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French Locks

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  • Clark D.
    Expired
    • August 31, 2004
    • 50

    French Locks

    This will probably qualify as the dumb question of the day, however, I will ask anyway. What is the trick to installing french locks on the exhaust manifold and rear half shafts to keep them from turning and twisting (distorting them) when tightening the bolts?
  • Tracy C.
    Expired
    • July 31, 2003
    • 2739

    #2
    Re: French Locks

    I would try a daub of grease between the bolt head and lock.

    tc

    Comment

    • KEN EDMUNDS

      #3
      Re: French Locks

      anti-seize on both sides of the french lock.

      Comment

      • Joe L.
        Beyond Control Poster
        • February 1, 1988
        • 43193

        #4
        Re: French Locks

        Clark-----

        As Ken mentioned, anti-seize compound is the thing to use. However, I GREATLY prefer to use stainless steel french locks for both the manifold and half-shaft flange applications. Not only don't they rust, but they are far less susceptible to the "twisting" problem you described. Of course, it also harder to "bend the tabs over". I don't mind, though. Stainless steel french locks is NOT a substitute for the anti-seize compound; I still use anti-seize on the stainless steel locks.
        In Appreciation of John Hinckley

        Comment

        • Gary R.
          Extremely Frequent Poster
          • April 1, 1989
          • 1796

          #5
          Re: French Locks

          As Joe said use the SS ones. Bend the link down until you get to 70 ft/lbs (1/2 shaft locks) little never seize on the bolt head and tight evenly. Bend the tabs up and the link back to position.

          Comment

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