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Thread: If you need a little steel brake line advice.

  1. #1
    no water - no oil - wtf daddiodanger's Avatar
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    Feb 2007

    Thumbs up If you need a little steel brake line advice.

    I needed to replace my front right steel brake line. It starts at the distribution block and follows the firewall down under the frame to the rubber brake line. After some trial and error I apparently got something right, cause I'm still alive. So I'll pass on a little info.

    First, I bought some 3/16 x 25ft steel lines and a 37 degree flaring tool , tube bender and cutter from Summit Racing.

    I made two mistakes:

    1) the steel tubing kept cracking while flaring

    2) the 37 degree flare didn't hold the pressure.

    So i bought some 3/16 x 20ft Stainless Steel lines and a double 45 degree flaring tool from Summit. They cost more but not much.

    That solved my problem. the SS line was better and the 45 degree double flare gave the line enough flare to seal correctly.

    There is nothing to bending the lines, its fairly straight forward.

    Simple problem with a simple solution, but thats how we learn. I hope this can help someone. And maybe save a little money.

  2. #2
    Registered User d240zx2's Avatar
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    Sep 2007
    Houston, Texas


    SS is notable for its ductility, which you've just ably demonstrated. Good write-up.

    First & Third owner of HLS30-00721
    B. 01/70 D. 03/12

    New owner of HLS30-15653
    B. 12/70 D.

    Frank in Houston, Texas

  3. #3
    Registered User Walter Moore's Avatar
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    Oct 2002


    3/16 brake line is fairly easy to bend regardless of whether it is stainless, or regular aluminumized steel. In fact if you are careful you can adjust the bend angles without a bender.

    For a real challenge, try to bend the 5/8 steel tubing for the fuel lines... that stuff is a royal pain.
    '71 240Z, Because any fool can drive fast in a straight line.

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