Gas Tank?

Discussion in 'Fuel and Air Systems' started by TF360, Nov 26, 2018.

  1. TF360

    TF360 Well-Known Member

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    Ok, I'm installing a new gas tank cr11e in my 74 Duster. Got a new sending unit with it. The locking ring and rubber gasket fit right in on the Sender, but I read that it might not seal as good. Anybody installed this new Tank with new sender? Any issues with leaking? I can get the ring off the old Tank, but this new one should seal right?
     
  2. Dana67Dart

    Dana67Dart Most undignified way to get to Colorado!

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    Whats you plans for the old sending unit? Is it OE?

    On my 67 I used the OE ring and the new seal. leaked like a sieve. I added the old one on top of the new one and not another drop!
     
  3. TF360

    TF360 Well-Known Member

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    You put the old rubber seal on top of the new one?
     
  4. dano

    dano Evil Handy Man FABO Gold Member

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    If the ring rotates easy its not tight enough. Usually a small hammer and a brass or aluminum punch is whats needed to remove/install the lock ring and seal. Do not use a steel punch as sparks and fuel vapors don't mix well. Since its a new tank, there isn't much to worry about.
     
    Last edited: Nov 27, 2018
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    • Dana67Dart

      Dana67Dart Most undignified way to get to Colorado!

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      Yep. Made for a snug fit but it held and not a drop. I believe the lock ring welded to the tank is "stretched"out a bit
       
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      • Dusterdenovo

        Dusterdenovo Contentedly Old School FABO Gold Member

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        I put that tank in my car with a new sender / gasket but used the original lock ring. After a while it started leaking so I made a duplicate of the gasket out of a piece of a WW fluid jug and put it between the sender and the lock ring. It was the right thickness to snug it up a bit and hasnt leaked since.
         
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        • 383Scampman

          383Scampman Well-Known Member

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          As dano said , sometimes this is tricky and you need a brass drift to secure the lock ring . FYI the lock ring and seal are available separately if you mess up . I suggest that before you install the tank in the car that you put some water in the tank and turn it upside down to check for a leak . I that checks out put shop air or shopvac in the filler hole to dry up the water.
           
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          • TF360

            TF360 Well-Known Member

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            Anybody use the new sender and tank and not have issues using all the new parts?
             
          • famous bob

            famous bob mopar misfit

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            I used the same set up, w/ the orig. lock ring and new gaqsket, the new lock ring didn`t feel right and leaked. Had to pull the tank to do it, due to the closeness of the dana . Be sure to lubricate the filler neck and seal/ keep the neck squared up in the gasket------------
             
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            • Bad Sport

              Bad Sport HALF A BUBBLE OFF Staff Member FABO Gold Member

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              I would use the old lock ring. I had fits (leaked like a sieve) with the new one that came with my new sending unit, I used the old one and it was fine.
               
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              • Jimacuda

                Jimacuda Well-Known Member

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                72 Demon, new tank and sending unit, purchased separately. Both came with lock ring/gasket.
                I used the ones that came with the tank and not a drop leaked.
                I went with the theory that it was made to go with that tank so it should seal.
                Plus they just seemed to fit better.:D
                 
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                • TF360

                  TF360 Well-Known Member

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                  Thanks you guys. I'm going to try the new one and report back to you guys if it works properly.
                   
                • Dana67Dart

                  Dana67Dart Most undignified way to get to Colorado!

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                  What's you plans for the old sending unit? Is it OE?
                   
                • TF360

                  TF360 Well-Known Member

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                  I'm going to keep it Dana
                   
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