does my 1984 325e have a LSD

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  • BTP325ic
    Banned
    • Apr 2009
    • 700

    #1

    does my 1984 325e have a LSD

    I know some of the ETAs came with 2.93 LSDs stock but, i am not sure which one i tried looking under the diff and looking for the S but there was to much dirt and what not and could not wipe it off. i am pretty sure i have a LSD stock 2.93 it feels like it when i do burn outs and what not. does anyone know what year the ETAs came stock with LSDs.
  • JasonC
    Site Manager
    • Aug 2006
    • 14451

    #2
    Unless someone put it in there, your eta should have a 2.79 open rear. And there is a thin metal tag on the diff cover on the right side that tells you what gears are in it and also if its a limited slip.

    1992 BMW 325iC
    1978 Chevrolet Monte Carlo
    1965 Chevrolet Corvair Monza 140hp

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    • wodcutr
      R3VLimited
      • Apr 2009
      • 2193

      #3
      If you really want to know if your diff is open just jack up a rear tire and try to spin it. If it rotates then you have an open diff, if it doesn't then it is an lsd. The tranny needs to be in neutral of coarse!
      The difference between porcupines and BMWs is that porcupines have the pricks on the outside!

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      • bimmer_E30
        R3V Elite
        • Dec 2007
        • 5001

        #4
        Originally posted by wodcutr
        If you really want to know if your diff is open just jack up a rear tire and try to spin it. If it rotates then you have an open diff, if it doesn't then it is an lsd. The tranny needs to be in neutral of coarse!
        This.

        mine was an 85 and had an LSD,Leather,OBC,etcccc
        Originally posted by e30e
        lose the old man bmwcca badge.

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        • BTP325ic
          Banned
          • Apr 2009
          • 700

          #5
          i looked at it a while back and it said 2.79 :(

          o well i guess i will have to get a poor mans LSD time to get weldin.

          Comment

          • bimmer_E30
            R3V Elite
            • Dec 2007
            • 5001

            #6
            i had a 2.79"s" on mine.

            actually it feels nice to drive with an LSD, you could spin the wheels so easly.

            i am pretty sure my Fail vert has an open diff. i am getting 4.10LSD for it soon.
            Originally posted by e30e
            lose the old man bmwcca badge.

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            • BTP325ic
              Banned
              • Apr 2009
              • 700

              #7
              yeah i might have saw a S but there was alot of dirt and i could not get it off.

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              • bimmer_E30
                R3V Elite
                • Dec 2007
                • 5001

                #8
                jack it up and spin both tires, if they both spin in the same direction, you have an LSD.

                i did that test while i was getting an oil change, i know for a fact that my current car has an open diff because i only spin one wheel. FML :(
                Originally posted by e30e
                lose the old man bmwcca badge.

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                • BTP325ic
                  Banned
                  • Apr 2009
                  • 700

                  #9
                  will do.

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                  • madformx5
                    E30 Modder
                    • Aug 2008
                    • 817

                    #10
                    I thought if the wheels spun in the opposite direction then you have an open diff. If they turn in the same direction then you have a LSD.
                    sigpic

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                    • madformx5
                      E30 Modder
                      • Aug 2008
                      • 817

                      #11
                      You can buy 3.73lsd pretty cheap. Why don't you just get one of them and wake your car up and leave the welder alone. The 2.79 rear gear is a dog. Welding the rear will make the make it bind going around tight corners.

                      Originally posted by BTP325ic
                      i looked at it a while back and it said 2.79 :(

                      o well i guess i will have to get a poor mans LSD time to get weldin.
                      sigpic

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                      • BTP325ic
                        Banned
                        • Apr 2009
                        • 700

                        #12

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                        • BTP325ic
                          Banned
                          • Apr 2009
                          • 700

                          #13
                          Originally posted by madformx5
                          You can buy 3.73lsd pretty cheap. Why don't you just get one of them and wake your car up and leave the welder alone. The 2.79 rear gear is a dog. Welding the rear will make the make it bind going around tight corners.
                          what do you mean by bind on tight corners?:D

                          Comment

                          • SpecM
                            R3V Elite
                            • Oct 2005
                            • 4531

                            #14
                            Originally posted by BTP325ic
                            what do you mean by bind on tight corners?:D
                            no, it will bind every time you turn the wheel
                            1989 cirrisblau-metallic 325i

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                            • bimmer_E30
                              R3V Elite
                              • Dec 2007
                              • 5001

                              #15
                              Originally posted by madformx5
                              You can buy 3.73lsd pretty cheap. Why don't you just get one of them and wake your car up and leave the welder alone. The 2.79 rear gear is a dog. Welding the rear will make the make it bind going around tight corners.
                              he drives an eta.

                              2.79S is good, if you want to upgrade get a 3.25LSD. great acceleration and very good fuel economy!:p
                              Originally posted by e30e
                              lose the old man bmwcca badge.

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