I have a set of rrc .25 os piston to us on my k20a build and am planing on running stage 2 cams either kelford,drag cartel or blueprint. Does anybody know if the valve relief on these pistons are deep enough to run these cams efficiently or would i be better off to sell these and go with a aftermarket piston with deeper relief.Head and block will be resurfaced but to a minimum and will be using a oem headgasket.Also may decide to use flat face valves for more comp but undecided on this.
RRC pistons valve relief
- Thread starter mxmad
- Start date
pulpmelon_r
Advanced Member
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- 232
You will have to limit VTC advance in software in most cases.
The camshaft vendor should be able to tell you how much clearance you have on an OEM piston with their profile. If they cant, buy from someone who can!
The camshaft vendor should be able to tell you how much clearance you have on an OEM piston with their profile. If they cant, buy from someone who can!