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Thread: No welding on exhaust ??

  1. #1
    Join Date
    Dec 2005
    Location
    Alabama
    Posts
    7

    Default No welding on exhaust ??

    1993 525i 87K on it. I have a new oem rear replacement muffler and am ordering the oem middle muffler tonight. The middle muffler pipes each bolt to the end of the cat so it looks like no welding is needed there. Question is how do I join the end muffler and middle muffler, they look sleeved to slide together so can I just use 2 c-clamps and get away with no welding? Is there a rubber seal or anything in there ??

    TIA,

    JB

  2. #2
    Join Date
    Oct 2004
    Location
    Honolulu
    Posts
    3,105

    Default They come in two pieces

    so they are easier to ship, and replace.

    Welding is best (after you mock it up/ dry fit and tack weld it)

    You can use clamps, but not the U type, look for the band type for a good leak proof seal.


    Vee ave vays of dealing vid your kind...........

  3. #3
    Join Date
    Dec 2003
    Location
    Eastern Tennessee USi
    Posts
    14,839

    Default

    arent they stainless steel? If so you should mig them with stainless wire.
    95 E34 530I V2.37
    ===========
    Those who make peaceful revolution impossible will make violent revolution inevitable.

    John F. Kennedy

  4. #4
    Join Date
    Jan 2004
    Location
    Thunder Bay, Ontario
    Posts
    2,538

    Default

    Quote Originally Posted by Blitzkrieg Bob
    so they are easier to ship, and replace.

    Welding is best (after you mock it up/ dry fit and tack weld it)

    You can use clamps, but not the U type, look for the band type for a good leak proof seal.
    I use stainless U-clamps and i LOVE the sound the leaks provide. Brrrrrrmmm, brrrrmmm, bub bub bub bub......

    OK, I don't like the leaks, so listen to Bob.

    Dave M

    10/90 Build 525im, 630,000+km, Eibach/Sachs, Engine Rebuild
    *RIP Oskar the DOG *

  5. #5
    Join Date
    Dec 2005
    Location
    Alabama
    Posts
    7

    Default

    I searched for other types of muffler clamps but only found 'circular band seals' for turbo pipes - does anyone have a part or picture of a better muffler clamp ?

    I will try the u- clamps and some metal muffler tape to get me through until I can have it welded next week. maybe I can find some high-temp rubber donuts to seal the pipes better. Anything is better than the headpounding exhaust sound now I also need to act before my cats are fried from backflow heat build-up.

    Thanks to All,

    JB

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