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  • Fuel System: Gasket

    I just got a new fuel sending unit for my Hawk an I was wondering should you use gasket goo on the new gasket? It's a thick rubber one

  • #2
    No need if tank mounting surface is clean and rust pit free. Luck Doofus

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    • #3
      I use a bit of RTV. Before you install it check the resistance. chances are infinite! I think you should see about 4 Ohms on one end and 140 to 160 on the other- might want to double check my nos. I've put 2 "new" ones on only to remove them and re-install the old one after a good cleaning with contact cleaner.

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      • #4
        33 ohms to 240 ohms should be the range. seems all Stewart Warner senders and gauges need same resistance readings. luck Doofus

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        • #5
          No matter what the gasket material is, some people have trouble sealing that area while others never have any leak at all. A leak at the sender, or just a strong gas smell, might appear only when the tank is topped off.
          I like a product called E-Seal. Sold as a thread sealant, it is ethanol resistant. Apply a THIN layer to both sides of the gasket and the screw threads.

          Click image for larger version

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          AL SORAN RACING

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          • #6
            I agree with Dwain. Though the gasket should do the job on it's own, I worry about gas wicking the screw threads. A little thread sealer is cheap insurance.

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            • #7
              Click image for larger version

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              The original crushable copper gasket-washers under each screw will prevent leakage at the screws but if you can't find them, you can substitute Standard Thredseal Washer P/N 750-0002-10. See the article in issues 73 and 74 of the 56J Only Newsletter.
              Bill L.
              1962 GT Hawk

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