So I wanna mill my head down on my 650sx. I RIDE at 5000' elevation, so my psi in each cylinder is about 125. Stock is like 150, high is like 170+ (at sea level, I rebuilt the head 3 months ago, so don't say something is wrong with it, it's the high elevation). How much would you recommend milling it down? I've head .010" is ~10psi, can I keep dropping it, or is the elevation too high to get high compression? If I mill it for any higher compression I'll buy another head so if I ever go to low elevation I can swap them to keep the psi at a safe level.
650/X-2 HELP! Head Compression
- Thread starter Snivilous
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