Has Anyone Replaced Differential Bushings?

3002 tii · 09-05-2015, 01:40 PM

Referring to parts 7 and 9 below. Is this a DIY or major PITA and better left for an indy shop?

GuidoK · 09-05-2015, 02:26 PM

I replaced it twice....

The first time (the original bushing) was less stuck than I had expected.

But I had the rear axle off the car. But if you use the factory tool, that shouldn't make a difference. If you use generic press/pullers space might be an issue.

I thought it was a diy job, but I think everything is a diy job.

But imho you need a carlift and a transmission jack as the diff has to come out (although I know people who swap z4 diffs on their port without a lift, just on jackstands or so....)

3002 tii · 09-05-2015, 02:42 PM

Quote:

Originally Posted by GuidoK

I replaced it twice....

The first time (the original bushing) was less stuck than I had expected.

But I had the rear axle off the car. But if you use the factory tool, that shouldn't make a difference. If you use generic press/pullers space might be an issue.

I thought it was a diy job, but I think everything is a diy job.

But imho you need a carlift and a transmission jack as the diff has to come out (although I know people who swap z4 diffs on their port without a lift, just on jackstands or so....)

Assuming the diff is already coming out, his many hours would your budget for just the bushings? Subframe does not need to be dropped, correct?

GuidoK · 09-05-2015, 04:38 PM

If you have the bmw tool (that allows you to remove it without dropping the subframe), removing and installing the bushing is 15min work or so when the diff is already out.

You place the press tool, and start winding the nut on the threaded bolt of the tool.

Vanne · 09-06-2015, 12:15 PM

My indi dropped the whole sub frame, I had all bushes replaced.. did it while the whole car was apart.. :-D

Only way to be sure, take off and nuke the place frome orbit.

pokeybritches · 09-06-2015, 01:11 PM

Quote:

Originally Posted by 3002 tii

Assuming the diff is already coming out, his many hours would your budget for just the bushings? Subframe does not need to be dropped, correct?

Does this mean you're buying that 30/90 3.91 before I have the chance to snatch it up??

3002 tii · 09-06-2015, 01:28 PM

Quote:

Originally Posted by pokeybritches

Does this mean you're buying that 30/90 3.91 before I have the chance to snatch it up??

Negative, the 3.91 is all yours

09-05-2015, 01:40 PM	#1
3002 tii Lieutenant General 2282 Rep 12,565 Posts Drives: Z4 M, X5, GX460 Join Date: Apr 2008 Location: CT iTrader: (99) Garage List F15 X5 xDrive35i [8.75] E86 Z4 M [10.00] F10 550i (Retired) [9.17] F25 X3 xDrive35i (R ... [9.43] E82 135is (Retired) [9.50] E85 Z4 M (Retired) [9.41] E90 328i xDrive (Re ... [9.25] E86 Z4 3.0si (Retired) [9.22]	Has Anyone Replaced Differential Bushings? Referring to parts 7 and 9 below. Is this a DIY or major PITA and better left for an indy shop? Attached Images __________________ Follow for latest mods
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09-05-2015, 02:26 PM	#2
GuidoK #buildnotbought 10838 Rep 4,891 Posts Drives: Z4 3.0i ESS TS2+ Join Date: Jul 2012 Location: Tinkering in the garage iTrader: (0)	I replaced it twice.... The first time (the original bushing) was less stuck than I had expected. But I had the rear axle off the car. But if you use the factory tool, that shouldn't make a difference. If you use generic press/pullers space might be an issue. I thought it was a diy job, but I think everything is a diy job. But imho you need a carlift and a transmission jack as the diff has to come out (although I know people who swap z4 diffs on their port without a lift, just on jackstands or so....) __________________ Z4 3.0i \| ESS TS2+ supercharger \| Quaife ATB LSD \| Brembo/BMW performance BBK front/rear \| Schrick FI cams \| Schmiedmann headers+cats \| Powerflex/strongflex PU bushings \| Vibra-technics engine mounts \| H&R anti rollbars \| KW V3 coilovers/KW camber plates \| Sachs race engineering clutch \| tons of custom sh#t
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09-05-2015, 04:38 PM	#4
GuidoK #buildnotbought 10838 Rep 4,891 Posts Drives: Z4 3.0i ESS TS2+ Join Date: Jul 2012 Location: Tinkering in the garage iTrader: (0)	If you have the bmw tool (that allows you to remove it without dropping the subframe), removing and installing the bushing is 15min work or so when the diff is already out. You place the press tool, and start winding the nut on the threaded bolt of the tool. __________________ Z4 3.0i \| ESS TS2+ supercharger \| Quaife ATB LSD \| Brembo/BMW performance BBK front/rear \| Schrick FI cams \| Schmiedmann headers+cats \| Powerflex/strongflex PU bushings \| Vibra-technics engine mounts \| H&R anti rollbars \| KW V3 coilovers/KW camber plates \| Sachs race engineering clutch \| tons of custom sh#t Last edited by GuidoK; 09-05-2015 at 04:44 PM..
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09-06-2015, 12:15 PM	#5
Vanne Down Under!! 1621 Rep 4,294 Posts Drives: 2007 Z4MC Join Date: Mar 2013 Location: Dubai iTrader: (4)	My indi dropped the whole sub frame, I had all bushes replaced.. did it while the whole car was apart.. :-D Only way to be sure, take off and nuke the place frome orbit.
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