Aluminum Trans Cooler Lines?

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  1. Badvert65

    Badvert65 Well-Known Member

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    I am considering 3/8 aluminum tubing for the trans cooler lines. A904 trans, manual valve body built for drag racing. Does anyone know if Aluminum will be a problem? I could get steel line, but Aluminum is much easier to work with.
     
  2. 493 Mike

    493 Mike FBBO Gold Member FBBO Gold Member

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    I used aluminum for mine but, have yet to drive the car (let alone assemble it). The only concern is work hardening causing cracks. As long as the lines are properly supported/restrained I believe it will be fine. I did use a short length of rubber hose at the transmission connections.
    Mike
     
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    • 451Mopar

      451Mopar Well-Known Member

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      • 68Moparmaniac

        68Moparmaniac Well-Known Member

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        I used Stainless for mine> It's not hard to work with as long as you have a halfway decent bender and flaring tools. Polish them up and they'll look good forever :thumbsup:
         
      • moes

        moes Well-Known Member

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        I used Copper Nickel for my transmission lines on my last car. It is easy to bend, makes perfect flares and it is corrosion resistance to. I've seen it used for gas and brake lines on friends cars. Much easier to use then steel or aluminum lines
         
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        • 451Mopar

          451Mopar Well-Known Member

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          I has aluminum fuel line that cracked at the fitting after a few years.
          The stainless lines are nice, but more difficult to bend and flare. Has issues with the stainless brake lines making a good seal, so got one of the honing type tools.
           
        • Badvert65

          Badvert65 Well-Known Member

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          Are the copper lines really better than aluminum? Both are relatively soft metals.
           
        • 65Fury440

          65Fury440 Well-Known Member

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          Yea the AL will crack, the copper stuff is holding up on a couple builds I've done.
          It's really easy to work with too.
           
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          • Shorthorse

            Shorthorse Well-Known Member

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            I agree with others here. Aluminum can fatigue easily unless it's aircraft grade but I don't know how easy it is to flare. Just recently I had a chance to use copper/nickel for some brake lines. Great stuff.
             
          • Photon440

            Photon440 FBBO Gold Member FBBO Gold Member

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            It's not copper, it's copper/nickel alloy, usually known as cupronickel. It's a lot stronger than copper and very corrosion resistant.
             
          • Badvert65

            Badvert65 Well-Known Member

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            I guess I'll soon find out. I ordered 50 feet of the stuff.
            Thanks everyone for your input on this.
             
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            • 66Satellite47

              66Satellite47 FBBO Gold Member FBBO Gold Member

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              I have had real good luck with aluminum over the years for portions of both fuel & AT lines. I also have fairly good mounting combined with some amount of flexible material somewhere near the connections(short length rubber fuel line or Aeroquip}. Aluminum is easy to flare, holds up real well. Plain copper work hardens with vibration & cracks. IMHO. I've not used the copper/nickel.
               
              Last edited: Oct 1, 2020
            • dvw

              dvw Well-Known Member

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              I've had aluminum fuel line on my street car for 25 years. Never had an issue. Lasts longer than braided.
              Doug
               
            • coloradodave

              coloradodave FBBO Gold Member FBBO Gold Member

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              DSCN4008.JPG
              3/8" aluminum tubing I made up for my buddy's car. Been there 5 years. No leaks; Of course he's not taking it apart all the time like a racer might. I used copper/nickel alloy on the brake lines on my Plymouth. Very easy to bend (no tools required) and double flares come out great. I've had trouble in the past with S/S tubing sealing at the flares. Every flare required 'fine tuning' in order not to leak...
               
            • cbodybob

              cbodybob Well-Known Member

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              I’ve used aluminum fuel lines on every car I’ve built. I used copper lines for the brake lines on a 440 D150 Street/strip truck along with aluminum fuel line. No problems yet. I plan to use aluminum trans lines on FURYIOUS
               
            • 493 Mike

              493 Mike FBBO Gold Member FBBO Gold Member

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              Plain or alloyed copper tubing for brake lines?
              Mike
               
            • cbodybob

              cbodybob Well-Known Member

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              Plain ole parts store stuff
               
            • coloradodave

              coloradodave FBBO Gold Member FBBO Gold Member

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              • cbodybob

                cbodybob Well-Known Member

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              • Badvert65

                Badvert65 Well-Known Member

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