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Dirt Bike Brands - Other
compression question on 250's
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[QUOTE="mox69, post: 1266477, member: 76391"] Those ratios are "static compression." This would be the correct ratio if the valves never opened. The "dynamic compress" (or actual compression) will be lower, and will change based upon the cam profile (valve overlap, cam timing). It is also probably slightly different for every manufacturer. So to answer your question, no don't worry about it, the number is fairly useless as is. [/QUOTE]
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Dirt Bike Discussions By Brand
Dirt Bike Brands - Other
compression question on 250's
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