has anyone successfully cut the stock mufflers off and clamped in new?

Discussion in 'Exhausts' started by dwcopple, Jul 30, 2019.

  1. dwcopple

    dwcopple Active Member

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    I measured my '98 GT today and the outlet is 2.25" but the inlet tapers down to 2.11" before entering the stock muffler. Has anyone successfully cut the stock mufflers off flush and successfully clamped in an offset/offset 2.25" muffler? do the clamps crush the inlet enough to form a good seal there? Shops around here want $115+ to do it and if I can get away with clamps, I'll do it myself for pennies.
     
  2. ttocs

    ttocs Post Whore

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    probably, question is for how long?
     
  3. dwcopple

    dwcopple Active Member

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    It's not a daily driver. Just a toy car for me.
     
  4. evilcw311

    evilcw311 Most Evil Member! SN95 Supporter

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    Use band clamps.


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  5. dwcopple

    dwcopple Active Member

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    I'll try it I think
     
  6. 07GtS197

    07GtS197 Well-Known Member

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    Whats your budget?


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  7. dwcopple

    dwcopple Active Member

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    Cheap!
     
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  8. white95

    white95 Apex Junky Admin

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    Haven’t done it with my mustang but have with several trucks in past. It’ll work just fine with cheap stuff but spend a little extra for stainless hardware.
     
  9. dwcopple

    dwcopple Active Member

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    this car will never see rain or snow
     
  10. evilcw311

    evilcw311 Most Evil Member! SN95 Supporter

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    In Michigan?!?!! That’s a tough challenge!!!!


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  11. ttocs

    ttocs Post Whore

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    Do they do vehicle inspections? Will clamp on pass if they do?
     
  12. dwcopple

    dwcopple Active Member

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    No inspection in Michigan
     
  13. dwcopple

    dwcopple Active Member

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    So I might pull the H pipe when cutting off the mufflers and weld the front and clamp the rear.
     
  14. dwcopple

    dwcopple Active Member

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    so, I stopped by a shop that quoted me $50 per side on the phone but when they saw it on the lift, it suddenly changed to $80 per because "the hanger is welded to the stock muffler so I'd need to torch that off and reweld it to the new ones". They also said because the tailpipe bend happens so quickly after the muffler that it would be impossible to clamp it there. Said the whole thing needed to be welded. I told em no thanks and left. Now I am unsure what to do.

    I could cut the lead pipes to the mufflers and add in a section of 2-1/4 pipe with the mufflers welded to the extension and just dump after the mufflers and fab my own hangers but not sure I'd like dumps in a convertible. I wish there were a decently cheap cat back for these cars. It seems everything is $500+. I don't get how Dynomax or Summit never made an aluminized cat-back like they did for other cars for $225-250ish.

    :mad::mad::mad:
     
  15. 07GtS197

    07GtS197 Well-Known Member

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    I know you dont really want to spend a lot of money but, for what its worth, I bought flow tubes, mufflers and walker tailpipes separately for my 02 gt for less than a cat back would be. Also the mufflers are clamped in with no issue.


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  16. dwcopple

    dwcopple Active Member

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    Yep. I just learned about those last night. Ordering the flow tubes today
     
  17. dwcopple

    dwcopple Active Member

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    Flowtubes ordered $42 shipped off RockAuto
    Turndowns and clamps ordered off Advance for $22
    I have split flanges already to mount it all up. I will try to make the tailpipes work before I go with turndowns but we will see if it works. If not, a dumping I will go. I plan to cut the stock hanger off the rear of the OEM mufflers and weld it onto the Thrush mufflers I have. If that doesn't work, I'll weld a hanger to the clamp that I'll use on the rear of the new muffler.
     
  18. ttocs

    ttocs Post Whore

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    ya know I was assuming this whole time you did not know how or have access to welding it yourself.....
     
  19. 07GtS197

    07GtS197 Well-Known Member

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    I have m80s and theyre not welded but then again theyre not as heavy as a chambered design.

    Do you mind having a really bassy exhaust thatll rattle your change around or do you like the distinct sn95 v8 sound? That should dictate whether to go dumps or not.


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  20. dwcopple

    dwcopple Active Member

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    Does it matter if the tips point down or angled 45° to the sides? Sound change?