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Message: [QUOTE="SpDyKen, post: 1014502, member: 60208"] Ok, Mm, I agree with all you've said EXCEPT the "32:1 will make it run richer, not leaner" part. Let's consider your theory. For this discussion we have to agree that we are NOT talking about ANY changes in jetting, right? So, let's say our XYZ 250cc bike has a 100 main jet. So it meters in approx. 100 "units" of fuel/oil pre-mix into the carbs. airstream at full throttle. This is more than 50 "units" of fuel/oil premix and less than 200 "units." So at W.O.T., when 100 "units" of fuel/oil mix are being fed into the air passing through the carb. and into the engine; let's discuss that "mixture" of fuel & oil. A 50:1 fuel to oil mixture is 50 units of fuel to 1 unit of oil. 50 gallons of gasoline mixed with 1 gal. of oil is an example of this. This is 1 divided by 50, which equals 0.0200, or 2.00% of this mix is oil. A 32:1 fuel to oil mix is 32 units of fuel to 1 unit of oil. 1 divided by 32 equals 0.03125, or 3.125% of this fuel/oil mix is oil. This means if we have a 1000cc container of each of these mix, 2% (20cc) of the 50:1 mix is oil; 3.125% (31.25cc) of the 32:1 mix is oil. Please note that this means we have 980cc of fuel in the 50:1 container and 968.75cc of fuel in the 32:1 container. SO, when your XYZ 250, with it's 100 main jet meters in it's 100 "units" of each of these different fuel mixtures into a given amount of air, which one contains more actual gasoline? Or in other words, which one is "more rich in fuel to air ratio?" I'll be curious to read your conclusion to this hypothetical scenario, Motometal. I do admit that a 32:1 fuel to oil mixture is "richer in it's oil to fuel ratio" when compared to to a 50:1 mixture. I think that this is what confuses many people. But we are referring to the resulting fuel to air mixture when we discuss whether a bike is "rich" or "lean," right? Let me know what you think. :ride: [/QUOTE]

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