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6th Gear Loss Of Power


zzzz

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Went riding w/ a friend yesterday. My bike is stock 'cept for no snorkel and jetted up 2 sizes. He has t5's plus straight KN air cleaners. He said he was jetted at 280. We both have brand new rebuilds, .030 over. Also the same gearing, 12/41. Anyways, his bike would beat me thru gears 1-5, but mine would take off in 6th and leave him behind. Once he hit 6th his bike would bog. I thought if it was a jetting problem then all the gears would act the same. Any ideas?

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not necessarily, the higher the gear your in, the harder your motor has to work to pull it, which will require more fuel and possibly result in a lean condition. Just because your mixture is right in 3rd gear doesn't mean it won't be lean in 6th. That's why when we tell people to run a WOT plug check, we suggest 6th gear, this will eliminate the chances of having a lean condition in a high gear.

 

Chances are, he was lean in 6th and didn't have the fuel he needed to provide the power to pull the 6th gear. My 2 cents.

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Red is right on...6th gear requires more fuel than 3rd or 4th....the more of a load, the more fuel it takes....Just like a car.....great fuel mileage at 60mph, but it goes downhill the faster you go....the wind resistance causes more of a load....

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I jetted in my friends shee w/ T5's and couldn't believe it liked the 350 mains in CA.......Read the plugs, that'll tell all, we can only get you close, you still have to fine tune it yourself....

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