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  1. #1

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    99 slh exhaust bolt breaks

    I need help. One of my exhaust to engine bolts broke, lost another one, and the rest were loose. So I got all new short ones kept the 2 long ones. Got new gaskets. Installed them all and went for a ride this morning. Rode for an hour and it happened again. This time the same bolt broke and 2 more fell out. Anyone knows what's going on?


  2. #2
    Polarisitis loonatik's Avatar
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    Were the bolts torqued correctly with torque wrench?
    Are mating surfaces of manifold and cylinder nice and flat?

  3. #3

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    Yes I torqued them to the manual specs. And yes I also cleaned both surfaces.

  4. #4
    David Drkvampire2001's Avatar
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    Quote Originally Posted by bummerzon View Post
    Yes I torqued them to the manual specs. And yes I also cleaned both surfaces.

    do you have the locking washer in place?

  5. #5

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    No it never had any. I looked at the part list and I did not see them there either

  6. #6
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    Are you installing the bolts that help support the pipe to the manifold? There are usually 2 more besides the 4 that attach the pipe to the top of the manifold.

  7. #7
    David Drkvampire2001's Avatar
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    There should be locking washer in place. on all those bolts

  8. #8
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    If they are the manifold bolts are you using Loctite on them? I have never had this happen to me, even without Loctite.

  9. #9

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    Yes it is the manifold bolts. Sorry for the confusion. And yes I am using blue lock tight that's what the manual said to use. And yes I do have the support bolts also...I noticed it is the same bolt that broke last time. It's the top short one on the rear cylinder

  10. #10

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    Maybe my motor mounts got weak and the motor is moving to much? I'm just guessing. How can you tell if you're mounts are bad?

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