yamahajunky38 Posted May 3, 2005 Report Posted May 3, 2005 I'm gettinga Cool Head soon and I don't know what size domes to get. I've heard nothing but good things about the Noss cool head, so I'm going with one of those. Where I ride is at about 300-400ft above sea level. My only engine mods are Toomey T5's. Oh ya, I don't want to run race gas............ Quote
JArmShee Posted May 3, 2005 Report Posted May 3, 2005 you can run 21cc and still run pump gas at sea level 22cc also and even lower compression at sea level. 20cc will bring you to race gas. Quote
NEVER SATISFIED Posted May 3, 2005 Report Posted May 3, 2005 21cc is safe 20cc pump/race mixed 19cc pump/race mix - -- i have this one at 500 above sea and run straight race.. up to you Quote
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