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  • leaking gas tank

    Has anyone had a problem with the rear tank mount leaking? Last year i had the same leak. I used POR-15 on it, and took a lot of time to make sure everything was done right according to the directions. Even let it set two more days than i was supposed to, just to make sure it was cured. It did seal it, but now it is back, and worse. They said i now need to boil the tank to get rid of their product and redo it. I will have to weld completely around the rear mount, filling all the holes in the mount i guess. Anyone have a good solution? I reall don't want to have to paint my tank yet.
    1980 XS1100LG Midnight
    1991 Honda CBR1000F Hurricane


    "The hand is almost valueless at one end of the arm if there be not a brain at the other"

    Here's to a long life and a happy one.
    A quick death and an easy one.
    A pretty girl and an honest one.
    A cold beer and another one!

  • #2
    Nope. That is an odd place to have a leak.
    Skids (Sid Hansen)

    Down to one 1978 E. Stock air box with K&N filter, 81H pipes and carbs, 8500 feet elevation.

    Comment


    • #3
      Red coat

      You can have it dipper and redcoated inside at a radiator and fuel tank shop, it will kill the paint job and that will need red-one.
      1979 XS1100 Special (Mad Max, OEM) Current
      1980 XS1100 Special
      1990 V Max
      1982 KZ750 LTD Twin
      1986 700 FZR Yamaha Fazer (faster then expected)
      1979 XS750 Special (my 1st Special)
      1974 CB750-Four



      Past/pres Car's
      1961 Catalina 389/1970 Torino GT 351/1967GTO 12to1 comp./ Roller cam/ T-10/ 456 gear/Tri-power/1967 GTO 400, 1969 Camaro, 1968 Z28, 2001 BMW M Roadster 0 to 60 in 4.5 sec. Jaguar XK8

      Comment


      • #4
        I'm pretty sure Cobia had the same problem with his G, he used some kind of tank liner IIRC. His was leaking in an area by the tank mount that was inaccessible to braze/solder.
        2H7 (79) owned since '89
        3H3 owned since '06

        "If it ain't broke, modify it"

        ☮

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        • #5
          About a 150 buck fix in my part of the world but the acid dip and re-coat with the red liner worked well on two of my tanks.
          2-79 XS1100 SF
          2-78 XS1100 E Best bike Ever
          80 XS 1100 SG Big bore kit but not fully running yet.
          Couple of more parts bikes of which 2 more will live!

          Comment


          • #6
            I am a little afraid to trust the liner alone. That is what we did last summer. Need to close the leak with weld first, then seal. The tanking is just to get the old sealer out.
            1980 XS1100LG Midnight
            1991 Honda CBR1000F Hurricane


            "The hand is almost valueless at one end of the arm if there be not a brain at the other"

            Here's to a long life and a happy one.
            A quick death and an easy one.
            A pretty girl and an honest one.
            A cold beer and another one!

            Comment


            • #7
              I just finished putting a Caswell liner in my tank. It's now curing. I hope it works.

              Here's the chronicle of removing the old liner and rust, WITHOUT damaging the paint.

              XS650 Garage Tank Liner Failed.
              Marty (in Mississippi)
              XS1100SG
              XS650SK
              XS650SH
              XS650G
              XS6502F
              XS650E

              Comment


              • #8
                Red Coat-liner VS Red Kote

                The process I was talking about at the radiator / tank shop is a permant fix. I used it on a BADLY rusted KZ tank. It involves a chem. strip that will kill the paint and then the red coat -liner (not "Red Kote") is a solid at roon temp, so it is heated / melted "very hot" and poored into the tank. When it cools, it becomes a THICK solid again forever (unless you bike catches on fire and burns at 1000 deg)

                It cost about 50 bucks back when I had it done, and any paint remainimg must be removed and tank recon / repaint is needed. But from me at the time, and after failed attemps to seal that tank, it was worth it, it never even thought about leaking again Clearly, not for minor easy fix, or great paint job tanks. My tank was black, so some 2k fuel res. rattel cans, wet sand and buff, gold 3M pinstripe and it looked better then new
                1979 XS1100 Special (Mad Max, OEM) Current
                1980 XS1100 Special
                1990 V Max
                1982 KZ750 LTD Twin
                1986 700 FZR Yamaha Fazer (faster then expected)
                1979 XS750 Special (my 1st Special)
                1974 CB750-Four



                Past/pres Car's
                1961 Catalina 389/1970 Torino GT 351/1967GTO 12to1 comp./ Roller cam/ T-10/ 456 gear/Tri-power/1967 GTO 400, 1969 Camaro, 1968 Z28, 2001 BMW M Roadster 0 to 60 in 4.5 sec. Jaguar XK8

                Comment


                • #9
                  Did you look on E Bay about a tank? I see them come up from time to time or contact Andreas Weiss-a member on this board.
                  1980 XS1100 SG
                  Inline fuel filters
                  New wires in old coils-outer spark plugs
                  160 mph speedometer mod
                  Kerker Exhaust
                  xschop K & N air filter setup
                  Dynojet Recalibration kit
                  1999 Kawasaki ZRX1100
                  1997 Jeep Cherokee 4.5"lift installed

                  Comment


                  • #10
                    Do look carefully on the Standard tanks, sometimes the leak is fuel draining out the drain tube for water that gets caught in the filler cap indent. DBeardslee has that happen to him. The tube rotted out inside the tank.
                    Life is what happens while your planning everything else!

                    When your work speaks for itself, don't interrupt.

                    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

                    Comment


                    • #11
                      Got the tank all sealed up. Just about ready to roll.
                      1980 XS1100LG Midnight
                      1991 Honda CBR1000F Hurricane


                      "The hand is almost valueless at one end of the arm if there be not a brain at the other"

                      Here's to a long life and a happy one.
                      A quick death and an easy one.
                      A pretty girl and an honest one.
                      A cold beer and another one!

                      Comment


                      • #12
                        Originally posted by XS1100 Newbie View Post
                        Got the tank all sealed up. Just about ready to roll.
                        What did you seal it with?
                        Marty (in Mississippi)
                        XS1100SG
                        XS650SK
                        XS650SH
                        XS650G
                        XS6502F
                        XS650E

                        Comment


                        • #13
                          Had it welded all around the rear mount.
                          1980 XS1100LG Midnight
                          1991 Honda CBR1000F Hurricane


                          "The hand is almost valueless at one end of the arm if there be not a brain at the other"

                          Here's to a long life and a happy one.
                          A quick death and an easy one.
                          A pretty girl and an honest one.
                          A cold beer and another one!

                          Comment

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