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Dirt Bike Brands - Other
engine mods for 2 strokes
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[QUOTE="76GMC1500, post: 1201620, member: 73139"] It can be, changing the position of the ports in the cylinder changes the effective compression ratio. It can also change the volumetric efficiency which has an effect on compression pressures. I also tend to glob cylinder and cylinder head work in with porting. Those can have huge effects on octane requirements. [/QUOTE]
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Dirt Bike Discussions By Brand
Dirt Bike Brands - Other
engine mods for 2 strokes
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