Dewey wrote:2 or 4 stroke doesnt matter compression ratio does. A low comp. engine will make MORE power on LOW octane fuel that it will on high octane. Somebody should do a test. Take an unmodified spree and make five timed runs from a standing start for like 100 yards. then drain the tank and do 5 more with high octane gas and see if there's a difference. Then we'll know who's right. By the way what is the comp. ratio of a spree engine?
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