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Dirt Bike Mods & Maintenance
YZ105 jetting help
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[QUOTE="deadhead, post: 947712, member: 22441"] Thanks for the great reply. My intention was only to get a starting point for the first time out with the big bore installed. Still no suggestions on that. Let me ask a little different question... On his stock-bore 85 we're running a #142 main jet and I've got the stock needle installed with the clip in the top notch. The book says that's one full step leaner. The bike really runs well as is, but I can't go any leaner with the #142 main if the temp and humidity creeps up any more. I don't mind playing with the needle clip, but I'd rather not make jetting changes if I don't have to. If I were to run a #140 main with the stock needle and the clip in the third groove (One step richer) can I expect it to perform roughly the same as the 142 with the clip at the top? Thanks, deadhead [/QUOTE]
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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
YZ105 jetting help
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