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Thread: Cat heat shield....

  1. #1
    Join Date
    Aug 2003
    Location
    Millbrook, Alabama
    Posts
    155

    Cat heat shield....

    This is probably a dumb question, but I'll ask anyway. How important is is that the heat sheild on top of the left cat be reinstalled? I'm sure it was there for a reason, but has anybody who has left it off experienced any problems?

  2. #2
    Join Date
    Jan 2003
    Location
    Roswell, Georgia
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    594
    Sometimes you can use the 'Search' feature. Here's one.
    http://www.sccoa.com/forums/showthre...&highlight=CAT

  3. #3
    Join Date
    Aug 2003
    Location
    Millbrook, Alabama
    Posts
    155
    Quote Originally Posted by sail7seas
    Sometimes you can use the 'Search' feature. Here's one.
    http://www.sccoa.com/forums/showthre...&highlight=CAT
    Thanks...I did search, and I did read that thread. I was just looking for more/other opinions. Thanks for taking the time to reply....

  4. #4
    Join Date
    Jun 2002
    Location
    Michigan!
    Posts
    775

    mm

    I don't think it will hurt anything to leave them off. My welds broke on the corners of mine, so i took a drill under the car, put a hole in each corner and a small nut and bolt to hold it back together. I coulda prolly just took it off, but I didn't because I was bored.

  5. #5
    Join Date
    Sep 2002
    Posts
    4,860
    I would but it back on unless your doing your exhaust soon. mine came off and the floor get a lot hotter with out it on.

  6. #6
    Join Date
    Apr 2002
    Location
    St. Charles, MO
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    21,151
    I don't think it's gonna matter much. When I bought my SCP exhaust system, it included downtubes with high flow cats. One of the cats was welded onto the downtube upside down with the sheild facing the road surface. I didn't notice it until after the exhaust system was already installed.

    I drove it that way for 3 or 4 years. The sheild eventually fell off because it would collect and hold water when going through a car wash and the spot welds rusted out. Probably better if it's on there, but IMO it's not going to cause a problem to run the car without it.

    David
    1991 SC AOD 4.2..2.3 Whipple..........10.910 @ 125.61
    2016 SRT Challenger Hellcat.............10.597 @ 135.78

    My Garage

  7. #7
    Join Date
    Oct 2004
    Location
    Carmel, NY
    Posts
    977
    two words.....weight reduction....
    No no, just kidding. I don't think it will hurt anything to leave them off, jsut don't park on any tall dry grass...

  8. #8
    Join Date
    Apr 2002
    Location
    St. Louis, MO
    Posts
    6,539
    You would probably be ok, but it does depend how close the CAT is to the floorboard.
    Kurt K (e-mail)
    SCCoA Member #: 443
    '92 SC AOD -- 11.521s @ 116.748mph, 2.0 AR power
    . . . . . . . . . -- 13.547s @ 101.01 mph, only w/ bolt-ons
    '95 SC 5spd -- All Stock, except 17" Simmons wheels.
    '90 SC 35th Anny 5spd -- 3rd owner, 16k miles
    2 '89 XR7 5spd's -- on their way out, really!

  9. #9
    Join Date
    Sep 2002
    Location
    Effingham.IL
    Posts
    5,011
    I removed every metal heat sheild on my exhaust.
    Except the cats.They are next.

    And I think my car sounds louder without the heat sheilds..

    Randy

  10. #10
    Join Date
    Apr 2002
    Location
    Allentown, PA
    Posts
    733
    If the heat shield is rattling, you can buy an extra long hose clamp from a hardware store, (I got mine from Home Depot), wrap it completely around the heat sheild and cat, tighten it up, cut off the excess, and no more noisy rattle.

    About a 10 minute job.

  11. #11
    Join Date
    Aug 2003
    Location
    Millbrook, Alabama
    Posts
    155
    No, actually, the reason I didn't put it back on was that one of the three small screws that hold the shield on broke off (the one on top) when removing my exhaust a while back during clutch replacement. I didn't want to put it back on to have it rattle until I drilled and retapped the bolt hole and I didn't have the tools to do it at that moment.

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