Loud knocking on frame! Why?
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This is a discussion on Loud knocking on frame! Why? within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; When I try to launch off the line or when I'm at about 80mph WOT I here and feel a ...

  1. #1
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    Loud knocking on frame! Why?

    When I try to launch off the line or when I'm at about 80mph WOT I here and feel a loud knock on the frame and I think it might be the exaust but im not sure. Any thoughts?

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  3. #2
    Boba Fett BrianH's Avatar
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    could be your exhaust smacking your rear diff.

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    Registered User rr1911's Avatar
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    Quote Originally Posted by BrianH View Post
    could be your exhaust smacking your rear diff.
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    Registered User bkotzman00's Avatar
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    try some new exhaust hangers and go from there
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  6. #5
    Administrator Trainrex's Avatar
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    It could be your exhaust smacking, your rear diff smacking due to a weak mount, or a bad rear diff.

  7. #6
    Registered User $lick Rick's Avatar
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    do you have a rear diff protector and aftermarket exhaust?

    if you do, it's a common problem
    some grinding of the diff protector or removal of it would probably solve your problem

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