Best LA Exhaust Manifold Bolt sealant?

Mopar Exhaust Systems

  1. seabee

    seabee FABO Gold Member FABO Gold Member

    Messages:
    2,488
    Likes Received:
    657
    Joined:
    Dec 20, 2009
    Location:
    Bonita, CA
    Local Time:
    3:50 PM
    Hi Gang,

    Hope everyone is having great holidays. Had a rear exhaust manifold bolt releasing steam after shutdown. Any advice on the best sealant for these bolts that pass through the water jackets?

    -Thanks in advance
     
  2. mischiefdart

    mischiefdart Well-Known Member

    Messages:
    1,431
    Likes Received:
    72
    Joined:
    Jan 30, 2010
    Location:
    Newark DE
    Local Time:
    5:50 PM
    I would use a product sold by Toyota called "black seal packing" just like black silicone but it is eurethane and that stuff will seal anything. By far the best sealer I have ever used.
     
    • Like Like x 1
    • camd64

      camd64 Remember Landy

      Messages:
      1,593
      Likes Received:
      14
      Joined:
      Jun 22, 2008
      Location:
      cedar park, tx
      Local Time:
      3:50 PM
      I have been using Permatex ultra-copper. It's a high temp gasket maker.
       
      • Like Like x 1
      • C130 Chief

        C130 Chief Mechanical Genius

        Messages:
        3,064
        Likes Received:
        253
        Joined:
        Nov 23, 2005
        Location:
        Boise, ID
        Local Time:
        4:50 PM
        Heli-Coil

        Front and rear should be studs.
         
        • Like Like x 1
        • Woods74

          Woods74 Broke Senior

          Messages:
          6,001
          Likes Received:
          243
          Joined:
          Aug 21, 2010
          Location:
          Seattle, WA
          Local Time:
          3:50 PM
          Yup. It helps header bolts stay in too.
           
        • seabee

          seabee FABO Gold Member FABO Gold Member

          Messages:
          2,488
          Likes Received:
          657
          Joined:
          Dec 20, 2009
          Location:
          Bonita, CA
          Local Time:
          3:50 PM
          Thanks guys.
           
        • Johnny Dart

          Johnny Dart Well-Known Member

          Messages:
          8,329
          Likes Received:
          3157
          Joined:
          Nov 30, 2006
          Location:
          So Cal
          Local Time:
          3:50 PM
          Permatex high heat thread sealant. Permatex #59214

          Permatex ultra-copper is a gasket maker,not a thread sealant.
          It is silicone,do not put it on threaded parts,unless you like gunked up threads,when you disasemble. It is used for valve covers,oil pans,intakes.
          What you need is a thread sealant. Use the one I suggested.





          .
           
        1. This site uses cookies to help personalize content, tailor your experience and to keep you logged in if you register.
          By continuing to use this site, you are consenting to our use of cookies.