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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
Float Height vs. Jetting - What is really happening?
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[QUOTE="JayC, post: 1191866, member: 74319"] Physics? Look up "Bernoulli principle". Faster air has less pressure, so air moving through a carb throat allows the ambient air pressure in the bowl to push the gas through the carb jets. With fuel closer to the top of a jet, the higher fuel level makes it easier for the ambient air pressure to push the fuel the rest of the way through the jet into the throat air stream, so more gas will pass through a given jet for the same throat velocity, or same throat drop in pressure. As such, a higher float height makes a motor run richer. JayC [/QUOTE]
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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
Float Height vs. Jetting - What is really happening?
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