Quote:
Originally Posted by Yellow4g63
Maybe you can help me with this question. What valve springs do you run with the P11 head for turbo? 115? or 138? I remember a few years ago Mazworxs warned about using the 138's because they were showing abnormal wear on the cams? I just don't want to spit a shim out if I bounce off the limiter @9k with N1 cams.
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I was actually having this same exact dilemma, called Supertech & spoke to them about the use for the car. basically if it's a road race / drift car they recommended the 115 spring kit for the N1 cams. he said the 138 is for drag cars only.