Inboard Disc Brakes

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  • fastm30
    Noobie
    • Nov 2005
    • 17

    #1

    Inboard Disc Brakes

    I'm in the process of researching inboard disc brakes on my e30 with an m30. does anyone have any ideas or suggestions? any comments or help will be appreciated.
  • BahnE30
    E30 Enthusiast
    • Oct 2003
    • 1050

    #2
    just 5 lug it and E36 M3 breaks and be done with it........

    Comment

    • 1991 318is
      Mod Crazy
      • Dec 2005
      • 786

      #3
      Inboard brakes.

      Look under there and try to visualize them in regard to major surgery to rear subframe and floor.

      Comment

      • e30sd
        Fistee
        • Jan 2004
        • 5517

        #4
        if you want inboards buy a jag or a kart.
        sigpic

        Comment

        • JRKOUPE
          No R3VLimiter
          • Dec 2004
          • 3159

          #5
          Originally posted by fastm30
          I'm in the process of researching inboard disc brakes on my e30 with an m30. does anyone have any ideas or suggestions? any comments or help will be appreciated.


          Cant give you any positive comments but..... why in the world are you in to this idea?



          Do you track car?........ do 5 lug w/ M3 set up or just use better pads, good rotrs and ss lines...or even BBK. Inboard would be a huge job.........
          I love sitting down and just driving!

          Comment

          • Old'n'Slow
            E30 Addict
            • Nov 2003
            • 436

            #6
            Originally posted by fastm30
            I'm in the process of researching inboard disc brakes on my e30 with an m30. does anyone have any ideas or suggestions? any comments or help will be appreciated.
            What end result are you attempting to accomplish?

            Reduction of unsprung weight?

            WOW factor?

            Have stupid amounts of disposable income burning holes in your pockets and need to find a cause with which to put out the flames?

            I can't think of a sound reason to do this on an E30 from a mechanical or engineering standpoint. It seems like you're trying to teach a duck to surf. Maybe it can been done, but what's the point?

            Comment

            • cunninglinguist
              Wrencher
              • Mar 2004
              • 274

              #7
              I say do it. Nobody that I know has done so--but maybe in the UK somebody's done a Jag hybrid brake set-up. Cutting into the floor, modifying supsension attachment points ...

              Comment

              • fporro
                E30 Mastermind
                • Dec 2003
                • 1859

                #8

                Comment

                • fastm30
                  Noobie
                  • Nov 2005
                  • 17

                  #9
                  Inboard disc brakes

                  All I have to say to all of the Nancys out there who say I can't do it is that you're just jealous you didn't think of the idea first!!! Also, I would like to thank cunninglinguist and fporro for their support and drawings!!! Thanks guys!!


                  Peace Out!

                  Comment

                  • asubimmer
                    R3V OG
                    • Jul 2004
                    • 6482

                    #10
                    yeah I wish I had thought of waisting my money first...dang...ohhh well
                    ///Alpinweiß II 24v 91' 318is, Alpinweiß III 99' 323i, 04' Yamaha R6 SE for sale, 00' VW GTi, 83' El Camino BURNED, 01' P71sold, 92' Miatasold

                    Comment

                    • browntown
                      No R3VLimiter
                      • Jun 2004
                      • 3524

                      #11
                      Originally posted by e30sd
                      if you want inboards buy a jag or a kart.
                      have a colleague with a jag that he did the ever so popular sbc swap into. He bitches continually about inboard brakes, and that car was designed to have 'em. There has to be some better projects you can throw your money and time at first.

                      Comment

                      • boom-monkey
                        E30 Enthusiast
                        • Oct 2003
                        • 1104

                        #12
                        Originally posted by fastm30
                        All I have to say to all of the Nancys out there who say I can't do it is that you're just jealous you didn't think of the idea first!!! Also, I would like to thank cunninglinguist and fporro for their support and drawings!!! Thanks guys!!


                        Peace Out!
                        Your an idiot. fporro posted a diagram of an Alfa Romeo. Why is it you think that inboard brakes are superior to a standard design?

                        Comment

                        • Dave
                          E30 RAT
                          • Nov 2003
                          • 11675

                          #13
                          Originally posted by fastm30
                          All I have to say to all of the Nancys out there who say I can't do it is that you're just jealous you didn't think of the idea first!!! Also, I would like to thank cunninglinguist and fporro for their support and drawings!!! Thanks guys!!


                          Peace Out!
                          Sure you could do it, I guess. But why?

                          There are so many proven setups that work. The engineering and fabrication that would go into what youpropose would be cost prohibitive.
                          Current Cars
                          2014 M235i
                          2009 R56 Cooper S
                          1998 M3
                          1997 M3

                          Comment

                          • 1991 318is
                            Mod Crazy
                            • Dec 2005
                            • 786

                            #14
                            Jealous? Can't?

                            I think you misread the posts. The point was not that you can't do it. It was that it would be difficult and expensive to do so and that the costs would far outweigh gain.
                            The benefits would be reduction of unsprung weight and the removal of brake forces from those suspension pieces.
                            The disadvantages are cooling, packaging, and not being able to use brake forces to offset anti-dive/lift during braking.
                            In F1 brakes are free of restrictions, are carbon and ceramic, and could easily be located inboard. They're not.
                            Jealous - no way - believe me, I have had more than my share of bad, impractical, and pointless ideas.
                            So go ahead. Let us know the results. There aren't any innovations that were the result of the "conventional wisdom" They are the products of people willing to go out there on that limb while every one else is telling them it's a bad idea. If it's turns out to be a good idea, then I'll be jealous. But not yet.

                            Comment

                            • Tangent
                              E30 Addict
                              • Mar 2004
                              • 476

                              #15
                              You also have the disadvantage of the brakes getting wet more easily in rainy conditions and having that moment of low/no braking force until the pads have swept the rotors dry. Not to mention the rotors are now more vulnerable to damage from road debris.

                              Comment

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