Got cracked diff bushing...what else to do while there?

heechkass · 01-23-2013, 12:05 AM

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

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

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

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

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

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

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

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

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.

01-23-2013, 12:05 AM	#1
heechkass Registered User Join Date: Aug 2007 Location: california Posts: 127 My Ride: 323i Touring, 2000 View My Garage	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.

01-23-2013, 12:48 AM	#6
tock172 100% star stuff Join Date: Jan 2011 Location: San Diego Posts: 2,431 My Ride: 2004 330i View My Garage	Csb. __________________ Bilstein/Eibach B12 Pro-Plus Suspension System \| DICE Mediabridge \| Valentine One

01-23-2013, 05:20 AM	#7
Ballistic325 Registered User Join Date: May 2009 Location: Sydney Posts: 2,091 My Ride: slow and steady View My Garage	Drop in a LSD 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 __________________ I can help with * Reading Codes / Coding your car * R&R FCAs, Tie Rods, Sway links.... * RTABs Need an RTAB tool? Or clutch fan and water pump tools? PM me. Last edited by Ballistic325; 01-23-2013 at 05:23 AM.

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01-23-2013, 12:13 AM	#2
BMWCaptain Registered User Join Date: Sep 2011 Location: TEXAS - 25X,XXX PLUS MILES CLUB MEMBER Posts: 1,225 My Ride: 03 325iT Sport Wagon View My Garage	The rear lower control ARM brushing.

01-23-2013, 12:23 AM	#3
heechkass Registered User Join Date: Aug 2007 Location: california Posts: 127 My Ride: 323i Touring, 2000 View My Garage	Flex disc?

01-23-2013, 12:43 AM	#5
heechkass Registered User Join Date: Aug 2007 Location: california Posts: 127 My Ride: 323i Touring, 2000 View My Garage	By the way, I have 155000 miles on this...to provide context

01-23-2013, 08:21 AM	#8
heechkass Registered User Join Date: Aug 2007 Location: california Posts: 127 My Ride: 323i Touring, 2000 View My Garage	I'll probably focus on bushings this round and leave csb and flex disc for another time.

01-23-2013, 09:44 AM	#9
Stinger9 Registered User Join Date: Sep 2011 Location: New York Posts: 5,558 My Ride: '04 330Ci View My Garage	History of diff seals? Lots fail at much lower mileage. Cheap when you have the axles removed.

01-23-2013, 09:23 PM	#13
heechkass Registered User Join Date: Aug 2007 Location: california Posts: 127 My Ride: 323i Touring, 2000 View My Garage	^no salting in winter time. My guess

01-23-2013, 10:18 PM	#14
Stinger9 Registered User Join Date: Sep 2011 Location: New York Posts: 5,558 My Ride: '04 330Ci View My Garage	My car gets driven only in summer. Has never seen a salted road. I'm in LA every summer.

02-02-2013, 05:17 PM	#17
Stinger9 Registered User Join Date: Sep 2011 Location: New York Posts: 5,558 My Ride: '04 330Ci View My Garage	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?

02-02-2013, 11:03 PM	#18
heechkass Registered User Join Date: Aug 2007 Location: california Posts: 127 My Ride: 323i Touring, 2000 View My Garage	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.