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Thread: Hope not to have to pull the exhaust to re-rivet the muffler shroud

  1. #1
    cjutzi's Avatar
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    Default Hope not to have to pull the exhaust to re-rivet the muffler shroud

    I'm just looking for ideas here.
    Looks like the rivets on the muffler shroud have failed.
    I like to not have to pull the exhaust and muffler to fix it.
    Any ideas or tools anyone can think of.
    Pic attached20240119_112602.jpg
    Thx
    Curt

  2. #2
    walt.buskey's Avatar
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    Default Re: Hope not to have to pull the exhaust to re-rivet the muffler shroud

    Not from my perspective. I had some "hairline cracks" on one end that my A&P noticed a few years ago. We (he) went ahead and pulled the exhaust & muffler, and it's a good thing we did. The whole interior of the muffler was loose & rattling and BOTH ends had cracked, things we had no idea of when we started. Ended up sending it to Dawley for a --desperately needed-- complete rebuild.

    Unless that muffler's very new or recently repaired, I seriously recommend pulling it and giving it a thorough look-over --there's lots of stuff not visible/noticeable until you do. Yeah, I know it's a pain, but IMHO that's not something to skimp on....

  3. #3
    Administrator Steve Pierce's Avatar
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    Default Re: Hope not to have to pull the exhaust to re-rivet the muffler shroud

    It is not a structural part. Maybe a Cherry rivet or a stainless steel pop rivet. Stainless screw and AN363 nut.

  4. #4

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    Default Re: Hope not to have to pull the exhaust to re-rivet the muffler shroud

    Quote Originally Posted by Steve Pierce View Post
    It is not a structural part. Maybe a Cherry rivet or a stainless steel pop rivet. Stainless screw and AN363 nut.
    Looks like the holes are oversized, might be hard to get a cherry in there and having it hold unless you strap the backside.


    Sent from my iPad using Tapatalk

  5. #5
    Administrator Steve Pierce's Avatar
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    Default Re: Hope not to have to pull the exhaust to re-rivet the muffler shroud

    Screws ad nuts are the easiest option in my opinion looking at the clearance. If it was easy, everyone would do it.

  6. #6
    cjutzi's Avatar
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    Default Re: Hope not to have to pull the exhaust to re-rivet the muffler shroud

    Thanks for the input.. It's pretty tight either way... We will see. .

  7. #7
    Jim's Avatar
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    Default Re: Hope not to have to pull the exhaust to re-rivet the muffler shroud

    Hi,

    If you could get a washer on the inside using a paint mixing stick with a hole for allowing a pop rivet to pass through you could tape a washer to the stick and maybe pull off a pop rivet fix.

  8. #8
    grbamford's Avatar
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    Default Re: Hope not to have to pull the exhaust to re-rivet the muffler shroud

    I'm feeling your pain! during my annual this year we had the same issue. Got some brand spanking new rivets in there now. My mechanic tried a couple of different methods, we just ended up pulling the muffler out. Had to replace the stacks on the engine anyways, so it all just came out.

  9. #9
    cjutzi's Avatar
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    Default Re: Hope not to have to pull the exhaust to re-rivet the muffler shroud

    Thanks for all the input. I've pulled the muffler and it would end up being a patch on patches and maybe hold me for another couple years. I'd love to have a more than 2 years before I have to pull my exhaust again.

    Univair has a new one for $800 and I've seen some pretty ugly ones for $200.. and maybe a good tin guy can craft one for less?

    Is there a recommendation from the group?

    I think a new one might be the best option?
    Or if there is a clean used one, but I'm not seeing one.

    Thx
    Curt

  10. #10
    Administrator Steve Pierce's Avatar
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    Default Re: Hope not to have to pull the exhaust to re-rivet the muffler shroud


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