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  1. #1

    Default 7.5 exhaust leak

    I have installed new baflfle plate and both gaskets. Water holds fine but exhaust is leaking a lot from the exhaust manifold. Is there a permetx gasket caulk that will seal the leak?

  2. #2
    Join Date
    Sep 2003
    Location
    New Tripoli, PA, USA!
    Posts
    15,190

    Default Re: 7.5 exhaust leak

    Did you use bolts that are too long (or the tapped holes were not cleaned out)? No way should it leak like that.

    Jeff

  3. #3

    Default Re: 7.5 exhaust leak

    Quote Originally Posted by fastjeff View Post
    Did you use bolts that are too long (or the tapped holes were not cleaned out)? No way should it leak like that.

    Jeff
    Good tip, I checked the treaded holes and they are deep enough. I may use a high tem permitex.

  4. #4
    Join Date
    Dec 2015
    Location
    maplevalley WA
    Posts
    3,469

    Default Re: 7.5 exhaust leak

    Permatex aviation just brush a light coat on both sides of the gaskets and snug the bolts down good. You should see a light bead squish out all the edges of the gasket.
    Last edited by kimcrwbr1; 09-30-2017 at 03:56 PM.
    It takes a nickle to go first class!
    If it aint broke dont fix it!!

  5. #5
    Join Date
    Dec 2015
    Location
    maplevalley WA
    Posts
    3,469

    Default Re: 7.5 exhaust leak

    Do not use silicone
    It takes a nickle to go first class!
    If it aint broke dont fix it!!

  6. #6
    Join Date
    Sep 2003
    Location
    New Tripoli, PA, USA!
    Posts
    15,190

    Default Re: 7.5 exhaust leak

    You should not need ANY sealant to get it to work properly. I suspect something is warped.

    Jeff

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