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  4. New Guy Looking For Help On 1991 318i Rear End

New Guy Looking For Help On 1991 318i Rear End

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  • jc43089J
    jc43089J
    jc43089
    wrote on last edited by
    #6

    I have a 4.10 and 3.15 both med case but they are both open difs. I recently bought a 3.23 LSD from an e36 M3 for 300ish, not am exact price but I bought several things together. That seems to be an average price for that ratio. I assume yours is a 5 spd?

    Sent from my potato phone

    2/94 325i Sedan, Arctic Gray: UUC LTW FW, EVO 3 and DSSR, +.020 Maxsil pistons, ASC delete, Eibach shocks/springs, 16" contour reps 238k
    3/93 325i Coupe, Schwarz 2, Sketchy stance action, ebay turbo, 300k
    '89 325i Vert, Alpine White: 5spd swapped, sold.

    '04 Toyota Sienna: 24V to 24V swap in progress

    '05 Volvo V70R, 6spd.  200k
    '85 Toyota LandCruiser: Lifted, gas hog. 205k
    '99 Nissan Maxima: 5spd, Rusty but trusty winter beater. 252k RIP.

    1 Reply Last reply
    0
    • T
      T
      teamjunk58
      wrote on last edited by
      #7

      Yes, my car is a 5-speed. While reading on line somewhere, it stated that 5-speed cars had open diffs and autos had limited slip. But I don't know if that is accurate. I honestly don't care what the gear ratio is, I just need to get out of the hole and one tire is not cutting it. I just need a cheap solution that will bolt in.

      1 Reply Last reply
      0
      • mkoeppM
        mkoeppM
        mkoepp
        wrote on last edited by
        #8

        teamjunk58 said:

        Yes, my car is a 5-speed. While reading on line somewhere, it stated that 5-speed cars had open diffs and autos had limited slip. But I don't know if that is accurate. I honestly don't care what the gear ratio is, I just need to get out of the hole and one tire is not cutting it. I just need a cheap solution that will bolt in.

        The LSD was an option and available with either transmission. You have to be careful what you read online, not all of it is legit.

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        • jc43089J
          jc43089J
          jc43089
          wrote on last edited by
          #9

          http://www.e30zone.net/e30zonewiki/index.php/Differential

          Here is some good info.

          2/94 325i Sedan, Arctic Gray: UUC LTW FW, EVO 3 and DSSR, +.020 Maxsil pistons, ASC delete, Eibach shocks/springs, 16" contour reps 238k
          3/93 325i Coupe, Schwarz 2, Sketchy stance action, ebay turbo, 300k
          '89 325i Vert, Alpine White: 5spd swapped, sold.

          '04 Toyota Sienna: 24V to 24V swap in progress

          '05 Volvo V70R, 6spd.  200k
          '85 Toyota LandCruiser: Lifted, gas hog. 205k
          '99 Nissan Maxima: 5spd, Rusty but trusty winter beater. 252k RIP.

          1 Reply Last reply
          0
          • CMartC
            CMartC
            CMart
            wrote on last edited by
            #10

            From your link:

            Diff-comp-02.jpg

            Does switching from small to medium or medium to small affect your needed driveshaft length? it looks so by the picture.

            Excursion 7.3
            E30 LS1

            1 Reply Last reply
            0
            • B
              B
              B C
              wrote on last edited by
              #11

              The two-piece driveshaft has a couple inches of length adjustability via loosening the collar nut on the splined connection

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              • i_love_carsI
                i_love_carsI
                i_love_cars
                wrote on last edited by
                #12

                i want to make sure OP is talking about the same thing everyone else is:

                we're talking about an LSD that's already installed to the pumpkin, which indeed is not that hard. 

                But if you are talking about taking a pumpkin apart and applying an LSD, you better damn sure know what you're doing. There are a myriad of things that can  go wrong if you aren't good and have the right tools. A lot of people don't know how to properly install an LSD and end up with things like backlash being way out of spec. 

                as long as you're talking about juts swapping in a new pumpkin with an LSD in it, then carry on.

                IMG6593.jpg

                2011 E92 M3 6MT ZCP - ESS 625 supercharged
                2007 Z4MR 
                2003 E39 M5
                2002 E46 M3
                2021 X5 40i

                1 Reply Last reply
                0
                • B
                  B
                  B C
                  wrote on last edited by
                  #13

                  Gear setup seems like as much of an art as engine rebuilding

                  1 Reply Last reply
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                  • T
                    T
                    teamjunk58
                    wrote on last edited by
                    #14

                    Yes, I am just looking to swap the whole case. I dont know how these carriers differ from a chevy rearend as far as assembly but I'd rather not find out. Haha.should I just post in the parts wanted thread or can any of you guys point me in the right direction?

                    1 Reply Last reply
                    0
                    • mkoeppM
                      mkoeppM
                      mkoepp
                      wrote on last edited by
                      #15

                      I found this awhile back. Looks like it is not too difficult. 

                      http://www.mye28.com/viewtopic.php?t=93418

                      1 Reply Last reply
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                      • T
                        T
                        teamjunk58
                        wrote on last edited by
                        #16

                        That doesn't seem bad at all. Hopefully I can just find an lsd soon. Would save me a lot of work. Thanks for the info!

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                        0

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