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Dirt Bike Brands - Other
Does big bore need richer jets
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[QUOTE="Matt90GT, post: 1361570, member: 30871"] it is called volumetric efficiency. True with addition of pipe, porting etc. Many times you end up a bit leaner due to the more efficient engine. But start at stock and work up slowly doing a few plug chops. Easier to run a bit rich than lean and seize the motor. Also if the previous owner used a different oil mixture ratio, it may be jetted for that. LIke a 24:1 mixture or 20:1 [/QUOTE]
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Dirt Bike Discussions By Brand
Dirt Bike Brands - Other
Does big bore need richer jets
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