m50/g260 question

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  • jeds320i
    Member
    • Sep 2009
    • 54

    #1

    m50/g260 question

    im almost done swapping my m50nv and getrag 260 into my E21.. but ran into a snag. im running an aluminum single mass flywheel. the starter is super tight against the teeth of the flywheel when i try turning it over.. like i loosened it up and put the starter as far up and away from the teeth as possible but its still super tight and like binds.. i cant get the motor to turn over, so then i thought well lets see if the motor turns over at all.. i got a big ol 22mm wrench on the crank and it wont budge.. its been sitting for about a year unfortunatley, but wodd this cause the motor to kinda lock up? how do i get the motor to turn over? wd40 into cylinders? i guess im stumped :/ also wood it matter that my starter is for a g260 with dual mass flywheel? bc my trans that i bought came with the starter and everything but it was a dual mass one. are they slightly different sized or something? any help greatly appreciated!
  • ethrty
    Grease Monkey
    • Nov 2009
    • 342

    #2
    you should run the flywheel/gearbox/flywheel as one set. If you start substituting flywheels and starters you get these problems. Go to an M20 flywheel and use the M20 starter and be done :)

    Comment

    • jeds320i
      Member
      • Sep 2009
      • 54

      #3
      i am using both an m20 flywheel tranny clutch starter etc.. but is there a difference between the size of a single mass and dual mass flywheel? also how do i get my motor to turn, its starting to piss me off

      Comment

      • Wh33lhop
        R3V OG
        • Feb 2009
        • 11705

        #4
        The starter solenoid should not be engaged unless you are attempting to crank the motor over, so if the teeth are engaged when it's just sitting there, something's wrong (you probably need a new starter).
        paint sucks

        Comment

        • jeds320i
          Member
          • Sep 2009
          • 54

          #5
          so here's basically my problem, the starter works properly only engages when i try and start it but is super tight on the teeth of the flywheel. i think i can resolve this issue by adjusting the starter a bit more. but the main problem i have is that the motor wont turn over.. i take a big wrench to the crank and it wont budge. when the motor was out of the car it turned fine by itself as well as the tranny turned fine by itself. but when i put the two together its like theyre locked up... like something in the clutch flywheel is jammed causing everything not to turn. its really getting me frustrated. i just dont see how i couldve screwed up putting on the flywheel and clutch to make it lock up.. any suggestions? im gonna have to pull the motor to fix the problem unfortunatley(it was a big PITA to get that thing into the bay of an E21 trust me) is there anyway that i couldve screwed up puttin on the flywheel or clutch to make it bind or jam in there or something? im puzzled:(

          Comment

          • F34R
            sLaughter
            • May 2009
            • 12385

            #6
            Originally posted by jeds320i
            i am using both an m20 flywheel tranny clutch starter etc.. but is there a difference between the size of a single mass and dual mass flywheel? also how do i get my motor to turn, its starting to piss me off
            The duel mass fly is double the thickness as the single mass. So when you do a flywheel swap from the DM to the SM you HAVE to use a SM pressure plate and disk.
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            Comment

            • Adrian_Visser
              R3VLimited
              • Jun 2006
              • 2823

              #7
              How much did you have shaved off the back of the flywheel? If you don't shave enough material off the back it will hit the ribs on the oil pan.

              Like in this thread:




              If you read Mike30's swap he had problems with I think the PP/ clutch hitting the back of the block on the 24v.

              This is the thread I'm thinking of:



              I suggest doing some searching regarding m20 flywheels used with m20 xmsns and 24v swaps.
              Last edited by Adrian_Visser; 05-09-2010, 11:24 AM.

              '89 Alpine S52 with goodies

              Comment

              • jeds320i
                Member
                • Sep 2009
                • 54

                #8
                im running a aasco single mass aluminum flywheel. i ordered a single mass clutch from bavauto to match it. everything should be fine i dont get wtf is going on. something is jamming up in there or somethin.. :(

                Comment

                • Adrian_Visser
                  R3VLimited
                  • Jun 2006
                  • 2823

                  #9
                  Originally posted by jeds320i
                  im running a aasco single mass aluminum flywheel. i ordered a single mass clutch from bavauto to match it. everything should be fine i dont get wtf is going on. something is jamming up in there or somethin.. :(
                  Did you read the links I provided? You need to shave the back of the flywheel.

                  '89 Alpine S52 with goodies

                  Comment

                  • M-technik-3
                    I waste 90% of my day here and all I got was this stupid title
                    • Oct 2003
                    • 18946

                    #10
                    Exactly like mine, had to have the non friction side. Once that is done the engine turned over fine. I'll post a picture later of where the shaving was OR shave the oil pan.
                    https://www.facebook.com/BentOverRacing

                    Comment

                    • jeds320i
                      Member
                      • Sep 2009
                      • 54

                      #11
                      ah man, i had no idea i had to shave off some material.. when i put it on i dont recall it hittin the block or anything ugh. what exactly do i gotta do?
                      pics?

                      Comment

                      • lennon
                        E30 Fanatic
                        • Jun 2008
                        • 1416

                        #12
                        i cant believe you did an m50 swap and never heard about shaving the flywheel or oilpan. not saying this IS your problem, but an m20 flywheel will rub and needs to be shaved down (on the backside obviously). i have no idea about your flywheel/setup though. just search "shave flywheel" or "flywheel" or "shave"...you get it. you will find tons of info.

                        Comment

                        • ethrty
                          Grease Monkey
                          • Nov 2009
                          • 342

                          #13
                          i was in the same boat. everyone says to use the M20 flywheel, but not once did i hear/read that it needed to be shaved on the back. Lucky a friend told me before the engine was in though after reading my build thread and seeing no mention of me shaving it.

                          Comment

                          • jeds320i
                            Member
                            • Sep 2009
                            • 54

                            #14
                            yea not gonna lie i completely got pwned on this one. i saw no where that said to shave anything etc. i searched and didnt find much.. do i really have to get my aluminum flywheel machined to make it fit? or can i grind away part of the oil pan or whatever?

                            Comment

                            • ethrty
                              Grease Monkey
                              • Nov 2009
                              • 342

                              #15
                              Originally posted by jeds320i
                              yea not gonna lie i completely got pwned on this one. i saw no where that said to shave anything etc. i searched and didnt find much.. do i really have to get my aluminum flywheel machined to make it fit? or can i grind away part of the oil pan or whatever?
                              nope has to be the flywheel. for me it was the block itself that hit as well as the oilpan actually, but that my be the case with M50 idk

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