Everything you wanted to know about brake boosters and master cylinders

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  • Mike B.
    E30 Modder
    • Jan 2006
    • 987

    #121
    Bmjpv - Nice work!!

    Comment

    • MIKe30
      R3VLimited
      • Sep 2006
      • 2334

      #122
      Originally posted by nefarious7907
      thanks! btw, thats a siiick touring.
      Originally posted by drifty340i
      Im using a mk11 vw golf booster, bolts right up!
      mk11!!!! :eeek: must cost a fortune!

      haha, how do the brakes feel? normal... or not so good like some people say the e21 boosters make them feel?

      Comment

      • 1990m3
        E30 Enthusiast
        • Feb 2004
        • 1180

        #123
        got any pics of the MKII booster install?

        Comment

        • nefarious7907
          E30 Enthusiast
          • Jan 2005
          • 1170

          #124
          brake feel almost has to change. You are going to a smaller booster, so there is going to be some loss of assist. But the Mk I booster appears to be somewhat thick, so maybe its not too bad.


          http://www.cardomain.com/ride/657387

          Comment

          • Mr.SWISS
            E30 Fanatic
            • Nov 2005
            • 1251

            #125
            Anybody found a vacuum canister with the proper size fittings that isn't the size of a basketball? kthanxbai
            Originally posted by 325Projectz
            don't listen to the diagram... listen to mr. swiss.
            :nice:

            Comment

            • Mike B.
              E30 Modder
              • Jan 2006
              • 987

              #126
              Jegs has one that is 1L in size (5"x7" approx). It's a bit larger than the charcoal canister.

              I bought one for my Euro swap and it should fit under the MAF/Intake Boot.

              Comment

              • Mr.SWISS
                E30 Fanatic
                • Nov 2005
                • 1251

                #127

                This one?
                Originally posted by 325Projectz
                don't listen to the diagram... listen to mr. swiss.
                :nice:

                Comment

                • Mike B.
                  E30 Modder
                  • Jan 2006
                  • 987

                  #128
                  Yep, that's the one. It looks bigger in the picture than in person.

                  I plan on mounting it on the bracket that used to hold the air filter box. The only issue I see is the fitting size is smaller dia. than the vacuum hose. A hose clamp or step-down fitting may be necessary.

                  Comment

                  • sky_captnE30E36
                    Noobie
                    • Apr 2007
                    • 23

                    #129
                    Seriously, the intake manifold is EASILY modified to fit the stock booster.. Leaving the last two full length ribs on the back side, cut the plastic out, and using UV resin and fiberglass from any surfshop lay a new wall to the shape of the booster. 5 mins in the sun, light sanding, black paint, and you're done.
                    $20 vs. $150+ for the booster...

                    Comment

                    • Bmjpv
                      E30 Addict
                      • Mar 2007
                      • 561

                      #130
                      24v with stock booster !

                      Glad to here that it worked out for you. I know it's really easy ,much cheaper (you e30 guys like that) and when matted up with a 25mm master (750i) you'll still have great brake . So you 24v swappers (US version) take a good look at this modification and protect those e30 with better brakes. I put up pics a couple of threads back about what I did. joe
                      Last edited by Bmjpv; 07-14-2007, 07:18 AM. Reason: updating

                      Comment

                      • dude8383
                        Forum Sponsor
                        • Jan 2005
                        • 10387

                        #131
                        Originally posted by nismoman
                        what about your clutch resevoir?? on the e cars. on the e cars using the getrag you have your hydrolic feed line running from the resevoir thats on top of the master cylinder. what are you guys doing about that???
                        Sorry to resurrect from the dead, but I noticed that no one answered his question, and well I have the same question.

                        What did you guys do about the line going to the clutch reservoir?
                        IG: deniso_nsi Leave me feedback here

                        Comment

                        • equate975
                          No R3VLimiter
                          • Jun 2004
                          • 3382

                          #132
                          Originally posted by dude8383
                          Sorry to resurrect from the dead, but I noticed that no one answered his question, and well I have the same question.

                          What did you guys do about the line going to the clutch reservoir?
                          First damn post man!

                          Originally posted by equate975

                          Get yourself an e30 325IX brake booster, I used an e34 m5 master cylinder part number 34331156978.

                          For the remote res.

                          http://www.realoem.com/bmw/showparts...34&fg=25&hl=15

                          GET THESE:
                          05 EXPANSION TANK GIRLING 1 34321160576
                          02 PLUG 2 34311163464 WILL NEED TWO OF THESE


                          Here is the parts




                          Put your booster and new master cylinder together, then it all just pushes together





                          I found that where I have my reservoir now, the lines can get caught in the throttle body linkage, also they get in the way of the intake boot

                          The best place I can find to mount it would be on the plate where the old airbox attached next to the ABS unit
                          Rollin' with a Geistkuchen

                          Comment

                          • dude8383
                            Forum Sponsor
                            • Jan 2005
                            • 10387

                            #133
                            Originally posted by equate975
                            First damn post man!
                            yeh yeh...i bought that reservoir already, i just wasn't sure if you guys were talking about the same one :)

                            thank you :)
                            IG: deniso_nsi Leave me feedback here

                            Comment

                            • m_dudey
                              Wrencher
                              • Dec 2007
                              • 267

                              #134
                              Originally posted by sky_captnE30E36
                              Seriously, the intake manifold is EASILY modified to fit the stock booster.. Leaving the last two full length ribs on the back side, cut the plastic out, and using UV resin and fiberglass from any surfshop lay a new wall to the shape of the booster. 5 mins in the sun, light sanding, black paint, and you're done.
                              $20 vs. $150+ for the booster...

                              any pictures of your modified intake manifold to fit the stock e30 booster?

                              Comment

                              • Bmjpv
                                E30 Addict
                                • Mar 2007
                                • 561

                                #135
                                intake mod

                                yes there are pics, look further back in this post. joe

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