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  • TJ disc brake conversion

    I just did a disc brake conversion on my TJ.

    Parts

    2- rotors (resurfaced)
    2- calipers
    new pads
    new E brake shoes
    2- dust shields
    2- brake lines

    Donor vehicle - 1998 Grand Cherokee with Dana 35.

    My vehicle - 1998 TJ Sport with Super 35, 4.10's, auto and riding on 35's.

    This is a really simple modification. It is all bolt on and the results are excelent. I'm going to get a new proportioning valve from a 2003 Wrangler or a Grand Cherokee because the proportioning valve on my 98 is for drum brakes and the new Jeeps come with discs. I still need to get E brake cables from a Grand Cherokee. That should be this week. This modification will work on Dana 35's and Dana 44's. With the Dana 44 you need to get axle retainer from the dealer ($10 or less).

    http://www.stu-offroad.com/brakeconv/bc-1.htm


    This is the write up that I used to do my conversion.
    1994 Toyota, dual cases, 5.29 axles with ARB's

  • #2
    Very cool Al. How does it stop? Is there a noticable difference in stopping power?
    [COLOR=blue]Chris[/COLOR]
    SAVE JOHNSON VALLEY!!! - CLICK HERE
    Ya Savvy?

    Motech Performance

    Comment


    • #3
      Are you sure all the '03's come with rear disks? I thought it was only the rubicons.:confused:
      olllllllo <--- If you can read that, roll me over!

      Price is soon forgotton, quality is not.

      KG6OWO

      Comment


      • #4
        Originally posted by goodtimes
        Are you sure all the '03's come with rear disks? I thought it was only the rubicons.:confused:

        I'm pretty sure but I might be wrong.
        1994 Toyota, dual cases, 5.29 axles with ARB's

        Comment


        • #5
          I read that the 4 wheel disks were unique to the rubicon (as far as wranglers were concerned), but I have never looked to verify....but now that I think about it, I do recall seeing disks on the back end of a new grand while I was wandering around the dealer lot waiting on my window to be replaced.

          Either way, I'm sure a call (or trip) to the dealer would verify one way or the other. It would suck to find out after you already bought the part.
          olllllllo <--- If you can read that, roll me over!

          Price is soon forgotton, quality is not.

          KG6OWO

          Comment


          • #6
            Grands have had them for years, I can always use the Rubi valvel if needed.
            1994 Toyota, dual cases, 5.29 axles with ARB's

            Comment


            • #7
              Al,
              Any update on the Valve? A P/N would be cool
              [COLOR=blue]Chris[/COLOR]
              SAVE JOHNSON VALLEY!!! - CLICK HERE
              Ya Savvy?

              Motech Performance

              Comment


              • #8
                I haven't done the valve yet. I haven't decided if I will wait till after the Rubicon before I do it.
                1994 Toyota, dual cases, 5.29 axles with ARB's

                Comment


                • #9
                  How are the brakes working with the original proportioning valve? Have you thought about a aftermarket adjustable valve?
                  olllllllo <--- If you can read that, roll me over!

                  Price is soon forgotton, quality is not.

                  KG6OWO

                  Comment


                  • #10
                    Originally posted by goodtimes
                    How are the brakes working with the original proportioning valve? Have you thought about a aftermarket adjustable valve?
                    I was thinking the same thing
                    [COLOR=blue]Chris[/COLOR]
                    SAVE JOHNSON VALLEY!!! - CLICK HERE
                    Ya Savvy?

                    Motech Performance

                    Comment


                    • #11
                      Aftermarket adjustables are cool. We use them on the Race Car. When I finally get my D30 for the front, it will have Disc, and then someday a disc brake conversion for the D44 in the rear. Someday!

                      Comment


                      • #12
                        Wilwood makes a nice adjustable prop valve
                        [COLOR=blue]Chris[/COLOR]
                        SAVE JOHNSON VALLEY!!! - CLICK HERE
                        Ya Savvy?

                        Motech Performance

                        Comment


                        • #13
                          al, have you tried removing the o-ring from the prop. valve?

                          http://www.stu-offroad.com/brakeconv/bc-5.htm

                          otherwise, i've got a prop. valve from a ZJ with your name on it

                          Comment


                          • #14
                            Originally posted by cbremer
                            al, have you tried removing the o-ring from the prop. valve?

                            http://www.stu-offroad.com/brakeconv/bc-5.htm

                            otherwise, i've got a prop. valve from a ZJ with your name on it
                            I looked at that and the only o ring I saw was on the bolt that goes inside. Wasn't sure if that was the one to remove. I'll take the ZJ prop vavle.
                            1994 Toyota, dual cases, 5.29 axles with ARB's

                            Comment


                            • #15
                              removing the o ring works well. i did it for mine, and it is as if it were designed for the disci in the rear. your tj should be no problem at all with this. my late model yj, and your tj have the same booster.
                              the 88 yj has a weaker booster, and it (the pedal) was a bit soft after removing the o ring, but, still stopped fine.
                              good luck
                              >>>>>>>>>>>>>>>>>>>>>>>>>>
                              ERIK


                              95 yj, locked lifted, and ready to rock!

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