Stock exhaust mod

Discussion in 'Intake & Exhaust' started by clay830, Apr 14, 2017.

  1. clay830

    clay830 Member

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    I removed only the end cap of the muffler on my 80/66cc bike kit. Will that do any harm to my engine because of back pressure and all? Or could I just leave it? I still have the baffler (all the other stuff) in though.

    what mods could I do to the stock exhaust that are ok for the engine?
    I have the exhaust that has a weld on baffle so unscrewing it isn't an option.
     
    #1 clay830, Apr 14, 2017
    Last edited: Apr 14, 2017
  2. clay830

    clay830 Member

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    Also my bike won't idle and moves slowly without throttle but if I hit the brakes on the bike and manage to get the bike to a complete or almost complete stop the engine dies? Need Help
     
  3. TheNecromancer13

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    Sounds like your clutch needs adjustment. Try tightening the cable.
     
  4. clay830

    clay830 Member

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    I tightened the cable and it doesnt seem to die anymore but still wont idle at all
     
  5. TheNecromancer13

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    Try increasing idle speed as well. Also what is your needle clip set at?
     
  6. clay830

    clay830 Member

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    I think I have the clip set to what it comes on. Im not sure. Why? what should I have it at?
     
    #6 clay830, Apr 15, 2017
    Last edited: Apr 15, 2017
  7. TheNecromancer13

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    The stock carb almost always runs too rich. Try moving the clip up a notch, and continuing to move it up one notch at a time and see where it runs best at. In my experience they usually run best at the leanest setting, but will usually still be running rich without a smaller main jet. They sometimes won't even start because they are so rich that they flood instantly.
     
  8. clay830

    clay830 Member

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    Are the floats supposed to be connected to anything inside the bowl or do they sit freely in there?
     
  9. TheNecromancer13

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    in the stock NT carb the float sits freely. Do you know what carb you have?
     
  10. clay830

    clay830 Member

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    stock nt carb
     

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