how do i get the best out of stage 6 pipe?

the carb size is the standard 17.5 dellorto with a 62 main jet what is venturi?(the only thing done is malossi multivar 2000 variator with white contra spring but belt stil slips and malossi belt with 6.5grm rollers and leo vince exhaust and upjetted from 60 to 62 to stop in running lean) is it worth putting the leo vince clutch springs in? i got the stage 6 pipe because it should be better than a leo vince i plan to run it on the original 50cc cylinder

simon
November 2009

what type of carb is it and the venturi size?and the main jet size,i would also say 5 gram rollers would be better.ok

adam bike doctor
October 2009