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-   -   Got cracked diff bushing...what else to do while there? (http://forum.e46fanatics.com/showthread.php?t=967167)

heechkass 01-23-2013 12:05 AM

Got cracked diff bushing...what else to do while there?
 
Discovered that I have cracked differential bushing. Wondering what else to change while I have it apart.

BMWCaptain 01-23-2013 12:13 AM

The rear lower control ARM brushing.

heechkass 01-23-2013 12:23 AM

Flex disc?

BMWCaptain 01-23-2013 12:33 AM

Quote:

Originally Posted by heechkass (Post 15087172)
Flex disc?

Not unless it is bad. Would require removal of exhaust, drive shaft and heat shields.

heechkass 01-23-2013 12:43 AM

By the way, I have 155000 miles on this...to provide context

tock172 01-23-2013 12:48 AM

Csb.

Ballistic325 01-23-2013 05:20 AM

Drop in a LSD :eeps:

Seriously though, changing rear end bushings will pay off... check other stuff like sway links. If you can manage to do RTABs it would serve you well.

Good luck

Sent from my V9 using Bimmer App

heechkass 01-23-2013 08:21 AM

I'll probably focus on bushings this round and leave csb and flex disc for another time.

Stinger9 01-23-2013 09:44 AM

History of diff seals?
Lots fail at much lower mileage. Cheap when you have the axles removed.

Kubica 01-23-2013 11:11 AM

Quote:

Originally Posted by Stinger9 (Post 15087950)
History of diff seals?
Lots fail at much lower mileage. Cheap when you have the axles removed.

Diff seals is a good one.

Quote:

Originally Posted by BMWCaptain (Post 15087147)
The rear lower control ARM brushing.

Upgrade to the M3 ball joint instead of another bushing here.

Stinger9 01-23-2013 11:57 AM

Quote:

Originally Posted by Kubica (Post 15088217)
Diff seals is a good one.

I know, mine went out at less than 90K miles.



Upgrade to the M3 ball joint instead of another bushing here.

What does that substitution look like?

heechkass 01-23-2013 09:22 PM

Quote:

Originally Posted by Stinger9 (Post 15087950)
History of diff seals?
Lots fail at much lower mileage. Cheap when you have the axles removed.

Less extreme temps here...

heechkass 01-23-2013 09:23 PM

^no salting in winter time.
My guess

Stinger9 01-23-2013 10:18 PM

My car gets driven only in summer.
Has never seen a salted road.
I'm in LA every summer.

teamdfl 01-25-2013 09:27 AM

Quote:

Originally Posted by heechkass (Post 15087128)
Discovered that I have cracked differential bushing. Wondering what else to change while I have it apart.

Replace every piece of suspension rubber under the car:
Diff bushings
rear subframe mounts
rear trailing arm bushings
upper and lower control arm bushings

heechkass 02-02-2013 05:09 PM

Quote:

Originally Posted by teamdfl (Post 15094814)
Replace every piece of suspension rubber under the car:
Diff bushings
rear subframe mounts
rear trailing arm bushings
upper and lower control arm bushings

Sound advise. Is it easier to drop the exhaust and the whole rear axle to get all this done? Or is there a easier or better way to do this?
By the way, I was going through the list of all bushings to order and got stumped by a pair on realoem without a part number. I posted a separate tag to see if anyone can help identify it.

Stinger9 02-02-2013 05:17 PM

Are you sure it is for your car on realoem? If there is no part number, good chance it isn't for your car.

Yes, big nasty job to drop the rear and exhaust.

What is an upper control arm?

heechkass 02-02-2013 11:03 PM

Thanks stinger. Your post made me go back into realoem...and found the note that explained why the part wasn't listed.
Notes:
Items pictured but not listed are not installed on your vehicle.
Items pictured without a number are listed on another diagram.


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