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Everything you wanted to know about brake boosters and master cylinders

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    #76
    Originally posted by matt View Post
    I needed about 6mm to fit the stock downpipes. It can vary some though.
    To do this properly, don't you have to also shave the intake side by the same amount, and do the same to your transmission mounts? Otherwise won't your drivetrain sit crooked? (I know it makes a small difference but when I was daydreaming about an LS1 swap, I was told to stay away unless I know what I'm doing because you have to make custom mounts and driveline alignment needs to be precise or you're setting up a timebomb)

    Also, Matt, can you post pics of your remote reservoir setup? You say you did something cleaner than the 740 setup, I'm sure we'd all like to know!
    Last edited by BigD; 02-26-2007, 11:25 PM.

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      #77
      Shimming a few mm won't hurt anything, your driveshaft will shift more than that when you hit hard bumps.
      1987 BMW 325is | Frankenmotor S50 | Supersprint Replica Headers | K&N Intake | Gutted Stock Midpipe | Zimmermann Rotors | Stainless Brake Lines | Porterfield Racing Pads

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        #78
        Originally posted by triggrhaapi View Post
        I found an IX booster and MC for around $80 from my buddy bill over at MSR. Call him at 201-675 6658 and see if he can get you one. If he can't I know he can find someone who can. Tell him Jason sent you.
        I already spent $160 on a new e21 booster, I would just like to know what is the best way to get this rod threaded. And a lathe won't work.
        Originally posted by 325Projectz
        don't listen to the diagram... listen to mr. swiss.
        :nice:

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          #79
          Originally posted by Mr.SWISS View Post
          I already spent $160 on a new e21 booster, I would just like to know what is the best way to get this rod threaded. And a lathe won't work.
          A die.

          I will try to get some pics. I used:

          2002 remote reservior - 34 32 1 112 399
          34 31 1 121 911 x2
          34 32 1 102 282 x2
          And some standard braided brake hose. That's all you need.

          Comment


            #80
            Originally posted by matt View Post
            A die.

            I will try to get some pics. I used:

            2002 remote reservior - 34 32 1 112 399
            34 31 1 121 911 x2
            34 32 1 102 282 x2
            And some standard braided brake hose. That's all you need.
            Man that's alot of metal to try and die off. the shaft needs to be milled down to the same as the e30 booster to tap a m10X1.50 thread, are you suggesting tapping the outer shaft with a M12 and then drilling and tapping the fork larger? :-?
            Originally posted by 325Projectz
            don't listen to the diagram... listen to mr. swiss.
            :nice:

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              #81
              I have been suggesting using an iX booster from the start.

              You can cut it and weld it...

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                #82
                I tapped the shaft with a M12x1.75 die first, then filed the threads off. This put me at around 10.5mm in diameter. I then filed a little more material, then used a nice high quality M10x1.5 die to make some threads.

                I believe cutting M12 threads and drilling the stock brake fork a little larger and tapping M12 threads would also work; there's a good amount of material on that fork.

                Originally posted by whysimon
                WTF is hello Kitty (I'm 28 with no kids and I don't have cable)

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                  #83
                  Originally posted by FredK View Post
                  I tapped the shaft with a M12x1.75 die first, then filed the threads off. This put me at around 10.5mm in diameter. I then filed a little more material, then used a nice high quality M10x1.5 die to make some threads.

                  I believe cutting M12 threads and drilling the stock brake fork a little larger and tapping M12 threads would also work; there's a good amount of material on that fork.
                  Did it, it worked. Took me about 30 minutes from start to finish. I had a buddy chuck a drill on one side of the shaft and turn it slowly while I put a high grit pad on the buffer and hit it. bufffed a taper on the end after cutting it to length, then took a 13/32 bit and drilled out the fork and tapped it. PERFECT!! Just went and bought a M12X1.75 nut,and I was worried. :rofl:
                  Originally posted by 325Projectz
                  don't listen to the diagram... listen to mr. swiss.
                  :nice:

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                    #84
                    Sweet.

                    Originally posted by whysimon
                    WTF is hello Kitty (I'm 28 with no kids and I don't have cable)

                    Comment


                      #85
                      Originally posted by MR 325 View Post
                      I am also wanting more info on this. I have a 325iX booster and a 325iX master here ready to go. What is the reason for needing a remote res?

                      Matt
                      If that's the master you bought from me, it's not an IX master. It is from a 735i. It's the same as the 25mm E34 M5 MC

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                        #86
                        any way to custom make the reservoir lines? $80 is alittle much for some lines.

                        i have a ix booster and master cylinder but there is a 85 and 88 735i at the local yards. should i take the booster and masters and use it instead????
                        NEED SOME VINYL STICKERS???

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                          #87
                          i also have an IX booster/master that i was planning on using. i read this whole damn thread and the working combos still arent clear to me. i know i can use this setup, BUT will a remote reservoir be required?
                          IG: @Baye30

                          FRONT VALENCE IS ZENDER!!! STOP FILLING MY PM BOX PPL!!!

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                            #88
                            BUT will a remote reservoir be required?
                            The answer is yes.

                            Comment


                              #89
                              just bought mine from the dealer, was only $71 and looks very easy to make is i could get the connectors
                              NEED SOME VINYL STICKERS???

                              Comment


                                #90
                                Originally posted by BDSax View Post
                                any way to custom make the reservoir lines? $80 is alittle much for some lines.
                                Originally posted by matt View Post
                                I used:

                                2002 remote reservior - 34 32 1 112 399
                                34 31 1 121 911 x2
                                34 32 1 102 282 x2
                                And some standard braided brake hose. That's all you need.
                                Dot.

                                Comment

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