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  1. #1
    Join Date
    Jul 2009
    Location
    Australia
    Posts
    1,031

    Default Vintage MX Bike Silencer End Cap

    The silencer of a two stroke MX bike needs to be packed with fibreglass to keep the sound down and the horse power up.
    Back in the early days the silencers were welded shut so making them throw away. But with a little effort we can rebuild them.

    First cut the end off trying to make the cut as straight as possible.

    Ji
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    Grip it and Rip it

  2. #2
    Join Date
    Jul 2009
    Location
    Australia
    Posts
    1,031

    Default

    If there is any packing still inside remove it.
    Wear a face mask and wet the fibres first then place old packing in a sealed plastic bag.
    This old packing will be dead from oil and carbon.

    Ji
    Attached Images Attached Images
    Grip it and Rip it

  3. #3
    Join Date
    Jul 2009
    Location
    Australia
    Posts
    1,031

    Default

    I went down to my local ali shop and purchased tubes that were as close to the diameters as possible.

    Ji
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    Grip it and Rip it

  4. #4
    Join Date
    Jul 2009
    Location
    Australia
    Posts
    1,031

    Default

    Cut the tubes to the right length and turn or sand to fit.
    Bevel all edges for ease of fit.

    Ji
    Attached Images Attached Images
    Grip it and Rip it

  5. #5
    Join Date
    Jul 2009
    Location
    Australia
    Posts
    1,031

    Default

    Cut and shape the seperator plate and fit.

    Ji
    Attached Images Attached Images
    Grip it and Rip it

  6. #6
    Join Date
    Jul 2009
    Location
    Australia
    Posts
    1,031

    Default

    TIG weld up the internal tube.

    Ji
    Attached Images Attached Images
    Grip it and Rip it

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