new carb and noisy expansion pipe exaust

Discussion in 'Introduce Yourself' started by MotorCyco, Jul 7, 2009.

  1. MotorCyco

    MotorCyco New Member

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    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.
     
  2. Dave31

    Dave31 Moderator
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    Welcome to motorbicycling.com MotorCyco, we are glad you joined us.
     
  3. Pablo

    Pablo Master Bike Builder & Forum Sponsor

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    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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