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Carbs for 421 Cub


ba_da_bing

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Hey guys! I just purchased a 421 and currently the only set of carbs I have is a set of PJ 34mm alcohol carbs. Do you think these will perform well or would it be a waste of time trying to use them? Guys around here are telling me 35 or 39 PWKs... If so, what's a good starting point for jetting at sea level with shearer sb/sf oof pipes? Thanks

Edited by ba_da_bing
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Thanks guys! I may just go ahead and get some 39s that a local guy has for sale. BTW what would be the most noticeable performance difference between 35 and 39 own alcohol?

 

Be careful buying used PWKs. If they are drilled too damn much (like most do) its a CS to get new dumps put in them. 

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