Nelsonian Posted September 14, 2012 Share Posted September 14, 2012 So whats new with your build? Just looking for a progress update. Quote Link to comment Share on other sites More sharing options...
docaam Posted November 12, 2012 Share Posted November 12, 2012 I wanted to take an opnion as you have used same head/block combo. I bought similar but want to run it NA any idea what piston size I should go for to increase the compression to 10.5? as I heard stock compression as it is will be 8.5 which is very low for NA application. And would using stock RB25 pistons help the issue Quote Link to comment Share on other sites More sharing options...
ZT-R Posted November 12, 2012 Share Posted November 12, 2012 CP makes a custom 9:1 which is what I have. Just call them and tell them what you want. Make sure to CC your head first. Quote Link to comment Share on other sites More sharing options...
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