S52/ZF clutch bled, but still mediocre

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  • funcrew
    E30 Fanatic
    • Jun 2007
    • 1223
    #1

    S52/ZF clutch bled, but still mediocre

    This is an S52 with E36 ZF trans and lightweight flywheel. The transmission crunches slightly going into gear and this is after installation of a new z3/2.5 shifter and bushings. The clutch engages pretty close to the floorboard, even after I reverse-bled the slave cylinder (supplying fluid at the bleed valve and pushing the air bubbles up into the master cylinder). The trans only has 75K or so on it, so I suspect that I'm not quite getting enough clutch disengagement.
    Pedal feels fine. In short, shifting is nowhere near as good as a bone-stock m20 and getrag.

    Is there any other factor besides bleeding that can buy a scootch more disengagement? Would going back to an OEM flywheel make a difference?

    Please use small words - I'm not that smart.
    "If the sky were to fall tomorrow, the tall would die first."

    -Dr. Paul Forrester



    Do I LOOK like I need a psychological evaluation???
    Tags: None
    • Danny
      Moderator
      • Feb 2008
      • 14217
      #2
      What slave cylinder are you using?

        Comment

        • funcrew
          E30 Fanatic
          • Jun 2007
          • 1223
          #3
          Originally posted by Danny
          What slave cylinder are you using?
          I couldn't say - The entire swap was done by the PO. What are the choices?
          "If the sky were to fall tomorrow, the tall would die first."

          -Dr. Paul Forrester



          Do I LOOK like I need a psychological evaluation???

            Comment

            • Danny
              Moderator
              • Feb 2008
              • 14217
              #4
              Well it could be the ZF slave or the 260 slave. I would assume you probably have the ZF slave and I've read about this on here before. Let me see if I can find it for you.

                Comment

                • Danny
                  Moderator
                  • Feb 2008
                  • 14217
                  #5
                  Here: http://www.r3vlimited.com/board/showthread.php?t=240734

                    Comment

                    • M-technik-3
                      I waste 90% of my day here and all I got was this stupid title
                      • Oct 2003
                      • 18946
                      #6
                      Have same set up and have no issues with engagement. It's smooth and works well. I did have to replace the slave yesterday because the seal failed in the -6 degree weather.

                      No leaks in the gearbox?
                      https://www.facebook.com/BentOverRacing

                        Comment

                        • jlevie
                          R3V OG
                          • Nov 2006
                          • 13530
                          #7
                          You could have a bad master cylinder.
                          The car makes it possible, but the driver makes it happen.
                          Jim Levie, Huntsville, AL

                            Comment

                            • funcrew
                              E30 Fanatic
                              • Jun 2007
                              • 1223
                              #8
                              Originally posted by Danny
                              Here: http://www.r3vlimited.com/board/showthread.php?t=240734
                              That is a most excellent thread. I will post up any further questions there.

                              Originally posted by M-technik-3
                              Have same set up and have no issues with engagement. It's smooth and works well. I did have to replace the slave yesterday because the seal failed in the -6 degree weather.

                              No leaks in the gearbox?
                              Gearbox is oil-tight.

                              Originally posted by jlevie
                              You could have a bad master cylinder.
                              Maybe. But there's no play in the pedal - It's firm from the very top of travel.

                              Thanks to all for your help - I'll jump over to the linked thread after this.
                              "If the sky were to fall tomorrow, the tall would die first."

                              -Dr. Paul Forrester



                              Do I LOOK like I need a psychological evaluation???

                                Comment

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