frog Posted April 9, 2010 Report Posted April 9, 2010 I just got a ADA cool head givin' to me with 21cc domes.Do I have to rejet for this head.Also when do you have to run race fuel the compression is at 145psi.Also are these heads any good. Quote
SAVAGE420 Posted April 9, 2010 Report Posted April 9, 2010 I just got a ADA cool head givin' to me with 21cc domes.Do I have to rejet for this head.Also when do you have to run race fuel the compression is at 145psi.Also are these heads any good. No need to rejet, 145 PSI is fine with anything from 91-94 pump. Quote
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