Slotting the firewall to use the stock brake booster

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  • nrubenstein
    No R3VLimiter
    • Feb 2009
    • 3148

    #1

    Slotting the firewall to use the stock brake booster

    If I do this, will I have to do any reworking or repositioning of the pedals/master cylinder?
    2006 GMC Sierra 2500HD 4WD LBZ/Allison
    2002 BMW M3 Alpinweiß/Black
    1999 323i GTS2 Alpinweiß
    1995 M3 Dakargelb/Black
    - S50B32/S6S420G/3.91
    1990 325is Brilliantrot/Tan
    1989 M3 Alpinweiß/Black

    Hers: 1996 Porsche 911 Turbo Black/Black
    Hers: 1988 325iX Coupe Diamantschwartz/Black 5spd

    sigpic
  • mongule
    Advanced Member
    • Dec 2004
    • 177

    #2
    Yea the pedals wont line up anymore with the fork at the end of the booster... Easy to remedy if you trust your welding.
    87 OBDII 328is

    Comment

    • StereoInstaller1
      GAS
      • Jul 2004
      • 22679

      #3
      You taking about basically sliding the booster down, then repositioning the pushrod?

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      Comment

      • Dominic49
        E30 Fanatic
        • Feb 2007
        • 1373

        #4
        Originally posted by StereoInstaller1
        You taking about basically sliding the booster down, then repositioning the pushrod?


        yes slide the booster over


        but bolt the bushrod up to the pedal in a different manner

        Comment

        • 318isbmw
          Moderator
          • Nov 2005
          • 2841

          #5
          That may work, I'm sure it could be done. I've seen a few brake master cylinder kits for hotrods that go under the dash, but I think the time and money going into relocating it all is way more than getting a booster that would work.

          Comment

          • mongule
            Advanced Member
            • Dec 2004
            • 177

            #6
            We did it last year and pretty much all it involves a bit of welding. I cant remember exactly how it was setup but simple. pretty much just moving the fork by as much as you move the booster.
            87 OBDII 328is

            Comment

            • 1990m3
              E30 Enthusiast
              • Feb 2004
              • 1180

              #7
              you would also have to rework the brake lines that go to your master cylinder

              Comment

              • mongule
                Advanced Member
                • Dec 2004
                • 177

                #8
                Yes that also but no big deal.

                All in all its a better idea to just get a 325ix booster.
                87 OBDII 328is

                Comment

                • lifeiskaos
                  E30 Mastermind
                  • Dec 2007
                  • 1709

                  #9
                  e30this did this. hopefully he chimes in

                  Comment

                  • Fidhle007
                    I can fly, motherfucker
                    • Oct 2005
                    • 7209

                    #10
                    How come no one installs the IX booster upside down? Not only does that give enough clearance (offset bracket) but it locates the vacuum line in a much easier to access location rather then being wedged on the frame rail.
                    '89 325is S50 Track Montser
                    '04 X5 Daily/Tow Vehicle

                    http://www.avarestoration.com

                    http://www.myspace.com/brendanfiddle


                    Click here if you want to be my zombie slave...

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                    Comment

                    • lifeiskaos
                      E30 Mastermind
                      • Dec 2007
                      • 1709

                      #11
                      thats what we did...

                      Comment

                      • Kerrath
                        E30 Addict
                        • Jun 2008
                        • 577

                        #12
                        Yeah, flipping was necessary. I couldn't get the line anything close to fully in. I had it in like halfway, and it gave me vacuum boost for about 3 miles then fell out right before a big hill. Luckily it was almost to where I needed to get it at the time. Thanks to lifeiskaos' idea, it works perfectly now.

                        Comment

                        • e30this
                          No R3VLimiter
                          • Dec 2007
                          • 3580

                          #13
                          Originally posted by lifeiskaos
                          e30this did this. hopefully he chimes in
                          Smart cookie for remembering this...




                          Comment

                          • Mohammed_A
                            Grease Monkey
                            • Oct 2008
                            • 344

                            #14
                            i moved my booster closer towards the strut tower and lengthened the pushrod without any welding....



                            Comment

                            • nrubenstein
                              No R3VLimiter
                              • Feb 2009
                              • 3148

                              #15
                              Well, welding is easy. I guess we'll see which route I go. Thanks for the responses.
                              2006 GMC Sierra 2500HD 4WD LBZ/Allison
                              2002 BMW M3 Alpinweiß/Black
                              1999 323i GTS2 Alpinweiß
                              1995 M3 Dakargelb/Black
                              - S50B32/S6S420G/3.91
                              1990 325is Brilliantrot/Tan
                              1989 M3 Alpinweiß/Black

                              Hers: 1996 Porsche 911 Turbo Black/Black
                              Hers: 1988 325iX Coupe Diamantschwartz/Black 5spd

                              sigpic

                              Comment

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