View Full Version : 20cc cool head dome
07preddy
08-01-2007, 03:44 PM
will a pro design cool head with a 20cc dome hurt my stock bottom end?
04blasterkid
08-01-2007, 03:47 PM
i wouldnt think so, but you have to run race gas with anything under 21cc... im almost pos.
Scott-300ex
08-04-2007, 03:52 PM
Do a compression test before you run race gas. 180psi and up then run it.
Your bottom end will be fine.
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