Timing belt replacement question

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  • ainadude
    Wrencher
    • Apr 2008
    • 221
    #1

    Timing belt replacement question

    I'm trying to complete a timing belt replacement and have run into the following snag: When I've got the belt and tensioner on with both crank and cam lobes in the proper positions, I end up with a little slack -- maybe a couple of degrees -- when I rotate the crank by hand. A friend of mine who's helping -- and says he's done the job several times -- insists there should be absolutely zero slack, that the cam should move at the same instant as the crank. Is this correct? I've checked a couple of online "how-to's' and haven't found any mention either way.
    ainadude
    Indian Wells, CA


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    • StereoInstaller1
      GAS
      • Jul 2004
      • 22679
      #2
      Are you aligning with the timing cover marks or the notch near the crankshaft?

      If you look at the crankshaft cover (the PITA around the timing belt) you will see a notch. Use that notch instead of the crankshaft pulley, you will have an easier time removing the slack.

      Closing SOON!
      "LAST CHANCE FOR G.A.S." DEAL IS ON NOW

      Luke AT germanaudiospecialties DOT com or text 425-761-6450, or for quickest answers, call me at the shop 360-669-0398

      Thanks for 10 years of fun!

        Comment

        • Dave
          E30 RAT
          • Nov 2003
          • 11675
          #3
          silly question - did you tension it?
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            Comment

            • funcrew
              E30 Fanatic
              • Jun 2007
              • 1223
              #4
              Originally posted by Dave
              silly question - did you tension it?
              Exactly. Did you let the tension spring put the correct tension on the Tbelt and then tighten the tensioner in that position?
              "If the sky were to fall tomorrow, the tall would die first."

              -Dr. Paul Forrester



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                Comment

                • joshh
                  R3V OG
                  • Aug 2004
                  • 6195
                  #5
                  It shouldn't have any slack...
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                    Comment

                    • SpecM
                      R3V Elite
                      • Oct 2005
                      • 4531
                      #6
                      +1 zero slack. Make sure you let the tension up on the driver's side, not the pass.
                      1989 cirrisblau-metallic 325i

                        Comment

                        • StereoInstaller1
                          GAS
                          • Jul 2004
                          • 22679
                          #7
                          Originally posted by SpecM
                          +1 zero slack. Make sure you let the tension up on the driver's side, not the pass.
                          This is why you need to make sure and NOT follow the Bentley; it is clearly wrong.

                          Try it my way and you will see the obvious logic behind it, plus the tension will actually make sense.

                          Closing SOON!
                          "LAST CHANCE FOR G.A.S." DEAL IS ON NOW

                          Luke AT germanaudiospecialties DOT com or text 425-761-6450, or for quickest answers, call me at the shop 360-669-0398

                          Thanks for 10 years of fun!

                            Comment

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