Ok, here's the deal, just rebuilt my RD but did not put new hydro lifters in, I got enough chatter to be worried about it, so I picked up a new set of lifters of germanautoparts.com.
I did not soak them in oil before I installed them, but I did make sure to follow the bently and hold the engine at 2k RPM for 10 minutes. The sound started to go away, but is now slowly coming back.
Note: I do not know my oil pressure, but I do know my oil pump is brand new. I'm still running Rotella T 15W-40 because of break-in period.
I was told by a seasoned VW guy that this noise may be caused by my timing belt being off by one tooth? Also, someone mentioned the noise may be ignition timing, I have mine advanced more than I thought would be ideal (leads me to believe it may be the timing belt being off...)
I also know I do have a cracked stock manifold, and have read that the exhaust leak may sound like that, but I have narrowed the sound down to the head itself. I do not have an oil control tray for the cam, but one is on it's way, so that will be going in soon too.
Car still runs and pulls GREAT, other than the noise that's the only real issue
Any ideas? I'm out of them. Should I order some lifters and soak them this time?? Any links to a specific procedure for installing hydro lifters, I couldn't find one on the 'tex, so I just followed the bentley.
Modified by rte7x9 at 11:49 AM 8-27-2008