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Big Bore jetting help
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[QUOTE="SFO, post: 961691, member: 21864"] OK, I'll give this one a stab... On the 2mm os 426 I went two sizes leaner on the main. After having the 97mm dyno tuned that carb and jetting worked perfect on a donor 400. You should be in the ballpark, don't be scared to go leaner on the main if it blubbers on the needle transition. BTW, who's kit and what elevation do you ride? [/QUOTE]
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Big Bore jetting help
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