[Tom Goldman]

Bill ,that why I'm asking.
I want to believe tha the motor wants the higher c/r , for the same reasons you pointed out.
I began questioning the higher c/r after talking with some sprint car guys I know who told me they tried higher c/r's than 15 to 1 and saw no more power.
I realise there is still a benefit to the 17 to 1 ratio when dealing with poor atmospheric conditions and higher altitudes, but since the engine needs pistons anyway ,I thought it would be worth questioning.