RB26 Valve Clearence

[joe89]

Hi there

Any one try to set the valve clearences tighter than IN .42 EX .35? It should improve the preformance?

I have stock head with HKS 264 8.7 cams and forged engine.

[GTSBoy]

You don't dare close the clearances up more than a little bit, and that little bit translates into precious f**k all extra duration and lift.  There are cheaper ways to find the equivalent power than the extra shims you will need and the hours spent.

[Ben C34]

A burnt exhasut valve isn't worth the risk