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which 6 speed transmission fits an m20?

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    which 6 speed transmission fits an m20?

    dose anyone know which 6 speed getrag will work on an m20? thanks.
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    mods: just meat and potatoes under the hood and wheaties on fire out back ;)

    #2
    i would assume the one that fits on an m/s 50/52
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    Originally posted by TimKninja
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      #3
      Z4 or Euro E36 M3 are the most common options.

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        #4
        is there anyone that has done this yet? what all would be involved?
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        mods: just meat and potatoes under the hood and wheaties on fire out back ;)

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          #5
          you'd need to shorten your drivshft

          '89 Alpine S52 with goodies

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            #6
            The E46 M3, E46 330 or the Z4 trans would be the better option since the Euro 6-spd is more costly .

            When I was looking around for prices last summer I saw them as low as $1500 which is very doable .


            YOu would need a custom shortened driveshaft and the trans would be rotated 10degrees off .
            You'd have to compensate that with a bent shift linkage .

            Other than that it seems pretty straightforward .

            E30 M3 / E30 325is / E34 525iT / E34 535i

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              #7
              Originally posted by Teaguer View Post
              The E46 M3, E46 330 or the Z4 trans would be the better option since the Euro 6-spd is more costly .

              When I was looking around for prices last summer I saw them as low as $1500 which is very doable .


              YOu would need a custom shortened driveshaft and the trans would be rotated 10degrees off .
              You'd have to compensate that with a bent shift linkage .

              Other than that it seems pretty straightforward .
              i'm going to assume this isn't going to work for an iX or will it?

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                #8
                no i wont

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                  #9
                  Originally posted by e30s52 View Post
                  no i wont
                  gut and replace internals w.6spd possible?

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                    #10
                    No, tranny is physically shorter.
                    My 2.9L Build!

                    Originally posted by Ernest Hemingway
                    There are only three sports: bullfighting, motor racing, and mountaineering; all the rest are merely games.

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                      #11
                      So then do all of the clutches interchange if you use the corresponding flywheel? Or then are you also going to have to make sure that the flywheel with work with your starter?


                      http://www.cardomain.com/ride/657387

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                        #12
                        I would assume that you would need everything from the flywheel to the tail shaft of the 6-speed stuff since the clutch thickness may be different and need a different sized TO bearing, although you could just put stuff next to each other and measure and check.
                        My 2.9L Build!

                        Originally posted by Ernest Hemingway
                        There are only three sports: bullfighting, motor racing, and mountaineering; all the rest are merely games.

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                          #13
                          Bringing this back from the dead.

                          What are the current options?
                          Drive it hard. Maintain it well.


                          Convertible Technical & Discussion
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                            #14
                            Never really thought about this. Does anyone have any drivability feedback? I would assume since gearing is different your final drive could be much lower/may need to be much lower.

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                              #15
                              the six speed g420 is basically a close ratio 5 speed with an overdrive. the final drive ratio should be based on what ever the person doing the swap's goals are. if you want highway cruising at low rpm, perhaps a 3.46 or 3.23. if you want make it off the line quickly, maybe 4.10 is what you want.
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