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4mm stroke but what carbs?


twinrock

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Nice bike man. From what I have seen on here, most people would say 35s if it has a very aggressive port job otherwise stick to the 33mm. I dont know anything about that cylinder, on a 4mil x 68 cub, jeff at fast had me go with 39mm carbs because they flow a lot.

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well the chambers are hand made by a pro pipe builder this is not in a quad ..but a road motor cycle

 

http://s36.photobucket.com/albums/e47/twin...ent=mito006.jpg

do you happen to know where the pipe is designed to make its most power at? this would help you figure out what carb would be best suited for you. its more then likely a 35

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  • 3 weeks later...

Sweet bike. I know lots of guys that run 33s to 39s with topend pipes,porting. I'd say if that's a bike for carving curves I'd stick a little smaller like 33/35 but if it's a bike you ride wide open a lot or drag a bunch then go 38/39. I know some seriously fast 421s and one of the fastest 7 mil cubs I know of with 35mm carbs. I like the snap and throttle response of the smaller carbs.

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