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Catalytic Converter Removal 93 ZJ

Discussion in 'Cherokee' started by TinyInkognegroT, Nov 1, 2019.

  1. Nov 1, 2019 at 9:37 AM
    #1
    TinyInkognegroT

    TinyInkognegroT [OP] Well-Known Member

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  2. Nov 1, 2019 at 10:03 AM
    #2
    TinyInkognegroT

    TinyInkognegroT [OP] Well-Known Member

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    That adapter that he's using to install the new cat converter, what size adapter from that to 2 1/4 is he using ?
     
  3. Nov 1, 2019 at 10:35 AM
    #3
    aggrex

    aggrex Well-Known Member

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    Looks like a reasonable method to install a replacement CAT. Like the band clamps. Those adapters are available at auto parts stores. Once you cut your pipe and have the replacement CAT in your hands start measuring the inner+outer diameters of all connecting pipes to find the adapter that best matches your combination. What adapter he used in the video might not work for your jeep or it could be the same. Post a comment on the video and he may answer.
     
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  4. Nov 1, 2019 at 2:11 PM
    #4
    aggrex

    aggrex Well-Known Member

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    He purchase a 2 1/4" ID coupler. Once you have all the parts that are to be connected together measured ID + OD then shop for couplers and/or reducer adapters.
     
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  5. Nov 1, 2019 at 2:52 PM
    #5
    TinyInkognegroT

    TinyInkognegroT [OP] Well-Known Member

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    I don't think I have enough money for the those clamps, but I have that sealant tape that he has and I can get some "u clamps".
     
  6. Nov 1, 2019 at 2:54 PM
    #6
    TinyInkognegroT

    TinyInkognegroT [OP] Well-Known Member

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    How many of those clamps would I need? He has a U clamp on the rear end of the cat and that other clamp on the front after he sealed it down with that tape, meaning he used one where he use the connector
     
  7. Nov 1, 2019 at 3:49 PM
    #7
    TinyInkognegroT

    TinyInkognegroT [OP] Well-Known Member

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    The size of that band clamp, should I get that in 2 and 1/4 or two and a half?
     
  8. Nov 1, 2019 at 4:41 PM
    #8
    aggrex

    aggrex Well-Known Member

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    Your situation may vary from what was used in the video. Buy what you think you need, finish the job and return the unused parts. Your universal CAT and adapters will dictate the width but U-bolt clamps should work too.
     
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  9. Nov 2, 2019 at 12:52 AM
    #9
    TinyInkognegroT

    TinyInkognegroT [OP] Well-Known Member

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    Whole exhaust pipe is 2 1/4 so I bought everything (band clamps and connector) in 2 1/4
     
  10. Nov 3, 2019 at 11:37 AM
    #10
    TinyInkognegroT

    TinyInkognegroT [OP] Well-Known Member

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    Cat converter is cut out... There's no honey comb in it left. And there's a piece rolling around in it... I knew that was the rattling sound.PHOTO_20191103_132142.jpg PHOTO_20191103_132126.jpg
     
  11. Nov 3, 2019 at 12:02 PM
    #11
    TinyInkognegroT

    TinyInkognegroT [OP] Well-Known Member

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    So I ran into a problem with the muffler... I have 2 options...#1 hanging it up somehow so I can drive because I'm going to need another pipe connector to attach the new cat converter. I broke the U clamp nuts and stud on both ends of the old cat converter trying to remove them. The only place I have to hang it from is the remaining pipe behind u clamp PHOTO_20191103_134139.jpg

    #2 I can remove the muffler and replace it with a straight pipe ...?
     
  12. Nov 3, 2019 at 12:07 PM
    #12
    TinyInkognegroT

    TinyInkognegroT [OP] Well-Known Member

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    PHOTO_20191103_134206.jpg

    The problem is I'm at someone else's house and I'll need to leave by today. The muffler is hanging about a couple of inches from the ground and I don't see where I can mount it with anything to bring it above the ground level its at. I also need another connector due to having to cut both ends of the cat converter to get it out. Not only do I need to leave here but I also need to leave to go by that connector and straight pipe and connectors and clamps to get the straight pipe in to replace the muffler
     
  13. Nov 3, 2019 at 12:32 PM
    #13
    TinyInkognegroT

    TinyInkognegroT [OP] Well-Known Member

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    Here are the dimensions of the exhaust pipe. The first picture is from the engine and the second picture is from the back of the car where your muffler goes out. These look to be two and a half inches in diameter, would I need to get two and three quarter inch connectors for these two ends ?PHOTO_20191103_141150.jpg

    PHOTO_20191103_142445.jpg
     
  14. Nov 3, 2019 at 3:30 PM
    #14
    TinyInkognegroT

    TinyInkognegroT [OP] Well-Known Member

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    I cut off the muffler. I'm going to attempt to straight pipe where the muffler was, after the converter.

    By the way, I didn't have to remove the O2 sensor to install this converter. I'll share the link, pics, and what I used when I'm finished.
     
  15. Nov 3, 2019 at 4:06 PM
    #15
    aggrex

    aggrex Well-Known Member

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    If that pipe is no longer round you might have to cut more.
     
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  16. Nov 3, 2019 at 5:56 PM
    #16
    TinyInkognegroT

    TinyInkognegroT [OP] Well-Known Member

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    It's round, I just cut it a little off angle, hard to reach lol
     
  17. Nov 3, 2019 at 6:09 PM
    #17
    TinyInkognegroT

    TinyInkognegroT [OP] Well-Known Member

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    PHOTO_20191103_143848.jpg The length of the muffler is roughly 27 inches long. A straight pipe of 2 inch and a half diameter, at 27 inches long should do the trick as far as straight piping it after the cat converter. What kind of steel pipe can/should I use to straight pipe where the muffler used to be?
     
  18. Nov 7, 2019 at 4:27 AM
    #18
    TinyInkognegroT

    TinyInkognegroT [OP] Well-Known Member

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  19. Nov 7, 2019 at 4:30 AM
    #19
    TinyInkognegroT

    TinyInkognegroT [OP] Well-Known Member

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    In case your wondering what tape is used, it's Rust -O- Leum Seal Leak tape. Welds together as it heats off the pipe..PHOTO_20191106_090352.jpg
     
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