mcman56 Posted February 19, 2013 Report Share Posted February 19, 2013 I have mixed and matched parts plus did a little machining on cylinder and head. I'm now trying to decide if I have too much compression. What would be an expected or highest expected compression test number for a 250 Rev3? My old Sherco was around 155 psi. Quote Link to comment Share on other sites More sharing options...
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