Announcement

Collapse
No announcement yet.

Sealing Gas Shutoff Base & Crossover Line

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • Sealing Gas Shutoff Base & Crossover Line

    I'm trying to fix a small leak at the base of the gas shutoff rod where the cross-over ties in on my 48 pan. I've cleaned everything thoroughly, installed new brass washers, etc. I was wondering if anyone has coated the brass washers (both sides) with a TFE (chemical & gas resistant) paste with any success. The shutoff rod is aligned - no leaks when shut. Any suggestions?
    Thanks,
    William #10035
    William Edwards, AMCA #10035

    Attend the 2019 Southern National Meet at Denton Farmpark, NC, 17-18 May 2019
    http://www.amcasouthernnationalmeet.com/

  • #2
    William!

    The copper crushwashers used for the carburetor bowlstem are far more forgiving than the brass washers.

    Try 'em you'll like them,

    ...Cotten
    AMCA #776
    Dumpster Diver's Motto: Seek,... and Ye Shall Find!

    Comment


    • #3
      Cotten,
      That's a very good idea, thanks! I just reassembled the rod seat and crossover . . if she leaks again she'll get the crushwasher treatment!
      Ride safe,
      William
      William Edwards, AMCA #10035

      Attend the 2019 Southern National Meet at Denton Farmpark, NC, 17-18 May 2019
      http://www.amcasouthernnationalmeet.com/

      Comment


      • #4
        Could it be the joint on the fuel crossover line that is leaking?
        Be sure to visit;
        http://www.vintageamericanmotorcycles.com/main.php
        Be sure to register at the site so you can see large images.
        Also be sure to visit http://www.caimag.com/forum/

        Comment


        • #5
          Chris, I checked the joint during re-assembly. The joint looks solid & tight. Plus it didn't leak over night! Thanks
          William Edwards, AMCA #10035

          Attend the 2019 Southern National Meet at Denton Farmpark, NC, 17-18 May 2019
          http://www.amcasouthernnationalmeet.com/

          Comment


          • #6
            I wrap the brass washers with teflon tape. In and out until I have a good build-up of teflon tape. I have been doing this for many years on every early big twin with cross-over lines and never. . . Repeat, never had a leak.
            Eric Smith
            AMCA #886

            Comment


            • #7
              Eric, Thanks for another great solution! Should have scratched my brain longer . . . and I do have some gas resistant teflon tape (yellow)! Ride safe, William #10035
              William Edwards, AMCA #10035

              Attend the 2019 Southern National Meet at Denton Farmpark, NC, 17-18 May 2019
              http://www.amcasouthernnationalmeet.com/

              Comment


              • #8
                I make them out of PEEK, they never leak and are reusable, same with the carb bowl seal and the seat for the needle valve on the carb bowl. You have to be crative with all of that core material when you are paying lots of money for the solid tube just to make manifold seals. I even used it for a worn out axle sleeve on the garden tractor.
                Carl
                http://www.carlscyclesupply.com

                Comment


                • #9
                  Originally posted by Carl Olsen View Post
                  I make them out of PEEK, they never leak and are reusable, same with the carb bowl seal and the seat for the needle valve on the carb bowl. You have to be crative with all of that core material when you are paying lots of money for the solid tube just to make manifold seals. I even used it for a worn out axle sleeve on the garden tractor.
                  Carl
                  What the heck is PEEK?

                  Comment


                  • #10
                    polyaryletheretherketone

                    or a thermoplastic material typically found in sheet or rod stock
                    Rich
                    AMCA #8438

                    Comment


                    • #11
                      Now that we know the chemical makeup, would someone please explain what it is and how to use it. And where do you get it. Barry
                      Barry E Porter

                      Comment


                      • #12
                        PEEK is a plastic material which can be machined to whatever specifications you would like. I have gotten it from Curbell Plastics in the past for applications other that motorcycle parts.
                        Link Below
                        http://www.curbellplastics.com/engin...tics/peek.html
                        Rich
                        AMCA #8438

                        Comment

                        Working...
                        X