fabricated Posted November 29, 2005 Report Posted November 29, 2005 What is the maximum safe amount of compression that can be ran on pump gas at glamis? I have .035 shaved off the head, a good dune port, and a 4 degree timing key. The reason I ask is that I blew my bike up at glamis and I was running pump gas but the plugs checked rich at all times and I definitely did not get any sand in the motor. Quote
BigRed350x Posted November 29, 2005 Report Posted November 29, 2005 (edited) I think the rule is that anything above 150-155 you need to be running race gas. Anything below that and you should be fine with some 93 octane pump gas. I ride at 8000ft plus. There are places out here that sell shit as low as 83 octane and I have seen guys run that stuff in their shee's at that altitude with no problems. I would never do that, but I've seen it done before. With my stock head on at 7200ft I get right around 120psi compression. A cool head with some 18 or 17cc domes will get you up there to where you need to run some 50/50 race gas at this altitude. Edited November 29, 2005 by BigRed350x Quote
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.