front brake Q

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  • rede30
    R3V Elite
    • Dec 2003
    • 4697

    #1

    front brake Q

    My front brakes are grabbing to hard. If I raise my car up, it is very hard to get them to rotate by hand. They have not been in use for about a year and a half and this was just after my first drive in them with the 320 booster. I am going to give them a few more runs but do you guys have any thoughts about why they are sticking?
    https://www.youtube.com/channel/UC-h...wE3UqwjjmaTrXg
  • 92 mtechnic cabrio
    Honesty is not the best policy!
    • Dec 2003
    • 4907

    #2
    sticky or rusted calipers hopefully
    R.I.P 07/01/09 - 04/23/10 :(

    Comment

    • 1991 318is
      Mod Crazy
      • Dec 2005
      • 786

      #3
      Clean and lube the guide bushings. If that doesn't work, it's probably the pistons sticking in the caliper body.

      Comment

      • rede30
        R3V Elite
        • Dec 2003
        • 4697

        #4
        yea i will probalby just take the caliper apart tomorrow. It is just weird that the rears are perfect and the fronts are wack.
        https://www.youtube.com/channel/UC-h...wE3UqwjjmaTrXg

        Comment

        • gazellebeigem3
          No R3VLimiter
          • Jun 2005
          • 3712

          #5
          Could be the rubber brake lines too. They can collapse and restrict fluid travel and make it seem like the caliper is seized. Though it sounds like it is an issue with the piston and/or slides from sitting.

          Comment

          • rede30
            R3V Elite
            • Dec 2003
            • 4697

            #6
            during this long overhaul, the car got new SS lines so it cant be the rubber. I took one caliper apart today and the slidders were perfect and everythign seemed fine. I am just going to drive it for a while and see if it works itself out. AFte rthe car sat for a few hours, the fronts lost all the extra pressure.
            https://www.youtube.com/channel/UC-h...wE3UqwjjmaTrXg

            Comment

            • 2002maniac
              R3V Elite
              • Feb 2005
              • 4260

              #7
              both sides? if so, I would not suspect bad calipers or brake lines. Check the installation of the MC. if the pushrod is sitting crooked the cylinder cannot release the pressure.

              Comment

              • rede30
                R3V Elite
                • Dec 2003
                • 4697

                #8
                Originally posted by 2002maniac
                both sides? if so, I would not suspect bad calipers or brake lines. Check the installation of the MC. if the pushrod is sitting crooked the cylinder cannot release the pressure.
                I am going to bump this because i got my car running and i want to drive the piss out of it. I am going to pull the master tomorrow but i cant figure out how the pushrod could be crooked and have the brakes still work so well. They stick to the point where i cant even push the car. Any ideas would be awsome, thanks
                https://www.youtube.com/channel/UC-h...wE3UqwjjmaTrXg

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