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  1. #1

    replacing d-plate, one of the (6) 8mm x 100mm bolts broke in exhaust

    Hi, I was replacing d-plate and one of the six screws that hold the muffler assembly into the muffler broke in the housing (needs helicoil) Are these are stainless steel?

    Is there a way to extract the screw from inside of the aluminum muffler?

    I took the whole pipe to a local napa machine shop, they were going to helicoil it yesterday, I was supposed to pick it up today but when I got there the machinist said they looked like stainless bolts and "how was he supposed to get the ss bolts out of the threads. he can't drill stainless"... He directed me to another local auto mechanics shop, they are also not sure if the bolts are considered stainless? Or if in fact they can make the repair.


    Thank you
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    Last edited by litegide24; 07-06-2007 at 11:05 AM.


  2. #2
    Chrisrokc's Avatar
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    The bolts are stainless steal. They have to be because it is marine application.

  3. #3

    do broken ss bolts come out?

    or is the entire muffler trashed?

    thanks

  4. #4
    My son (mohawk man) jeffsntx's Avatar
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    You can try to get it out but SS basicly "welds" itself to aluminum when it corrodes. If you cant get it out, let me know. I do have a stinger section that I will sell for $75.00 plus shipping. This is for the stinger section only.

  5. #5
    flyboy's Avatar
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    I had the same thing happen to me, buy the one here for 75, it will cost 50 for them to try to get it out...

    Do NOT run it with the one bolt missing, at high RPM's water will drip into the intake and you will wonder why you are loosing RPMs

  6. #6
    Happily Self-Employed WFO's Avatar
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    Quote Originally Posted by Chrisrokc View Post
    The bolts are stainless steal. They have to be because it is marine application.
    The stock head bolts are not stainless.

    I am not real sure about the exhaust bolts right there, but I doubt if its stainless.

    Can you pick one up with a magnet ?

  7. #7
    My son (mohawk man) jeffsntx's Avatar
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    Quote Originally Posted by WFO View Post
    The stock head bolts are not stainless.

    I am not real sure about the exhaust bolts right there, but I doubt if its stainless.

    Can you pick one up with a magnet ?
    I think WFO is correct. The ones that look chromed are not stainless. They are plated steel bolts.

    I forgot about that.

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