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Nasty rattle/vibration in exhaust at certain RPM's. '82 maxi

Discussion in 'XJ Technical Chat' started by bossfunk, Aug 15, 2011.

  1. bossfunk

    bossfunk New Member

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    I have something resonating on my bike at various RPM's. I think it may be the baffles in my left muffler? has anyone experienced this? it's driving me crazy! Is there an easy fix??? I'm laid off so an easy fix idea would make my day! I would like to take a sawzall and cut the damn mufflers off but I'm not sure how loud that would make it and I don't want to hurt performance.
     
    bossfunk, Aug 15, 2011
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  2. bigfitz52

    bigfitz52 Well-Known Member Premium Member

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    I've had a baffle broken loose in a 550 Seca muffler; it's not unheard of.
     
    bigfitz52, Aug 15, 2011
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  3. RudieDelRude

    RudieDelRude Member

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    Mine are cut about 6 inches past the baffles. I got mine in working order for about a week before I tore it all back down. It ran decent bench synced and tuned. It wasn't god awful loud or anything either.

    It's not too pretty though.

    Pics here http://www.XJBIKES.com/Forums/viewtopic/t=33375.html
     
    RudieDelRude, Aug 15, 2011
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  4. bossfunk

    bossfunk New Member

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    well I found the problem.... the primary kickstand rests against the exhaust. It was the cause of the noise. i just balled up some fiberglass insulation and stuffed it between the kickstand and the muffler. problem solved!!! thanks for your input everybody!
     
    bossfunk, Aug 18, 2011
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  5. bigfitz52

    bigfitz52 Well-Known Member Premium Member

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    Kickstand or centerstand? If you mean the centerstand, and you have stock mufflers, there is a bracket on the inside of the left muffler that's supposed to have a rubber bumper on it. If the bumper goes missing the stand will bang. You may just need a new rubber upstop bumper.
     
    bigfitz52, Aug 18, 2011
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