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Dirt Bike Brands - Other
XR4 backfirin'
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[QUOTE="snaggleXR4, post: 186710, member: 24395"] Hey, I'm in Florida, sea level, and I have an aftermarket airfilter, snorkel removed and XR's Only Competition exhaust. My jetting, recommended by XR's Only for my specific setup is 160 main/60 pilot. Assuming your bike is all stock, with the snorkel and stock exhaust with the baffle still installed, you will be on the rich side. The '96's and '97's came with 162/62 jets stock, the '98+ bikes have 142/52 jets stock. The '98+ bikes are jetted better with the stock setup, but will be very lean if you make any airbox/exhaust mods. The '96 and 97 bikes were way too rich stock, better with snorkel removed and baffle removed, but still very rich. If your bike is still stock, and you plan to keep it that way, aim closer to the 98+ jetting of 142/52. My bike will still try to stall at idle if I blip the throttle REALLY fast, but under no circumstances have I experienced it even in really slow riding conditions. I think leaning the pilot does help the off idle stumble, but does not totally cure it. I bet one step leaner than the #60 would do the trick, but you might need to go a couple steps, just remember, richer is better. In addition, I would try to adjust the pilot screw to see if you could lean out the mixture a tad. It probably won't be enough by itself, but it's worth a try. Good luck, keep me/us informed of your progress. Keep on thumpin'! [/QUOTE]
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Dirt Bike Discussions By Brand
Dirt Bike Brands - Other
XR4 backfirin'
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