Announcement

Collapse
No announcement yet.

Front driveshaft install question

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

    Front driveshaft install question

    Hey Guys,

    Me again....

    Trying to get my front driveshaft back in. Having trouble with the 3 bolts that bolt into the output flange of the front diff. The bolts without the locking nuts.

    They won't tighten for some reason. They get started, tighten up a little, then loosen right up again, liked they are stripped or something. What am I doing wrong?

    Thanks!

    Andy
    89 325ix coupe Diamondschwartz
    1994 Mazda Miata

    #2
    Unfortunately it sounds like they are stripped. What do the threads look like?
    Build thread

    Bimmerlabs

    Comment


      #3
      I have to take it apart to check. The bolts look fine and they were tight when I took them out (if I remember correctly, it's been awhile).

      If the threads are stipped can they be tapped and rethreaded?
      89 325ix coupe Diamondschwartz
      1994 Mazda Miata

      Comment


        #4
        Wouldn't it be odd for all 3 of the holes to be stripped? Could the driveshaft be too deep in the transfer case and the bolts just aren't catching enough of the threads on the output flange?
        89 325ix coupe Diamondschwartz
        1994 Mazda Miata

        Comment


          #5
          Looks like user error guys! Installed the centering pin wrong, duh!

          Another question....

          So, after looking at realoem, I dont seem to have the "ring cover", #15 in the diagram



          How important is that part?
          89 325ix coupe Diamondschwartz
          1994 Mazda Miata

          Comment


            #6
            it's just a bushing, I don't think it's super critical.
            Build thread

            Bimmerlabs

            Comment


              #7
              Thanks Nando! You are a big help, appreciate the quick response!
              89 325ix coupe Diamondschwartz
              1994 Mazda Miata

              Comment


                #8
                That bushing makes the drive shaft sit in center so i would highly recommend using one! You could get vibrations.
                E30 325ix M50 turbo 7 spd DCT 4wd 840awhp @ 31 psi.
                E30 M50 6 spd 764whp @ 24psi.
                E30 M20 6 spd 675whp.

                Comment


                  #9
                  I thought that was part of the front input flange - I thought there was sort of rubber "washer" that is pictured in the ETK.
                  Build thread

                  Bimmerlabs

                  Comment


                    #10
                    I could be wrong, but it really looks like the centering piece :)
                    E30 325ix M50 turbo 7 spd DCT 4wd 840awhp @ 31 psi.
                    E30 M50 6 spd 764whp @ 24psi.
                    E30 M20 6 spd 675whp.

                    Comment


                      #11
                      It was actually still there. Its just a flimsy piece of rubber, appears to be a bushing, doesnt look very important.
                      89 325ix coupe Diamondschwartz
                      1994 Mazda Miata

                      Comment


                        #12
                        yeah, I'm pretty sure there's a washer/bushing thing, and then there's the actual centering piece in the diff flange. I think that part is replaceable too, but they aren't the same thing. you could probably put any kind of rubber washer/o-ring in it's place and it would work just fine.
                        Build thread

                        Bimmerlabs

                        Comment


                          #13
                          So what does the rubber washer even do? :)
                          E30 325ix M50 turbo 7 spd DCT 4wd 840awhp @ 31 psi.
                          E30 M50 6 spd 764whp @ 24psi.
                          E30 M20 6 spd 675whp.

                          Comment


                            #14
                            Prevents metal on metal? I dont think its extremely important - you cant compress the shaft into the flange any further than the flex disc allows anyway.
                            Build thread

                            Bimmerlabs

                            Comment

                            Working...
                            X