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Exhaust hitting floorboard??

This is a discussion on Exhaust hitting floorboard?? within the Firebird / WS6 forums, part of the Vehicle Specific category; I just got a custom Y pipe built for my car and it is hitting under the driver side when ...

  1. #1
    danman
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    Exhaust hitting floorboard??

    I just got a custom Y pipe built for my car and it is hitting under the driver side when I take off in 1st gear or get on it. What can I put between pipe and the car to make it not rattle. I wedged a shop rag in there for now, but I am looking for something heat resistant to put there. I was thinking about a high heat rubber spacer or something like that. I already tried heating it up and bending it down some. That didn't work.


    Does anyone have any ideas on what I can use?

  2. #2
    Senior Member Zboner's Avatar
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    mind use to do this, u need to get under there and just make adjustments to the exhaust and maybe try moving the hangers around that might fix the problem also

  3. #3
    American Muscle RedT/Anumber1's Avatar
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    Use space age heat resistant foam. developed by NASA. LOL
    Na just kiding, but I'm pritty sure there probably some kind of foam product you can wedge in there.

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    purple
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    The BFH mod..............

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    Story of My Life!! BIG D's SS's Avatar
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    I believe Texas Speed Shop has a y-pipe hanger that is about $50 dollars that is made to fix the problem. I had that problem with mine and just adjusted it, but worst case scenario there is a hanger to fix it.

  6. #6
    Junior Member Raymond K. Hessel's Avatar
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    In addition to the methods listed above, the following work to varying degrees:

    1. Poly motor mounts
    2. Welding a valve spring in between
    3. Heater hose

  7. #7
    Story of My Life!! BIG D's SS's Avatar
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    Quote Originally Posted by Raymond K. Hessel View Post
    In addition to the methods listed above, the following work to varying degrees:

    1. Poly motor mounts
    2. Welding a valve spring in between
    3. Heater hose
    Well you would need a stiffer tranny mount but that is gonna give you a vibration.

    Don't know about a valve spring you might need to remove it and it will still vibrate.

    The heater hose I tried that and it still hit and made a noise.

  8. #8
    Junior Member Raymond K. Hessel's Avatar
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    Quote Originally Posted by BIG D's SS View Post
    Well you would need a stiffer tranny mount but that is gonna give you a vibration.

    Don't know about a valve spring you might need to remove it and it will still vibrate.

    The heater hose I tried that and it still hit and made a noise.
    Like I said..."varying degrees". Poly motor mounts will more than likely solve any y-pipe banging problem. On the other hand, a heater hose, a valvespring, TSP's Y-pipe hanger, are all just band-aids.

  9. #9
    Life in the Fast lane sunsetorangess's Avatar
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    Yepp been there done that, i finaly gave in and had a shop cut out a section and reweld a new pipe in place of it too eliminte the annoying banging... I also learned that bc of the bangin my ls1 was bein "retarted". It was setitn off the whole knock sensor deal. After i got it fixed and drove it around, Wow thats what the ol ls1 use too feel like
    Big difference, almost like another car
    J
    2001 SS, Its not the car its the Driver that matters....

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