new carb and noisy expansion pipe exaust

MotorCyco

New Member
Hi Every one I have comleted my new 66cc project. I have done some mods today I installed a performance carb with an adjustable mixture screw & it has more pick up down low but Im still working out the top end as I used to get 50Kms with the stock carb and I get 47 now. I also got an expansion chamber which made it pick up even quicker but my neighbours were not too happy about the noise so I put the standard exaust back on and now..shft..shft.
 
What kind of carb?? Did you spend some time to dial it in?

What expansion chamber? Most have a small nipple for a silencer and a muffler. With a secondary muffler it can be reasonbly quiet - only loud at WFO.
 
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