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Dirt Bike Brands - Other
rev limiter or jetting problem on xr4? plz help
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[QUOTE="lipskid, post: 17895, member: 21801"] Hey xr owners! Sorry, I know this is a bit off topic,BUT... If you haven't already done so, pull the header pipe off and look just inside the inlet ends of the pipe.(I'm sure this info's been posted here before, i saw it on another site a while back) If the welds inside yours are anything like mine, you will be truly amazed at what you are looking at.Mine were so big and sloppy that they reduced the inside diameter by almost HALF! After grinding most of them down(almost 2 hrs with a dremel) the bike runs MUCH better on top. I added a muffler at the same time, so I can't say just how much it helped, but I would bet it helped AT LEAST as much as the new pipe. Anyway, sorry if I'm repeating old news, but WOW. I don't see how any of these bikes can run right with garbage like that in the pipe, no matter how much money is spent on hop ups. ------------------ '97 cr250 '00 xr400 '00 Buell x-1 [/QUOTE]
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Dirt Bike Discussions By Brand
Dirt Bike Brands - Other
rev limiter or jetting problem on xr4? plz help
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