KE-JG Posted October 26, 2006 Report Posted October 26, 2006 Anyone know what the compression ratio is for a standard 5K? I measured it by filling the combustion chamber with oil, etc. to be about 8.5, but that seems a bit low..... I'm now running on LPG, so could handle 10.5. Anyone know how much to take off the head to get 10.5??? Quote
kangaroosa Posted October 26, 2006 Report Posted October 26, 2006 My 5K was running 9.5:1. Its in the head shop now getting bumped up to 10:1 (and new valve springs). I heard the bloke say he would shave the head 30thou to bump it up half a ratio. Quote
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