Repacking Modern Trials Bike Muffler-Ends

Discussion in 'Trials' started by motobene, Feb 24, 2019.

  1. Yinzer Moto

    Yinzer Moto Long timer Supporter

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    :lurk
    #41
  2. Navin

    Navin Long timer

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    If it was a GasGasp yood not have to choose!
    #42
    Yinzer Moto and Ride Sally Ride like this.
  3. Yinzer Moto

    Yinzer Moto Long timer Supporter

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    This does not look enjoyable

    #43
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  4. riabma77

    riabma77 Been here awhile

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    Repacking isn't enjoyable, no matter what type of muffler!

    Is there an aftermarket option to replace the OEM?
    #44
  5. Yinzer Moto

    Yinzer Moto Long timer Supporter

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    I don’t know. Having to cut it open and weld 30” of aluminum back together is going to suck.
    #45
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  6. riabma77

    riabma77 Been here awhile

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    It's hard to tell from the pics, but maybe is possible to adapt the muffler from a newer model? Probably less work than cut and weld?
    #46
  7. Yinzer Moto

    Yinzer Moto Long timer Supporter

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    A torch and put a shit ton of heat through it worked pretty well. We did the head pipe and the muffler. Sally’s bike is nice and quiet again. I just burnt it till it quite smoking. I did melt the outlet on the muffler a bit but I got it fixed back up.

    B1C0BA46-C390-4515-AC34-35F930DEB0E8.jpeg
    #47
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  8. Yinzer Moto

    Yinzer Moto Long timer Supporter

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    #48
    Navin and jonnyc21 like this.
  9. Beatprojim

    Beatprojim Beatprojim Supporter

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    Both Boomboom and I have cut open older Sherco mufflers, cleaned out the old junk, repacked, and then sealed it up again. I had a friend weld mine back together but Boomboom did something else? I forget what he did.
    #49
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  10. Takataka

    Takataka Been here awhile

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    Just finished burning out the front section of my TRS pipe with great success.

    I used an LPG gas torch to get the fire going in the gunk and then used compressed air to stoke it.
    If you don't have a compressor you could probably use a leaf blower or even a vacuum cleaner with blow option.
    No need for oxygen as air works fine.

    There is absolutely no need to fear melting the alloy exhaust as you can keep the casing cool with a garden hose throughout the process. You need to hose it regularly though as it generates serious heat if you blow it hard with air!

    I actually rubbed some soap in a few places on the exterior as a warning for over heating ( soap turns black well before alloy melts).

    It took about 30 minutes before the smoke stopped coming.

    Result- my bike sounds like brand new again!
    It was so noisy before!
    1557955651.jpg 778741944.jpg 1760903509.jpg
    #50
  11. y4m4

    y4m4 Calvin

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    I miss living in the middle of nowhere. I would have the whole fire department up my ass if I tried this.
    #51
  12. Takataka

    Takataka Been here awhile

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    The Mrs and I live a few hundred meters from the nearest neighbor so I only got one complaint..
    #52
  13. Takataka

    Takataka Been here awhile

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    OMG the bike has so much more torque now! Wasn't expecting that.

    Anyone with a barky/crackly exhaust has to do this.

    I had forgotten what the bike used to run like.
    #53
  14. Junglejeff1

    Junglejeff1 Long timer

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    I think I stunted the growth of the corn field across the road when I burnt out my last exaust.
    #54