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muffler knock

This is a discussion on muffler knock within the General Help forums, part of the LSx Technical Help Section category; i put a flow master cat back on my stock z28. although a tight fit, it work and sounded great. ...

  1. #1
    Junior Member AntiToyota101's Avatar
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    pewter
    02 z28

    muffler knock

    i put a flow master cat back on my stock z28. although a tight fit, it work and sounded great. I just had pacesetter headers and y pipe put on this weekend and with heavy gas peddle the muffler bangs rapidly against the heat sheild. Is there a good way to secure this better or do i switch to a smaller muffler. any help?

  2. #2
    Junior Member jz28's Avatar
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    Red
    02 camaro Z28

    did you get the 80 series cross flow? are you sure its the muffler and not the y pipe? when i switched to a 3" Y it started banging under acceleration. i just added a bump stop under the driver side and havent had a problem with it.

  3. #3
    Junior Member AntiToyota101's Avatar
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    pewter
    02 z28

    i dont know what series muffler. it was a ls1 kit from summit. i will try the bump stop. i just assumed it was the muffler because it is extremly close if not touching the heat sheild.

  4. #4
    Junior Member AntiToyota101's Avatar
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    pewter
    02 z28

    any pitecular bump stop and where can i get one. thanks alot for the help!!!

  5. #5
    Junior Member jz28's Avatar
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    Red
    02 camaro Z28

    http://www.thunderracing.com/catalog...&vid=3&pcid=54
    its by mufflex. just scroll down in the link and you'll see it.

  6. #6
    Member SilverSteen25's Avatar
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    Silver
    2000 Trans Am WS6

    If it ends up not being the y-pipe and it's ur muffler hitten the heat shield, add some washers to both hangers were they bolt on to the body and that will lower ur muffler away from the heat shield and should stop it from hittin it, also check where the exhaust goes over ur rear end and make sure everything has enough clearance on all sides

  7. #7
    Junior Member AntiToyota101's Avatar
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    pewter
    02 z28

    thanks everyone, i am going to work on it this weekend and let you know the verdict

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