Originally Posted by ashtonsser 
if you dont have the upper guide then take your valve cover off and see if its hitting the valve cover. You would have to have some serious stretch to hit the valve cover but i have seen it but with the upgraded tensioner i highly doubt it. The new tensioner is pretty strong and is plenty long enough that even with stretch should have no issues tensioning your chain properly.
Again id have to hear it in person to be sure. The sound is too distorted.
I think my car is a special case for whatever reason. As I've posted in the past(http://www.sr20-forum.com/602779-post18.html), to get my car to 15* base timing I have to turn the distributor almost all the way advanced and I've confirmed countless times that my cam timing is spot on. I do have scoring on the underside of the VC.
Maybe I should re-install the chain guide?
Either the chain is stretched or the guides are somehow messed up. Whatever is going on isn't normal. I think the whole timing chain assembly needs repair.
-G
Last edited by gomba
on 2011-10-26
at 02-48-30.
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