i tried a 39mm and loss no topend at all.........and why people think that i don't know......a yfz comes with one,and it have verygood topend.Originally posted by Rico450R@Jun 8 2004, 05:17 PM
I know the 40 is a great carb, but wouldn't the 39 give you more bottom end than the 40. Where the 40 would give you more top end. I was just wondering. My idea is that Honda used a 40 because the crf dirt bike is so light, so they could afford to use the 40, but the TRX is 100lbs heavier, so wouldn't the 39 work even better for the track or short distance runs. It's not very often that some will run at top speed , but more likely to run in second and third! ecspecially if your at the track or the dunes! :huh:
86atc250r, what is your opinion on this subject?