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  1. #1
    Join Date
    Aug 2004
    Location
    SoCal
    Posts
    1,008

    Muffler placement

    I tried to tuck the mufflers up underneath the body as tightly as possible, and I'm wondering if I've overdone it. They're only about an inch or so from the floorpan, and when I finally got my engine fired up and ran it for 10 minutes or so, the floor sure was HOT. Granted, I only had a single layer of dynamat without carpet yet and I would think that when the car is moving then it would cool it off somewhat, but should I move them down lower or use some thermal wrap? I'm definitely going to double up on the dynamat in the back seat area now.



  2. #2
    Join Date
    Jul 2003
    Location
    allen, texas
    Posts
    229
    use some cool it alumnized heat barrier it is a little pricey but worth it. i ordered some from jegs and they are on the underside of the floorpan with no problem and really cut down on heat. the thermal wrap retains water and deteriorates the muffler/header/tubing.

  3. #3
    Join Date
    Aug 2004
    Location
    SoCal
    Posts
    1,008
    Hmm, I was wrong - I checked it tonight and it's more like 2-3 inches...

    Are you talking about part number 893-14001, Thermo-Tec Aluminized Heat Barrier?

  4. #4
    Join Date
    Jun 2002
    Location
    Benicia, CA
    Posts
    1,436
    Country Flag: United States

    What's that melting smell???

    I had my muffler so close that I started melting my floor insulation. I stuffed a fat piece of industrial valve insulation between the muffler and the floor and the heat dropped almost all the way off. It was barely warm to the touch!
    Jeff
    1971 RS Camaro: PAINKILLER

  5. #5
    Join Date
    Sep 2001
    Location
    Accord, NY
    Posts
    2,270
    Country Flag: United States
    I have 1/4" in spots with some Thermo Tec self adhesive reflective stuff in those places with no problems.
    69 Camaro convertible, 410, M22, 8-pt cage therapy program. SOLD.
    68 camaro - SOLD
    67 Bel Air - New street project with perfect floors, frame and trunk!