Question about expansion chamber size

Discussion in 'Intake & Exhaust' started by Patchy, Aug 18, 2014.

  1. Patchy

    Patchy Member

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    Just to check, you want an expansion chamber to be around the same volume as the cylinder/head/intake right? If you have an expansion chamber larger than said volume does it lesson the effectiveness of the chamber? Or is this not a concern?

    I only ask because I stumbled upon an old thread...

    In the thread the OP shows an exhaust that he modifies to fix the standard 66cc/48cc bike motors. Super simple to do too, But the exhaust has a pretty large chamber.

    [​IMG]

    The Arrow Snake Pipe is also pretty big but I'm not sure if the two pipes are comparable.

    [​IMG]

    [​IMG]

    Whats your thoughts on this guys?
     
  2. Theon

    Theon New Member

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    The bigger the better,
    Not true, but, depends what your after,
    The pipe will be many times larger than the engines swept volume.
    I have two KTM pipes on bikes that work real well.
    The snake pipe looks better than the first pipe.
     
  3. Theon

    Theon New Member

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    The China header is too restrictive for a decent pipe.
     
  4. PIGEONHAWK

    PIGEONHAWK New Member

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    i agree but the puch is my vote

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