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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
Squish bands
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[QUOTE="jaguar, post: 1432569, member: 19340"] [B]My final conclusion:[/B] Squish bands are detonation preventors for high compression. For engines that rev higher than the 8300 rpm of mine they may also significantly boost top rpm power. Until I test at those rpm I can't do anything but speculate with what I know about how they act on the fuel/air mixture. On these small engines it's really hard to design a head with a squish band that allows less than 160psi. I had to increase the dome size and add an extra gasket (.2mm thick) in order to get the psi down to 160. I designed a head for a 125 with squish band and there was 25% more inner dome diameter which means more volume so that the compression doesn't have to be so high. [/QUOTE]
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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
Squish bands
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