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My differential blew up...quite literally

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Old 08-13-2013, 11:04 PM
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Default My differential blew up...quite literally

So I was driving, and when running over a bump in the road, I heard a clunk. I dismissed this as the torsion beam mount with the transmission, as I saw that it was somewhat worn the other day. About a minute later, I hit an indented pothole, and heard another clunking. This time, a slicing/rubbing/grinding sound ensued. I immediately realized that this was my diff f***ing up, but luckily I was less than 1/4 mile from my destination. When I pulled in and got out, I saw a longggggg trail of diff oil, and huge puddle had accumulated very quickly. I looked at the diff from the rear bumper side, and there was a 3-4 inch vertical gash in it on the left side of the housing. So, the diff is completely trashed, and I had to abandon my car for the night. Tomorrow I will be getting it towed to my mechanic. I have to find a "new" used rear end for my car. And I'm completely broke atm. this effin sucks

It's a 2000 z28 M6 with 113k on it. It was the original rear end

[IMG]My differential blew up...quite literally-ohmjzjr.jpg[/IMG]

Last edited by giosoccer20; 08-13-2013 at 11:11 PM.
Old 08-13-2013, 11:19 PM
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Meh...Looks like she has another 100K left in her.
Old 08-13-2013, 11:22 PM
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Originally Posted by TurboJoe@Straightline
Meh...Looks like she has another 100K left in her.
ahaha, funny..... Seriously, though, what could cause something like that?
Old 08-14-2013, 06:29 AM
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some past threads for reference

https://ls1tech.com/forums/gears-axl...ics-added.html

https://ls1tech.com/forums/gears-axl...es-thread.html

https://ls1tech.com/forums/gears-axl...c-failure.html
Old 08-14-2013, 08:21 AM
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okay so my question now is, someone is selling a '99 differential with 3.55 gears. Can I swap out just the differential? I believe the rest of the rear end on my car is good. Plust I just had new rear brakes and pads and rotors put on. axles and suspension and everything seemed good to me. I need a response ASAP because I'm in a dire situation lol

Last edited by giosoccer20; 08-14-2013 at 08:29 AM.
Old 08-14-2013, 01:44 PM
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no such thing as a 3.55 for our 7.5/7.625 10 bolt.
factory gears are 2.73,3.08,3.23,3.42.
aftermarket gears are 3.73,3.90,4.10,4.30,4.56.
Old 08-14-2013, 02:19 PM
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Originally Posted by FirstYrLS1Z
no such thing as a 3.55 for our 7.5/7.625 10 bolt.
factory gears are 2.73,3.08,3.23,3.42.
aftermarket gears are 3.73,3.90,4.10,4.30,4.56.
Yeah they're actually 3.42.
Old 08-14-2013, 03:42 PM
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Yes,you can swap out just the differential,providing nothing else is damaged once you open it up to look. 'lash' should be checked and shimmed if needed.
Old 08-14-2013, 04:45 PM
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Originally Posted by FirstYrLS1Z
Yes,you can swap out just the differential,providing nothing else is damaged once you open it up to look. 'lash' should be checked and shimmed if needed.
I think my mechanic is trying to salvage the current differential. He mentioned something about a spider gear. I have no idea how he's going to pull this off..haha
Old 08-14-2013, 05:12 PM
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Originally Posted by FirstYrLS1Z
Yes,you can swap out just the differential,providing nothing else is damaged once you open it up to look. 'lash' should be checked and shimmed if needed.
[IMG]My differential blew up...quite literally-ln1w92l.jpg[/IMG]

so can you help me identify what kind of differential that is? that's my car with the cover taken off. Is that just the stock torsion diff?

and my mechanic was questioning if the auburn diff of which the link I posted will work in my car since it's different. But I should tell him that it definitely will, without any problems?
Old 08-14-2013, 05:16 PM
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actually here is the link to the auburn diff I found http://allentown.craigslist.org/pts/3921201516.html
Old 08-14-2013, 05:33 PM
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Ouch!!
Old 08-14-2013, 06:41 PM
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you don't need to post such large pictures. As long as the Auburn actually IS a 3 series from a 3.42,it'll work.
Old 08-14-2013, 07:25 PM
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Originally Posted by hardbones
Ouch!!
This^

Gotta love 10bolts though. Lol
Old 08-14-2013, 08:19 PM
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Originally Posted by FirstYrLS1Z
you don't need to post such large pictures. As long as the Auburn actually IS a 3 series from a 3.42,it'll work.
yeah i'm not doing that on purpose. I upload them to imgur and then just copy and paste. anyways, i appreciate all of your input. I'll keep what you said in mind
Old 08-20-2013, 04:11 PM
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okay so I thought I'd update this just in case people were interested. Here's what happened.

One of the bolts of my diff carrier (1 of the 10 bolts), was snapped, and I think every time I went over a bump, it got kicked up into the gears, causing the cover to burst? So now I have the auburn in, and everything is working great. I have pictures of the snapped bolt in the carrier if anyone is interested
Old 08-20-2013, 08:02 PM
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Originally Posted by giosoccer20
okay so I thought I'd update this just in case people were interested. Here's what happened.

One of the bolts of my diff carrier (1 of the 10 bolts), was snapped, and I think every time I went over a bump, it got kicked up into the gears, causing the cover to burst? So now I have the auburn in, and everything is working great. I have pictures of the snapped bolt in the carrier if anyone is interested
Exact same thing happened to my old Datsun 280ZX when it got to 150k miles. It still drove and the cover was intact, but made a bunch of noise!
Old 08-21-2013, 09:37 AM
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Originally Posted by S10xGN
Exact same thing happened to my old Datsun 280ZX when it got to 150k miles. It still drove and the cover was intact, but made a bunch of noise!
damn, that is so weird lol. Mine had 113k miles on it. I wonder if the Torsen diff itself is okay. It never made any failing diff sounds, nor had any symptoms. The p/o was bragging on how huge of burnouts he used to do, so it was probably nearing the end of its life anyways. The auburn I got put in has just 48k on it.



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