Replacing Differential Mounting Bushings?
Thread Starter
Racer
Joined: Nov 2005
Posts: 339
Likes: 0
From: San Jose CA
Replacing Differential Mounting Bushings?
I need to replace the differential mounting bushings on my '82 'vette and have a few questions.
Differential Mounting Bushings
1. Is this something that can be done at home with just two jackstands, floor jack, and hand tools?
2. Has anyone replaced theirs at home?
A. How long did it take you to replace the bushings?
3. How much can I expect to pay if a shop did the work?
Thanks in advance.
Differential Mounting Bushings
1. Is this something that can be done at home with just two jackstands, floor jack, and hand tools?
2. Has anyone replaced theirs at home?
A. How long did it take you to replace the bushings?
3. How much can I expect to pay if a shop did the work?
Thanks in advance.
Race Director
Joined: Jan 2005
Posts: 10,641
Likes: 13
From: Slidell Louisiana
I did mine but I have a press. I am sure that you can get the bushings out without a press. When you finally get the bushing out you will need to remove the metal sleeves so that your Poly bushings fit.
Mike
Mike
Race Director
Joined: Feb 1999
Posts: 19,659
Likes: 34
From: Lenoir City Tennessee
Ci 6, 8 & 10 Veteran
St. Jude Donor '05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15
Do this job yourself. This is not a bad job. Should only take about 30 minutes at the most. Back your car up no some ramps and go for it. If your rear diff is clunking when going into drive or reverse, I would think this is the cause for it. Not a bad job at all.
Race Director
Joined: Nov 1999
Posts: 10,643
Likes: 8
From: Foxfield CO 1970 Convertible
Originally Posted by Eddie 70
Do this job yourself. This is not a bad job. Should only take about 30 minutes at the most. Back your car up no some ramps and go for it. If your rear diff is clunking when going into drive or reverse, I would think this is the cause for it. Not a bad job at all.
The worst part might be getting the old one off if the bolts are stuck...
Race Director
Joined: Feb 1999
Posts: 19,659
Likes: 34
From: Lenoir City Tennessee
Ci 6, 8 & 10 Veteran
St. Jude Donor '05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15
No. You should be okay just sliding under the car. You may have to pry down on the front of the diff to get the the bushing out first then to put the new one in.
Le Mans Master
Joined: May 1999
Posts: 6,692
Likes: 29
From: Texas
Let us know how it went.
A few years ago I had mine replace. Also told (by Woodstock) that it was easy. But had a shop do it. But, they said it was far from easy. And, had to disconnect the drive shaft to get enought clearance to get old bushing out.
But, they might not have been familiar with the process.
Or, Woodstock had an ulterior motive.
A few years ago I had mine replace. Also told (by Woodstock) that it was easy. But had a shop do it. But, they said it was far from easy. And, had to disconnect the drive shaft to get enought clearance to get old bushing out.
But, they might not have been familiar with the process.
Or, Woodstock had an ulterior motive.
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Thread Starter
Racer
Joined: Nov 2005
Posts: 339
Likes: 0
From: San Jose CA
My rear differential has the cast in bracket. Looks like I may have to drop the driveshaft. I found another thread that talks about the difference between the 80-82 differential and earlier years.
http://forums.corvetteforum.com/show...l&forum_id=119
http://forums.corvetteforum.com/show...l&forum_id=119
Race Director
Joined: Dec 1999
Posts: 16,945
Likes: 9
driveshaft needs to come out, or at least the u joint seperated from the pinion yoke, then move the driveshaft out of the way (or just pull it out), then the bushing is easy to replace. Are you also replacing the batwing bushings? Those are a PITA, I used a holesaw to remove the rubber, then when all the rubber was out I used a die grinder to grind a "line" inside the bushiung to create a weak spot, then just tapping the side in with a chisel and they come out. Replaced w/ poly bushings. They are 2 part, however the bore on the batwing is only chamfered on one side since GM presses the 1 piece rubber/sleeved bushing in from that side, with the 2 part poly bushings you need to bevel the other side of the batwing to make install easier. Just grease the suckers up and they pop right in.
Thread Starter
Racer
Joined: Nov 2005
Posts: 339
Likes: 0
From: San Jose CA
Originally Posted by Twin_Turbo
driveshaft needs to come out, or at least the u joint seperated from the pinion yoke, then move the driveshaft out of the way (or just pull it out), then the bushing is easy to replace. Are you also replacing the batwing bushings? Those are a PITA, I used a holesaw to remove the rubber, then when all the rubber was out I used a die grinder to grind a "line" inside the bushiung to create a weak spot, then just tapping the side in with a chisel and they come out. Replaced w/ poly bushings. They are 2 part, however the bore on the batwing is only chamfered on one side since GM presses the 1 piece rubber/sleeved bushing in from that side, with the 2 part poly bushings you need to bevel the other side of the batwing to make install easier. Just grease the suckers up and they pop right in.
Race Director
Joined: Dec 1999
Posts: 16,945
Likes: 9
You really can not get a wrench on the pinion bolt under the yoke with the driveshaft in place, the pinion mount shields it off from the diff side and from the other side where the parking brake spring sits you can't get a wrench on either, if you can..plese tell me how because that would make things a lot easier (then again I can access mine from the top now...but still the driveshaft needs to be removed)
Burning Brakes
Joined: Feb 2003
Posts: 1,128
Likes: 4
From: Upland Ca
I just replaced the bushing on my 65 this week end. I did not remove the drive shaft. I did have to pry the diff down a little to remove the old bushing and to angle the bolt out. Took about 30 minutes.
Instructor
Joined: Dec 1999
Posts: 229
Likes: 1
From: Buenos Aires, Argentina
Originally Posted by Van Steel
Driveshaft does not need to come out or be disconnected. It makes it easier but it does not need to be done. You have to angle the bolt it.
Pacha