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Brake line sizes

Discussion in 'The Garage' started by orangeGMC, Aug 23, 2005.

  1. orangeGMC

    orangeGMC 1/2 ton status

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    Location:
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    I already used the search function and am a little confused on the opinions/data from others. I am going to install an adjustable proportioning valve in my truck for the rear disc brakes. I would like to mount it right next to the master cylinder. But I don't know which line is front or rear out of the master cylinder. From what I read different master cylinders switch it front to rear resivoir. Is it the larger line or the smaller line for the rear brakes? And what sizes are those lines? I am also going to remove the stock proportioning valve and just "T" the front lines. Has anyone else done this?
     
  2. sweetk30

    sweetk30 professional hooker Premium Member

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    i did the swap. and 3/16 line for front and 1/4 line for rear. p.s. any of the adj units dont come with the correct 1/4 line adaptors. but i got some at the local napa. i made little bracket and mounted it to the maset with 1 nut for it to the bosster unit. keept it high and dry and easy to adjust .
     
  3. R72K5

    R72K5 Banned

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    Location:
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    yeh the larger one is the rear line it splits off to 3/16" at the axle diff housing hose

    fronts always 3/16" and stays same all way to the front brakes, drums or discs.

    good luck :D
     

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