supersider Posted September 4, 2009 Report Share Posted September 4, 2009 just wondering if 175psi on gasoline is to much compression? plus 4 time shearer insb. 35pwk v-force2 4mil big bore blaster pistons drag port cool head running cut 17cc domes! Quote Link to comment Share on other sites More sharing options...
03bansheeLE Posted September 4, 2009 Report Share Posted September 4, 2009 What kind of octane are you using? Im pretty sure 110 octane is safe for that much compression but if your running pump gas like 94 octane then I think around 155 psi with +4 timing is about the limit. I use 21cc cut domes with my 4 mil for 155 psi. Quote Link to comment Share on other sites More sharing options...
ziegman Posted September 4, 2009 Report Share Posted September 4, 2009 What kind of octane are you using? Im pretty sure 110 octane is safe for that much compression but if your running pump gas like 94 octane then I think around 155 psi with +4 timing is about the limit. I use 21cc cut domes with my 4 mil for 155 psi. I run 100 octane at 181 psi Quote Link to comment Share on other sites More sharing options...
supersider Posted September 4, 2009 Author Report Share Posted September 4, 2009 SUNOCO 110 Quote Link to comment Share on other sites More sharing options...
SAVAGE420 Posted September 4, 2009 Report Share Posted September 4, 2009 SUNOCO 110 More then enough. Quote Link to comment Share on other sites More sharing options...
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