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Brake discolorisation

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  • Brake discolorisation



    Anyone elses brakes turn blue like this?

    They are accualy smoking in this photo, but you can't see it in the photo.


  • #2
    Wat they are that what happening when your brakes dont cool down... U need som ducting... I wouldnt worry... Thats why racecars have a warm down lap to cool brakes and tryes etc...

    Driving hard were we

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    • #3
      I may have been driving hard......

      They pretty much always look like that. Idont normally stop straight after driving like that, but i did that time to take a photo. I figured its not doing anything bad, as my pedal still feels good, though i should probly replace the fluid. Get some DOT 5 in there.

      Also note, the brakes where not fading at this point!

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      • #4
        mate, that 'discolourisation' is basically what heat treated metal looks like...
        steel turns different colours as it heats up, blue means about 300 degrees, nothing to worry about, if anything it stops rust on your rotors as the blue colour forms a protective layer over the top of the steel
        VW: it aint just a car, its a way of life
        There are few things more satisfying in life than finding a solution to a problem and implementing it
        My Blog: tinkererstales.blogspot.com.au

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        • #5
          Originally posted by ScienceVR6 View Post
          I may have been driving hard......

          They pretty much always look like that. Idont normally stop straight after driving like that, but i did that time to take a photo. I figured its not doing anything bad, as my pedal still feels good, though i should probly replace the fluid. Get some DOT 5 in there.

          Also note, the brakes where not fading at this point!
          Yeah its just heat disepation keep driving harder and left foot braking

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          • #6
            Originally posted by GoLfMan View Post
            mate, that 'discolourisation' is basically what heat treated metal looks like...
            steel turns different colours as it heats up, blue means about 300 degrees, nothing to worry about, if anything it stops rust on your rotors as the blue colour forms a protective layer over the top of the steel
            I'm goind to have to drive harder. What color comes after blue?

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            • #7
              Violet, then ultraviolet. See if you can keep pushing it and it might emit some X and gamma rays

              And if I'm not mistaken, our brake hydraulic system only takes DOT 4?
              Past: Mk3 Golf 2L 8V, Audi 8L A3T.
              Present: Mk3 Golf variant.

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              • #8
                DOT 4 is a minimum. best upgrade you can do is better fluid.
                Ever used a car with DOT 6 fluid? the pedel feels Great and doesn't boil the fluid when driven REALY REALY hard.

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                • #9
                  if you can get them glowing red hot (at around 700 degs off the top of my head).. well; I'll be impressed..


                  i like volkswagens
                  My blog: http://garagefiftythree.blogspot.com.au/

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                  • #10
                    after blue a brown colour i believe but that would be a serious effort
                    VW: it aint just a car, its a way of life
                    There are few things more satisfying in life than finding a solution to a problem and implementing it
                    My Blog: tinkererstales.blogspot.com.au

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