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Mix ratio?
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[QUOTE="Mike R., post: 793516, member: 53682"] [b]Here is some info to help you understand.[/b] Here is some info that will help you understand. Fuel and Oil Mixture Ratios When we talk about the "fuel" in the air-fuel mixture for a two-stroke engine, we are really talking about a mixture of fuel and oil. If you richen the pre-mix ratio (20:1 as opposed to 30:1) there is more oil and less fuel in the same volume of liquid, which effectively leans the air-fuel ratio. And this fact gives the clever tuner one more tool to use when the correct jet is not available or when none of the standard jets are exactly right. You can richen the jetting by slightly reducing the pre-mix ratio (less oil). You can lean the jetting by increasing the pre-mix ratio (more oil). The best part is that changes in the pre-mix ratio affect the jetting over the entire throttle-opening range, but the changes in ratio must be small to prevent excess wear from lack of lubricating oil or fouled plugs from too much oil. [/QUOTE]
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Dirt Bike Discussions By Brand
Dirt Bike Brands - Other
Mix ratio?
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