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Exhaust Routing

Discussion in 'Early CJ5 and CJ6 Tech' started by chip biddle, May 8, 2018.

  1. May 8, 2018
    chip biddle

    chip biddle Member

    Stockton, Ca.
    Joined:
    Sep 26, 2002
    Messages:
    108
    How are you guys routing your exhaust off a 225 header setup? I have mine exiting right under the seats and it’s too loud for me and I would like to move to the rear but don’t see an easy path. Also, what type of muffler are you running?


    Thanks,

    Chip.
     
  2. May 8, 2018
    jjdebarros

    jjdebarros Sponsor

    Spokane, WA
    Joined:
    Dec 26, 2017
    Messages:
    66
    I am also interested in the approaches taken as I'll be doing this in the near future.

    I've seen the muffler behind the rear differential, angled from driver side to passenger side. I believe that this might have been the factory routing.

    I've also seen one routing that had the muffler on the left side before the rear differential, with 'interesting' loop over the differential in the left wheel well.

    I know these explanations are useless without pictures. I will try find a picture of both.

    Are you using the manifolds or headers?
     
  3. May 8, 2018
    chip biddle

    chip biddle Member

    Stockton, Ca.
    Joined:
    Sep 26, 2002
    Messages:
    108
    I am running headers, I have both right and left mufflers.

    Chip.
     
  4. May 8, 2018
    jjdebarros

    jjdebarros Sponsor

    Spokane, WA
    Joined:
    Dec 26, 2017
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  5. May 8, 2018
    Buildflycrash

    Buildflycrash More or Less in Line. 2024 Sponsor 2022 Sponsor

    Gulf Breeze FL...
    Joined:
    Jun 5, 2007
    Messages:
    3,600
    They told me there would be no math!:worry:
     
  6. May 8, 2018
    chip biddle

    chip biddle Member

    Stockton, Ca.
    Joined:
    Sep 26, 2002
    Messages:
    108
    That is awesome, I was hoping for something less custom and more muffler shop:).
     
  7. May 8, 2018
    Muzikp

    Muzikp Active Member

    Sacramento Ca.
    Joined:
    Sep 27, 2016
    Messages:
    1,450
    I ditched the headers and went back to manifolds so I could tuck the exhaust inside the frame rails and exit out the back. I didn't like having mufflers for rock sliders :D. I'm very happy with my choice. I'm using two cherry bomb type mufflers now, they were small and fairly easy to fit under there. Unfortunately I feel like it's still too loud, would love to tuck some better mufflers under there.

    My setup isn't amazing but I did do it myself. It was really hard for me since it was all new skills to learn.

    You can see one of the exits in this photo, the other side matches

    [​IMG]

    [​IMG]

    This is looking from the back. My exhaust stays inside the frame and then goes under the frame right at the axle to exit just behind the rear tires.

    [​IMG]

    Thought I had a better pic of my mufflers but I guess not, you can see part of the cherry bomb here

    [​IMG]
     
  8. May 8, 2018
    chip biddle

    chip biddle Member

    Stockton, Ca.
    Joined:
    Sep 26, 2002
    Messages:
    108
    Looks good James, nice work!

    Chip.
     
  9. May 8, 2018
    FinoCJ

    FinoCJ 1970 CJ5 Staff Member

    Bozeman, MT
    Joined:
    Jul 18, 2013
    Messages:
    5,629
    I don't have many great pics - but I run manifolds (front dump on driver side and rear dump on passenger side) into a single exhaust. The driver bends down under the manifold and goes back along the inside of the driver frame rail. The passenger dumps rear and goes across under the transmision/TC and merges with the the driver. Downstream of the Y-junction it stays inside the driver frame rail and goes over the rear axle and exhausts behind the driver side rear wheel (I run a rear tank so it was the best place to exit).

    Here is the junction - you can just see the passenger manifold to pipe flange. I have the OEM skid plate and the pipe fits above and the behind the bent up front lip of the skid so its got a bit of protection.
    [​IMG]
     
  10. May 9, 2018
    termin8ed

    termin8ed I didn't do it Staff Member

    Mason, MI
    Joined:
    Dec 22, 2002
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    4,422
    I hate how the guy installed mine. He put the muffler 2 inches from the back of the tcase so my od won't go in untill i fix it. Also ran the tailpipe out the back so the exhaust fumes blow back into the jeep.
     
  11. May 10, 2018
    Twin2

    Twin2 not him 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Virginia Beach, VA
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    1 7/8 tail pipe
    exhaust 1.jpg exhaust 2 .jpg exhaust 3 .jpg exhaust 4.jpg
     
    jjdebarros likes this.
  12. May 10, 2018
    chip biddle

    chip biddle Member

    Stockton, Ca.
    Joined:
    Sep 26, 2002
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    Ron- This is exactly what I was looking for, is it the same on the passenger side? what type of mufflers or you running and do you like them?

    Chip.
     
  13. May 10, 2018
    Twin2

    Twin2 not him 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Virginia Beach, VA
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    chip
    they are flowmaster 40 off set both sides
    been on jeep for more than 30 years now
    headers replace 3 times . exhaust pipes 2
    yes both sides are routed same
    much better than when they were just before tires
    a california muffler shop did them the first time
    and a local shop here did them again when I need them done again
     
  14. May 10, 2018
    chip biddle

    chip biddle Member

    Stockton, Ca.
    Joined:
    Sep 26, 2002
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    108
    I think I have the same Flowmasters, I will take your pictures with me to the muffler shop and route mine the same way.

    Thanks for your help.

    Chip.
     
  15. May 10, 2018
    CJ Joe

    CJ Joe Truckhaven Tough!

    Pinon Hills, CA
    Joined:
    Nov 9, 2002
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    390
    Nothing like the warm and fuzzy feeling when you open a link like that and see your own work. All kidding aside, I would say that was my best liked and most gratifying mod. No regrets there.
     
  16. May 10, 2018
    Warloch

    Warloch Did you say Flattie??? Staff Member

    Falcon, CO
    Joined:
    Mar 4, 2003
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    5,469
    Your other option - SuperTraps - they have tune-able disks and it's what I'm running on both the '49 and '51.
     
  17. May 11, 2018
    jjdebarros

    jjdebarros Sponsor

    Spokane, WA
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    Dec 26, 2017
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    Any chance you want to do it again? :D
     
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