Originally Posted by modaddict
you will have to change the total amount of avcs, most likely. Or a valve has a good chance of tapping a piston.
(assuming you run avcs)
06 WRX does have avcs and I bought the avcs cams from cosworth. And pointers on getting the avcs dialed in? is it possible to just zero out the avcs table during break in?
Originally Posted by greysave
The valves hit the pistons because wrong spec pistons. I don't think there were any valve reliefs cut in these pistons.
My Wiseco 100mm (0.5mm oversized) pistons are dished as well as have valve reliefs in them. I would agree that it is odd that yours do not.