I got a 2003 CR250R and had some questions on milling the head. I don't expect to do it myself...i wish. but i was wondering how much i could take off and still use 93 octane fuel? i don't really feel like spending the money for race gas. also, how much will that raise my compression, and does any1 know how much higher my compression can go before i have to increase the octane rating? stock it is 8.5:1.
i couldn't find this in any of the threads, so i there is one, if ya could post a link that would be great.
thanx
i couldn't find this in any of the threads, so i there is one, if ya could post a link that would be great.
thanx