"new" brakeline question

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  • oldnortonrider
    XStremely XSive
    • Jul 2002
    • 448
    • Fayetteville, ARkansas 72701

    #1

    "new" brakeline question

    (?) brakeline that takes a screw-in banjo fitting on the end(s)~~ should the threads on the banjo fitting be wrapped with thread seal tape to get an A-1 seal?
    JCarltonRiggs

    81XS1100SH; WorkingMotorcycle,Not For Show,DeletedFairing,SportsterHL,
    7½ gal. Kaw Concours gastank,1972 Wixom Bros. bags

    79XS1100F; ?Parts?, or to Restore?
  • CaptonZap
    XS-XJ Guru
    • Jun 2010
    • 1748
    • Denver

    #2
    Originally posted by oldnortonrider
    (?) brakeline that takes a screw-in banjo fitting on the end(s)~~ should the threads on the banjo fitting be wrapped with thread seal tape to get an A-1 seal?

    There should be two copper washers, one on each side of the banjo, so that when the bolt is tightened, they seal both sides of the banjo. If you are using the old washers, take them and suspend them from a piece of iron (baling) wire, and heat them to a dull red with a propane torch. As soon as they get red, dunk them in water, and they will come out soft enough to fold in half. Do not use any kind of sealer in the joint, it may contaminate the brake fluid.
    CZ Old Goldie Rider

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    • DGXSER
      Doctor of XSology(Deceased)
      • Nov 2008
      • 12001
      • Cincinnati, Ohio

      #3
      Capt, I think he is referring to line sets with male end fittings, and the Banjo fitting gets threaded onto the end of the line. If it were me, I would not use tape on that joint. I am not certain the teflon tape will hold up to brake fluid.
      Life is what happens while your planning everything else!

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      81 XS1100 Special - Humpty Dumpty
      80 XS1100 Special - Project Resurrection


      Previously owned
      93 GSX600F
      80 XS1100 Special - Ruby
      81 XS1100 Special
      81 CB750 C
      80 CB750 C
      78 XS750

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      • crazy steve
        XS-XJ Guru MODERATOR
        • Jan 2009
        • 7932
        • Beautiful outer Yelm, WA

        #4
        Originally posted by DGXSER
        Capt, I think he is referring to line sets with male end fittings, and the Banjo fitting gets threaded onto the end of the line.
        If that's what he has, those should be AN fittings and no tape is needed. Sealing is done at the flare joint.
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        • oldnortonrider
          XStremely XSive
          • Jul 2002
          • 448
          • Fayetteville, ARkansas 72701

          #5
          Originally posted by crazy steve
          If that's what he has, those should be AN fittings and no tape is needed. Sealing is done at the flare joint.
          Ok; that's kind of what I had figured....................
          JCarltonRiggs

          81XS1100SH; WorkingMotorcycle,Not For Show,DeletedFairing,SportsterHL,
          7½ gal. Kaw Concours gastank,1972 Wixom Bros. bags

          79XS1100F; ?Parts?, or to Restore?

          Comment

          • WMarshy
            XS-XJ Guru
            • Apr 2009
            • 2402
            • Mexico NY

            #6
            Originally posted by CaptonZap
            There should be two copper washers, one on each side of the banjo, so that when the bolt is tightened, they seal both sides of the banjo. If you are using the old washers, take them and suspend them from a piece of iron (baling) wire, and heat them to a dull red with a propane torch. As soon as they get red, dunk them in water, and they will come out soft enough to fold in half. Do not use any kind of sealer in the joint, it may contaminate the brake fluid.
            CZ Old Goldie Rider
            Dont quench them in water it will temper them, just let them air cool and they will be more malleable. But in general, once then are crushed a few times then need to be replaced with new. You can likely buy replacements at your local auto store, just bring one with you to size up.


            Teflon tape will not hold up to break fluid so skip that idea, it just dissolves. I've used it on my bleeder screws to seal them up tight temporarily to use my mighty vac and have seen what happens. Its not something you want floating around in your break system.
            Last edited by WMarshy; 05-01-2013, 05:13 PM.
            '79 XS11 F
            Stock except K&N

            '79 XS11 SF
            Stock, no title.

            '84 Chevy K-10 "Big Blue"
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            "What they do have is an implacable, unrelenting presence and movement that bespeaks massive power lurking behind paint and chrome. They don't wail like a screeching ninja, the don't rumble like a harley. They just growl like a spactic, stressed out badger waiting to rip your face off and eat your soul." Trainzz~RIP~

            Comment

            • CaptonZap
              XS-XJ Guru
              • Jun 2010
              • 1748
              • Denver

              #7
              Originally posted by WMarshy
              Dont quench them in water it will temper them, just let them air cool and they will be more malleable.
              .
              Little known fact of materials time, guys.
              This is one of those things like "I before E, except after C, or when sounded like A, as in neighbor and weigh.

              Most of us by now know that steel quenched in anything makes the steel hard. Copper acts just the opposite. Yes, an air quench will soften copper, but a water quench will REALLY soften copper. Try it, and file that away as another one of life's mysteries.
              CZ

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