If you bore your engine a couple times can you still use 87 octane(sea-doo)?Even if your compression rises?
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Bored engine what octane?
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Joe,
185 lbs pumping compression is quite high, especially on any large bore motor. It would take well over 14 to 1 compression ratio to reach that high of a pumping compression number on a large bore motor, and that would be destructive to a 951, for instance.
An example would be a smaller motor, such as a 550, could live with this high a number, but a 951 would self destruct in a very short period of time if much over 160 psi, and then it would need .060 or more squish clearances.Bill O'Neal WCM
<a href="http://www.watercraftmagic.com" target="_blank">www.watercraftmagic.com</a>
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