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Dirt Bike Discussions By Brand
Dirt Bike Brands - Other
1981 Yz465 Performance (none)
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[QUOTE="JohnRichardson, post: 1368255, member: 111367"] [b]YZ465 not revving out[/b] A YZ was not designed to run with an after market slip on silencer but should still accept one with no trouble. Check the air filter isn't too oily and the best way of cleaning an expansion chamber or any 2stroke exhaust is to burn it out from the inside using a hot gas flame (it may ruin chrome on road bikes system) We used to use oxy/acetyline with compressed air line blowing in to keep the carbon deposit burning. You can get the whole pipe glowing red if you so desire but not advised. Re paint with a heat resistant spray can flat black or what have you. The problem is most certainly induction and either not enough air or too much fuel. When the motor was rebuilt were the crankshaft o'rings renewed as well as the seals? [/QUOTE]
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Dirt Bike Discussions By Brand
Dirt Bike Brands - Other
1981 Yz465 Performance (none)
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