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Possible Input shaft spigot Bearing issue

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    #1

    Possible Input shaft spigot Bearing issue

    Has anyone that's done the swap run into the problem of the gearbox input shaft on the getrag260 from my e30 not mateing into the m50 spigot bearing on the end of the crank. I'm not sure if my is sitting in there nicley as I have a funny rattle on start up and shut off and here it rattling a bit at idle. Hard to diagnose as my transmission is actually sitting on the tunnel a bit. mite be that.....

    Doesn't seem to get any worse ( has made this noise from day 1 ) keeping in mind that my car's only being running a couple of days since getting the swap complete. and I've being driving it nicely as I have a new clutch to wear in.
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    #2
    I know the OD of the bearing is the same. And I'd have to assume the inside is the same as well ( I really don't know). That bearing would have to be in serious bad shape to actually be "rattling".
    It could be the throwout bearing. Did they use a new one for the install??
    Your signature picture has been removed since it contained the Photobucket "upgrade your account" image.

    "I cannot undertake to lay my finger on that article of the Constitution which granted a right to Congress of expending, on objects of benevolence, the money of their constituents. Charity is no part of the legislative duty of the [federal] government." ~ James Madison

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      #3
      What flywheel,clutch,pressure plate combination did you use?

      Did you lighten the flywheel?

      Here is 1 lead, my pal's m50/g260 swap rattles when the a/c is on and when it is warmed up, he is currently using redline MTL. The flywheel is the early 320i that had to be shaved 6mm off.

      gonna change to redline 75W140NS and see if the noise quiets down abit
      mech used a probe that detected vibration from the gearbox, but the noise goes away when the clutch is depressed

      i think the there could be a possibility of the flywheel bearing not installed proper, or mising, as engines with autobox didn't have this bearing

      another possibility would be the pilot bearing as per Joshh, and if it was matched with the proper clutch/pressure plate setup

      Comment

        #4
        Originally posted by tjhartge View Post

        i think the there could be a possibility of the flywheel bearing not installed proper, or mising, as engines with autobox didn't have this bearing

        I was going to say that but I wasn't sure if the one on my old auto I had just fell off and I didn't notice. :up: Thanks for verifying that.
        Your signature picture has been removed since it contained the Photobucket "upgrade your account" image.

        "I cannot undertake to lay my finger on that article of the Constitution which granted a right to Congress of expending, on objects of benevolence, the money of their constituents. Charity is no part of the legislative duty of the [federal] government." ~ James Madison

        ‎"If you've got a business, you didn't build that. Somebody else made that happen" Barack Obama

        Comment

          #5
          Originally posted by joshh View Post
          I know the OD of the bearing is the same. And I'd have to assume the inside is the same as well ( I really don't know). That bearing would have to be in serious bad shape to actually be "rattling".
          It could be the throwout bearing. Did they use a new one for the install??
          Yeah I put a new throwout ( we call them realese bearings down here ) bearing on.

          Comment

            #6
            Originally posted by tjhartge View Post
            What flywheel,clutch,pressure plate combination did you use?

            Did you lighten the flywheel?

            Here is 1 lead, my pal's m50/g260 swap rattles when the a/c is on and when it is warmed up, he is currently using redline MTL. The flywheel is the early 320i that had to be shaved 6mm off.

            gonna change to redline 75W140NS and see if the noise quiets down abit
            mech used a probe that detected vibration from the gearbox, but the noise goes away when the clutch is depressed

            i think the there could be a possibility of the flywheel bearing not installed proper, or mising, as engines with autobox didn't have this bearing

            another possibility would be the pilot bearing as per Joshh, and if it was matched with the proper clutch/pressure plate setup
            I had the flywheel machined
            Flywheel and clutch starter is my original 89 320i 5spd one's.
            As you metioned the noise goes away when the clutch is depressed
            I'm not sure if the flywheel is installed properly as I did it (newbie) and I had to shave the m50 oil pan with a grinder so my flywheel didn't rub.
            The motor is out of a auto e34 but I didn't put a new spigot (pilot) bearing on the in there and checked if the new bearing fitted on the gearbox shaft then had to tap it in with a soft hammer

            maybe it's the whole e30 gearbox, flywheel, clutch, starter but m50 spigot (pilot) bearing......

            Comment

              #7
              Mine has the same rattle. I have 93m50tu and 260. It only makes the noise when the car warms up and not when the clutch is in.

              It is the main shaft bearing inside the tranny. It is a common noise. I don't know why it makes that noise, but my mechanic buddy says his stock 325is has made the same noise for a while with no problems.

              "It's like a koala bear crapped a rainbow in my brain."
              R.I.P. Harry Goz aka. Captain Murphy
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              Comment

                #8
                You should have used the later gearbox

                No rattles or whines from mine;)

                Comment

                  #9
                  Sorry to bump a old thread, but which pilot bearing did you guys use in your M50's with a G260? The G260 has a 12mm input shaft while the G220/ZF has a 15mm shaft. So, the pilot bearing that is made for the M50 with a G220 or ZF tranny is 15mm, and I would expect causes your rattles.

                  From what I have researched on RealOEM, 84/85e's, as well as 89 325i's all used the same pilot bearing, and all of the G260's from those years have the same size input shaft.
                  :wgaf:

                  PNW BMW Crew ///
                  '93 325iS
                  '99 528iT

                  Comment

                    #10
                    The e30 325i pilot bearing fits the M50 crankshaft. Same OD, different ID.

                    Comment

                      #11
                      Correct.

                      Bearing to use with an e30 G260 transmission, 32mm OD/12mm ID - 11 21 1 709 681
                      Bearing to use with an e36 G220/ZF transmission, 32mm OD/15mm ID - 11 21 1 720 310

                      So to make it concise for anyone searching in the future, with a M50 with an e30 transmission, use the e30 pilot bearing. With an e36 transmission, use the e36 pilot bearing. Both crankshafts have the same size bearing hole.
                      :wgaf:

                      PNW BMW Crew ///
                      '93 325iS
                      '99 528iT

                      Comment

                        #12
                        haha so that funny noise I had was from 3mm of play in my pilot bearing as I used the m50 pilot bearing on a e30 transmisson. hahaha seems to be holding up fine and I'd being thrashing the shit outta it

                        Comment

                          #13
                          Mine started making that noise after about 50 miles or so. E36 tranny with e36 pilot. Same symptoms, tranny rattle after warm up, goes away with clutch pressed. I thought it might have something to do with my selector rod being bent and still not clearing the vibration damper in 2nd,R, and 5th.
                          Originally posted by 325Projectz
                          don't listen to the diagram... listen to mr. swiss.
                          :nice:

                          Comment

                            #14
                            Originally posted by Mr.SWISS View Post
                            Mine started making that noise after about 50 miles or so. E36 tranny with e36 pilot. Same symptoms, tranny rattle after warm up, goes away with clutch pressed. I thought it might have something to do with my selector rod being bent and still not clearing the vibration damper in 2nd,R, and 5th.
                            That is the throwout bearing, not the pilot bearing.
                            :wgaf:

                            PNW BMW Crew ///
                            '93 325iS
                            '99 528iT

                            Comment

                              #15
                              Originally posted by SiGmA_X View Post
                              That is the throwout bearing, not the pilot bearing.
                              I'm talking about the one in the engine the input shaft slides in. I know the difference, I put the clutch in. From waht I have found is the reason is the reduced weight of the fly wheel allows this after the bearing expands from the heat thus the input shaft rattles around a bit.
                              Originally posted by 325Projectz
                              don't listen to the diagram... listen to mr. swiss.
                              :nice:

                              Comment

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