mattb348 Posted March 22, 2006 Report Share Posted March 22, 2006 Hey again guys. I bought noss machine heads wth 18cc domes. I'm gonna run 104 octane fuel if need be (I'm about 1000 feet above sea level). My questions is this: I already have PC pipes & silencers, along with K&N clamp on filters (no airbox). I am currently running 30 pilots & 330 mains, and it is working well so far. Do I need to rejet when I put on my new noss machine head & 18cc domes? becuase right now its running the stock head, stock compression (about 120 PSI). Will I have to rejet with the added compression? And if so, what is a good place to start? Thanks again! Quote Link to comment Share on other sites More sharing options...
icecold_shee Posted March 22, 2006 Report Share Posted March 22, 2006 no, just higher octane Quote Link to comment Share on other sites More sharing options...
ellison445 Posted March 22, 2006 Report Share Posted March 22, 2006 no! Quote Link to comment Share on other sites More sharing options...
mattb348 Posted March 22, 2006 Author Report Share Posted March 22, 2006 Thanks guys! Quote Link to comment Share on other sites More sharing options...
dajogejr Posted March 22, 2006 Report Share Posted March 22, 2006 I agree with the boys above. However...before you waste money on race gas...get the head on and test the compression again. If you're around 150 or less...premium pump gas will work just fine....according to Noss's chart, you should be right around 178 or so. You'll definately need race gas if you're close to that... Have fun... Quote Link to comment Share on other sites More sharing options...
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