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Honda MX & Off-Road Dirt Bikes
'99 XR400 8000+ft. jetting ?
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[QUOTE="Lorin, post: 131157, member: 16153"] I just came back from Colorado last week, and most of us ended up running a 160 main (2 yzf 250's, my wr500). We normally ride at around 800 feet sea level in Oklahoma and all run 175's for mains. I was told to use 1% leaner for every 1000 ft difference from where you live. That tended to apply pretty close for our riding. The thing about Colorado is that there is so much elevation change, your jetting will be good sometimes and mediocre at others. With that in mind, I stayed a little rich and ran a 160 instead of a 158. None of found the need to touch the air screw or the pilot on our bikes. No fouled plugs between 8 bikes for 6 full days of riding (100 miles per day, from 6000 feet to 14000 feet). [/QUOTE]
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Dirt Bike Discussions By Brand
Honda MX & Off-Road Dirt Bikes
'99 XR400 8000+ft. jetting ?
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