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    #16
    Art of Zen and BBKs

    Ah, ah, ah. I was asked to put my grain of salt in the discussion. I have commented enough in the past years on this forum. And we know how it ends ;-)

    Nonetheless someone mentionned the very wide selection of pads available for Wilwood's Superlite caliper (same pad shape as for AP Racing's CP8350 and CP8250 BTW). The available selection of pads should be an important element when you pick a caliper. Not to mention the specifics of the pad shape. In the case of the 7420 Superlite pad, it's a very thick 20mm. If you track, that means that you can very well spend a whole year on one set of pads.

    One other element that was mentionned in this thread is the availability of front AND rear kits. Doing front-only is fine if it is well balanced in term of braking power. But be aware that chances are that the front brakes will be able to handle more heat than the rear, and that if you start pushing, the rear rotors will reach their own thermal capacity limit. Solid discs don't evacuate heat as well as vented ones. Also, a 318i will not have the same weight distribution as a 325, or a swapped e30. Different weights on the front axle requires different piston sizes to properly fit a specific cars. Not to mention that some people like a front-heavy brake set-up, and others prefer a bit more rear. That can only be achieved if the BBK supplier offers a choice of pistons. The good guys at Ireland Engineering probably can offer different sizings as they use Wilwood calipers. That other supplier "that moved South" doesn't offer a choice of piston sizes as far as I know. Also, make sure that pistons are stainless steel and not aluminum if you want to keep your brake fluid cooler, longer.

    Also, identify if you need a light, medium or heavy duty kit. That would influence your choice of fixed discs or floating ones. There's no one size-fits-all BBK. Pick the one that fits your needs and budget best. If you say you never track the car, then get a light to medium duty BBK. If you track only twice a year, then you still need a heavier duty kit, unless you can settle for disapointment for those two times.

    As a sidenote, if there was a motorcycle section on R3V, you bet I would come here more often. ;-)
    Last edited by Massive Lee; 11-13-2013, 01:37 PM.
    Brake harder. Go faster. No shit.

    massivebrakes.com

    http://www.facebook.com/pages/Massiv...78417442267056





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      #17
      You and your damn motorcycles. Thanks for giving us a few facts :)

      Comment


        #18
        Originally posted by kendogg View Post
        You and your damn motorcycles. Thanks for giving us a few facts :)
        Sold the 2002 racecar w/ S14. Buying a BMW R1200GS for asphaltless treks. Keeping the K1200RS for most days. ;-)

        The e30 M3 is still available.

        Lee
        Brake harder. Go faster. No shit.

        massivebrakes.com

        http://www.facebook.com/pages/Massiv...78417442267056





        Comment


          #19
          Originally posted by Massive Lee View Post
          Sold the 2002 racecar w/ S14.
          Sacrilege, I'm going to drop off a basket case '02 onto your driveway in the night.
          ADAMS Autosport

          Comment


            #20
            Originally posted by SkiFree View Post
            Sacrilege, I'm going to drop off a basket case '02 onto your driveway in the night.


            I support this. I'll donate $10 towards rusted out '02 carcass.

            Comment


              #21
              alternate question, but related…
              has anyone done lighter calipers on the stock rotors? And added lighter stock sized rotors? For autox purposes, I have no need for more heat capacity, and am happy with the stopping power of hawk hp+, but the stock calipers are heavy.

              Comment


                #22
                I'm going to be putting a turbo m52 in the car and plan on eventually doing a couple track days a year. I've got a buddy with a track prepped civic hatch that is basically making me go out to the track and have fun. I'm just assuming the factory brakes will not be up the the task of 400hp and want to put brakes on while the motor is going in if not before.

                Comment


                  #23
                  Originally posted by hoyabmw View Post
                  alternate question, but related…
                  has anyone done lighter calipers on the stock rotors? And added lighter stock sized rotors? For autox purposes, I have no need for more heat capacity, and am happy with the stopping power of hawk hp+, but the stock calipers are heavy.


                  I think Lee is actually working on that for some of the E36 crowd if I'm not mistaken. While it can work great for autox, realize there will be compromises in overall brake efficiencies, especially track use.

                  Comment


                    #24
                    Originally posted by kendogg View Post
                    I think Lee is actually working on that for some of the E36 crowd if I'm not mistaken. While it can work great for autox, realize there will be compromises in overall brake efficiencies, especially track use.
                    My car will never see track use unless I decide it's not going to be an autox car any more. Way too easy to get into trouble, and I've cooked the stock brakes on the old suspension setup and street rubber (with PF90s--braking was fine, burned up all the rubber in the calipers.) I am concerned only about weight and still having decent stopping power (for 60 seconds at a time)

                    Comment


                      #25
                      Originally posted by hoyabmw View Post
                      My car will never see track use unless I decide it's not going to be an autox car any more. Way too easy to get into trouble, and I've cooked the stock brakes on the old suspension setup and street rubber (with PF90s--braking was fine, burned up all the rubber in the calipers.) I am concerned only about weight and still having decent stopping power (for 60 seconds at a time)


                      Get ahold of Lee then :)

                      Comment


                        #26
                        I believe Lee already has a lightweight setup for the e30s, it would be the street kit with the 2 piece rotors. Gain caliper stiffness of and decent pad selection(dynapro 4 pot calipers) while losing weight.

                        Massive-(7816 pad IIRC though Lee could confirm)
                        http://www.massivebrakes.com/brake-s...30_front_280mm

                        Example of pad availability

                        As does IE (Looks to use a 6712 pad though I'm sure skifree could confirm)
                        http://www.iemotorsport.com/bmw/E30-...e30bbk295.html

                        Example of pads Available ATM Notice that the caliper that IE is using is a newer design which has some advantages but at the loss of pad selection for the time being.

                        UUC's kit would also be light But I don't know what pads it runs b/c it wasn't available when I was originally shopping around and isn't clearly listed on their website.(most aren't actually)

                        I believe these are the pads available for the UUC e30 street kit though I wouldn't buy any of these kits until you personally confirmed the pad # and availability of a decent selection of pads for your intended use. (autocross is very different than track days brake wise)

                        Comment


                          #27
                          Originally posted by bimmerteck View Post
                          I believe Lee already has a lightweight setup for the e30s, it would be the street kit with the 2 piece rotors. Gain caliper stiffness of and decent pad selection(dynapro 4 pot calipers) while losing weight.

                          Massive-(7816 pad IIRC though Lee could confirm)


                          Example of pad availability

                          As does IE (Looks to use a 6712 pad though I'm sure skifree could confirm)


                          Example of pads Available ATM Notice that the caliper that IE is using is a newer design which has some advantages but at the loss of pad selection for the time being.

                          UUC's kit would also be light But I don't know what pads it runs b/c it wasn't available when I was originally shopping around and isn't clearly listed on their website.(most aren't actually)

                          I believe these are the pads available for the UUC e30 street kit though I wouldn't buy any of these kits until you personally confirmed the pad # and availability of a decent selection of pads for your intended use. (autocross is very different than track days brake wise)

                          I beleive stock or ST classes are going to force you to use an OEM rotor though, if I'm not mistaken.

                          Comment


                            #28
                            Originally posted by kendogg View Post
                            I beleive stock or ST classes are going to force you to use an OEM rotor though, if I'm not mistaken.
                            2013 Stock class on an e30 you can only change the bleeders, pads, and brake lines.

                            2013 ST and above allow BBKs IIRC Including larger 2 piece rotors.

                            Comment


                              #29
                              I'm running quite competitively in SP, but the Kodiaks I currently have don't clear the UUC kit. I'm going to look into Lee's street kit, but I still don't think it will clear due to the wheel barrel shape. HP+ on stock brakes stop the car just fine, but I'd like to drop some unsprung weight.

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