Announcement

Collapse
No announcement yet.

Drive shaft/ diff question

Collapse
X
Collapse
 
  • Page of 2
  • Filter
  • Time
  • Show
Clear All
new posts
Previous 1 2 template Next
    #16
    Pic

    1976 2002, 1987 325is, s50 1991 touring, 1996 328i vert

    Comment

      #17
      Do BMW diffs not have a crush sleeve used to set pinion backlash? If they do have one, if you pull the flange off, you need a new crush sleeve and will have to dial in the backlash again. It's not just a torque amount. You need to physically measure it with a dial indicator on the ring gear.

      Comment

        #18
        Pic of current flange. It appears to be a 6 bolt, but from the wear pattern looks like a 4 bolt driveshaft had been bolted up for some time??



        Originally posted by NitroRustlerDriver View Post
        Do BMW diffs not have a crush sleeve used to set pinion backlash? If they do have one, if you pull the flange off, you need a new crush sleeve and will have to dial in the backlash again. It's not just a torque amount. You need to physically measure it with a dial indicator on the ring gear.
        Good question. Anyone know? If so what backlash is used?
        1976 2002, 1987 325is, s50 1991 touring, 1996 328i vert

        Comment

          #19
          The pinion gear uses a crush sleeve to establish bearing preload. Pinion depth is set with a shim behind the pinion gear bearing race.

          You do not need to dial in the backlash again. You merely need to get very close with the bearing preload (do it by feel or with a torque wrench). Remember you're dealing with worn-in bearings, so you SHOULD NOT use the drag torque spec for new bearings.

          Originally posted by whysimon
          WTF is hello Kitty (I'm 28 with no kids and I don't have cable)

          Comment

            #20
            Originally posted by nl328i View Post
            Pic of current flange. It appears to be a 6 bolt, but from the wear pattern looks like a 4 bolt driveshaft had been bolted up for some time??

            You have a 4 bolt differential from Z3 3.0 5 speed manual with Torsen LSD. M54b30

            the 6 bolt bell flange has much smaller bolt holes with a evenly spaced pattern
            OBD1 M54/M52TU swap as a M50b25

            Z4 non powered steering rack fits e30



            Euro e46 2005/6 320d 6mt gearbox into E30 with M20 hardy and beck 1985 327s engine

            Comment

              #21
              Understood. I appreciate all this great info. I shall acquire a 4 bolt drive shaft and there will be much rejoicing.
              1976 2002, 1987 325is, s50 1991 touring, 1996 328i vert

              Comment

                #22
                Finally going to make the move from a open e30 3.91 diff to the z3 3.07 torsen LSD as discussed!

                I bought a 4 bolt e36 drive shaft and for fun a brand new e36 Guibo.
                So. In the next few days I will be bolting up the e36 shaft to the zf tranny and the 4 bolt z3 diff. As far as I can tell the only "mod" needed will be the e30 csb on the e36 shaft! Woot!
                1976 2002, 1987 325is, s50 1991 touring, 1996 328i vert

                Comment

                Previous 1 2 template Next
                Working...
                X