Best LSD diff for M42 cars

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  • freeride53
    R3V OG
    • Jul 2007
    • 11972

    #31
    what is the stock open diff on my '91 318i 4 door 5spd?

    1991 BMW 318i (Old Shell RIP, Now Being Re-shelled & Reborn)
    1983 Peugeot 505 STI
    1992 Volvo 240 Wagon
    2009 Toyota 4Runner SR5 Sport 4WD

    Comment

    • ///digitalme
      R3VLimited
      • Dec 2009
      • 2088

      #32
      Originally posted by freeride53
      what is the stock open diff on my '91 318i 4 door 5spd?

      i believe it should be 4.10

      Comment

      • kwill22
        E30 Modder
        • Apr 2009
        • 962

        #33
        I got an open 4.10 in mine and it doesn't kill your mileage on the highway unless you're doing 90. If I do cruise at 80 I still get 30MPG's and my revs are at 3500-3600. That's on flat road though not hills. My city is mostly highway.

        Really want a 4.10 LSD
        DENY IGNORANCE!
        Schwarz 325-totaled
        brilliantrot 318i-daily

        Originally posted by mkcman17
        don't think your hamster wheels are fast now. you will still have to give up when trying to pass that V6 odyssey to make your offramp.

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        • HarukoE30
          E30 Enthusiast
          • Nov 2011
          • 1057

          #34
          I'll be going S3.73 when I get it and install. I do a lot of town driving, but the highway seems like my next move soon so better gas.
          Originally posted by James Crivellone
          1) The internet is NOT serious business.

          Comment

          • wazzu70
            E30 Enthusiast
            • Jan 2005
            • 1143

            #35
            I had a 4.10 and I cant imagine anyone wanting less. Maybe if fuel mileage is your only concern!

            I switched to a G250 trans and am using a 3.73 diff, which is equivalent to a 4.27 with a G240. I think thats perfect for a fun car.
            -Nick

            M42 on VEMS

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            • 16v of E30
              Banned
              • Aug 2008
              • 157

              #36
              so what cars have variations of the small case LSD that fit into the 91 318is?

              Comment

              • xtos
                Member
                • Dec 2011
                • 81

                #37
                I'd trade my 4.1 lsd for a 3.73 any day.
                M42 just gets too noisy after 4k and that's barely over 130km/h.
                sigpic
                1990 318is M-technik2

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                • thebutcher37
                  R3VLimited
                  • Aug 2008
                  • 2877

                  #38
                  I just wanted to comment that Im currently running a g260 on my m42 with a med. 3.73 lsd. It's pretty nice, mpgs aren't so bad, not so revvy on the highway, its good for cruising but also quick when I step on it.


                  jou ma se poes in 'n fishpaste jar.
                  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~

                  Transaction Feedback

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                  • freeride53
                    R3V OG
                    • Jul 2007
                    • 11972

                    #39
                    Wow so the stock open diff in the 91 318i is a 4.10? No wonder highway cruising sucks....

                    1991 BMW 318i (Old Shell RIP, Now Being Re-shelled & Reborn)
                    1983 Peugeot 505 STI
                    1992 Volvo 240 Wagon
                    2009 Toyota 4Runner SR5 Sport 4WD

                    Comment

                    • jdirty
                      Grease Monkey
                      • Nov 2010
                      • 346

                      #40
                      My sig is m42 powered with an 4.10 open diff.
                      it's pretty good on gas... in town! lol :D
                      Last edited by jdirty; 04-30-2013, 02:07 PM.
                      sigpic

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                      • TobyB
                        R3V Elite
                        • Oct 2011
                        • 5163

                        #41
                        4.27 came in the auto cabrio only... quite possibly only in '91. So read the tag before
                        you yank at the pull-n-pay-n-pay.
                        It's a great track gear with an OD 5- speed.
                        And sometimes shows up on ePay for reasonable $$$...

                        t
                        now, sometimes I just mess with people. It's more entertaining that way. george graves

                        Comment

                        • Tisoc
                          Wrencher
                          • Jul 2011
                          • 249

                          #42
                          Originally posted by TobyB
                          4.27 came in the auto cabrio only... quite possibly only in '91.
                          My old 92' 5 speed Cabrio that came with a factory 4.27 lsd says otherwise.

                          Comment

                          • Balleristic31
                            R3V Elite
                            • Aug 2009
                            • 4198

                            #43
                            Originally posted by TobyB
                            4.27 came in the auto cabrio only... quite possibly only in '91. So read the tag before
                            you yank at the pull-n-pay-n-pay.
                            It's a great track gear with an OD 5- speed.
                            And sometimes shows up on ePay for reasonable $$$...

                            t
                            There were no auto m42 verts. At least not in the states

                            -NICK

                            Comment

                            • eur04lif3
                              Mod Crazy
                              • Jan 2009
                              • 756

                              #44
                              Originally posted by bmwm42
                              3.73
                              Yup, that's what I have as well. It's awesome on highways.

                              Comment

                              • TobyB
                                R3V Elite
                                • Oct 2011
                                • 5163

                                #45
                                hmm so maybe it was all 92 cabrios... at any rate, they're rather hard to locate...

                                t
                                now, sometimes I just mess with people. It's more entertaining that way. george graves

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