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Everything Dirt Bike
General Dirt Bike
What Mix ratio?
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<blockquote data-quote="Chokey" data-source="post: 50268" data-attributes="member: 649"><p>A 65 doesn't even start pulling until about 10,000 rpm. If the kid wants the bike to even move, he WILL be "rapping it out" as you put it. A 65 is "lugging" at a higher rpm than a 250T will even rev to.</p><p></p><p>I wouldn't run less than 32:1 in a 65 for a really slow rider. A fast kid on a 65 would be getting 20:1 if it were me.</p><p></p><p>Your mix ratio has absolutely NOTHING to do with spooge and plug fouling. If you have a spooge problem or foul plugs, barring any mechanical issues such as bad reeds, your jetting is wrong for the conditions. I can go mix up a batch of 18:1 for my KX250, and with five minutes of brass changes I will have a dry tail pipe and a perfect plug color.</p></blockquote><p></p>
[QUOTE="Chokey, post: 50268, member: 649"] A 65 doesn't even start pulling until about 10,000 rpm. If the kid wants the bike to even move, he WILL be "rapping it out" as you put it. A 65 is "lugging" at a higher rpm than a 250T will even rev to. I wouldn't run less than 32:1 in a 65 for a really slow rider. A fast kid on a 65 would be getting 20:1 if it were me. Your mix ratio has absolutely NOTHING to do with spooge and plug fouling. If you have a spooge problem or foul plugs, barring any mechanical issues such as bad reeds, your jetting is wrong for the conditions. I can go mix up a batch of 18:1 for my KX250, and with five minutes of brass changes I will have a dry tail pipe and a perfect plug color. [/QUOTE]
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What Mix ratio?
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