up) that it could be the oil retaining valve. It is located in the oil filter housing.

It would be part #3 in the diagram. I believe it is this part: https://www.ecstuning.com/Search/077103175B/ES282197/ But, you might want to double check what yours looks like first.

[redline380]

Bentley manual mentions that if there is lifter noise after the motor has warmed up and all the lifters are good (spec is less than .008", so if a feeler gauge of .008" can be fitted between the lifter and camshaft lobe pointed up) that it could be the oil retaining valve. It is located in the oil filter housing.

It would be part #3 in the diagram. I believe it is this part: https://www.ecstuning.com/Search/077103175B/ES282197/ But, you might want to double check what yours looks like first.

Sure but wouldnt it just give noise on startup? After a few seconds, he should be getting plenty of pressure up there

[chris164935]

Bentley manual mentions that some noise from the lifters at startup when the motor is cold is normal. After warm up, if they noise persists and the lifters have been checked for proper clearance and come out good, then the oil retaining valve is another possible thing to check for the source of the issue. I'm not too familiar with diagnosing this type of issue, it was just something I had read in my manual when I was looking for some other information; figured it couldn't hurt to mention it. I would assume that the valve holds the oil up in the head. I would think the head is getting oil but it's not holding enough oil to keep the lifters filled. Not 100% sure how it works though (the oiling/filling process of the lifters). We can assume he is getting oil in the head since he drove the car for 10k miles with the noise issue. I'm pretty sure his cams, valvetrain, etc. would have been toast if the oil pressure was good enough after that much driving.