OT - Gas Tank send unit leak... Help please...

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  • Dennis C.
    NCRS Past Judging Chairman
    • January 1, 1984
    • 2409
    #1

    OT - Gas Tank send unit leak... Help please...

    OK, 1957 Nomad, new fuel tank, new sending unit, new rubber gasket. Send unit is exposed at about 3/4 to 7/8 full. Got a seep, screws are very tight. Was told cork gasket might be better...??? Any thoughts on a possible gasket sealant or double rubber gasket? Any ideas on how I might try to cure this issue? Of course, I'm looking for the easy cure. Thanks for any thoughts. DC
    Tags: None
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    • Geoff C.
      Expired
      • June 1, 1979
      • 1613
      #2
      Re: OT - Gas Tank send unit leak... Help please...

      Hmmmmm. Interesting thought about cork. As you know 63-74 Corvettes used 1/16” cork. But those are on the fuel filler neck and they generally aren’t submerged but do take a Sloshing (if that is a word.) Is the Nomad sender the same 5 holer as a C1?

      Geoffrey
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        • Mike M.
          NCRS Past President
          • June 1, 1974
          • 8288
          #3
          Re: OT - Gas Tank send unit leak... Help please...

          suggestion for self-prep of following sealant: 15cc jack daniels, 30Gm pine tar and 1 mg of massengill douche powder. have at it. mikie
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            • Denny J.
              Very Frequent User
              • November 1, 2000
              • 244
              #4
              Re: OT - Gas Tank send unit leak... Help please...

              I think the gasket has a kink in it.It may need to be reseated.May need new gasket if the screws made it worse.did you lube the gasket?
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                • Gary Schisler
                  #5
                  Re: OT - Gas Tank send unit leak... Help please...

                  Ok, I understand the Jack Daniels, I understand the pine tar as a sealant, but can you explain the douche powder? And just HOW do you know about this?

                  Gary
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                    • John D.
                      Extremely Frequent Poster
                      • December 1, 1979
                      • 5507
                      #6
                      Re: OT - Gas Tank send unit leak... Help please...

                      Dennis, Try some cure all stuff. Permatex Aviation #3 gasket sealant. I heard that that now it is made by Loctite. Trick is to let it sit up for a day or so. I use it for the hi-pressure pump seals on the FI's and as long as bubba hasn't used a chiesel to remove the seals-there are no leaks. Another one of my favorites that you could use is Loctite 545-hydraulic sealant. MSC or Travers sells it. It's my all time favorite. Shake the container and put it on with a q-tip or swab. Let it sit for a day or so also. I just thought of something. Now here this. You said rubber gasket. Probably the wrong kind of rubber. When gas hits it the rubber could be swelling up and leaking. I forgot about that. I've had some trouble of the years with repro rubber gaskets for the old FI's. Between the hi-pressure pump and the fuel bowl a thin rubber gasket is used as you well know. Well one of the old repros swelled and you know the rest. Make sure the gasket is at least buna-rubber. With today's corn gas though buna won't cut it. Switch to viton rubber. Or forget all the above and use a cheap hunk of cork with some good point deduction slop on it. On my little white car-the 63 the boys spotted a dab of slop on one of the inlet fittings on the fuel pump. Says on judging sheet-no sealant-. Yea rite. John
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                        • Dick W.
                          Former NCRS Director Region IV
                          • July 1, 1985
                          • 10485
                          #7
                          Re: OT - Gas Tank send unit leak... Help please...

                          It cannot be just any Jack Daniels, it has to be Gentleman Jack ONLY
                          Dick Whittington
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                            • Dick W.
                              Former NCRS Director Region IV
                              • July 1, 1985
                              • 10485
                              #8
                              Re: OT - Gas Tank send unit leak... Help please...

                              OK, 1957 Nomad, new fuel tank, new sending unit, new rubber gasket. Send unit is exposed at about 3/4 to 7/8 full. Got a seep, screws are very tight. Was told cork gasket might be better...??? Any thoughts on a possible gasket sealant or double rubber gasket? Any ideas on how I might try to cure this issue? Of course, I'm looking for the easy cure. Thanks for any thoughts. DC

                              Is this where we are hiding the nitrous bottle these days??
                              Dick Whittington
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                                • Dennis C.
                                  NCRS Past Judging Chairman
                                  • January 1, 1984
                                  • 2409
                                  #9
                                  Geoffrey, Looks like std 5 holer to me... DC *NM*

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                                    • Clem Z.
                                      Expired
                                      • January 1, 2006
                                      • 9427
                                      #10
                                      5 holer i remember 2 holers when i was a kid

                                      living out in the country.
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