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Old Mar 26, 2009 | 01:17 PM
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Default That popping feeling...

Well my car is at around 130k miles now and the rear end is starting to pop when going around corners. I'm thinking it's the posi unit taking a dump. What are my options? Is it better to have it rebuilt or should I just swap out the whole rear end for a used lower mileage 3.42 posi 3 channel rear? I am also entertaining the idea of buying that 4.11 rear end for sale up north, but I am really short on cash now.
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Old Mar 26, 2009 | 01:18 PM
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Originally Posted by ZexGX
Well my car is at around 130k miles now and the rear end is starting to pop when going around corners. I'm thinking it's the posi unit taking a dump. What are my options? Is it better to have it rebuilt or should I just swap out the whole rear end for a used lower mileage 3.42 posi 3 channel rear?
Swap it, it will only take an hour to do........
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Old Mar 26, 2009 | 01:21 PM
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Originally Posted by LS1Adam84
Swap it, it will only take an hour to do........
It only takes 30 minutes with air tools!
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Old Mar 26, 2009 | 01:57 PM
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swapping a used rear end is cheaper but then your taking a chance unless you know the person selling it to you, but if you do put gears I would put 3.73, just my .02
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Old Mar 26, 2009 | 03:02 PM
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4.11's are pretty steep for an auto car

Especially in a v6 car. No offense but the slight lil gain in performance your gonna get is not gonna be worth the decrease in gas mileage and the SCREAMING v6 at highway cruising speeds lol. These factors wouldn't be worth it to me because at the end of the day the car is still going to be, well, slow.
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Old Mar 26, 2009 | 03:11 PM
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Swap it. Give me a call if you need help.
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Old Mar 26, 2009 | 04:52 PM
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Yeah Lee only 30 minutes man... hahahaha, well at least now we know exactly what we are doing, I guess thats good. I would say check the fs threads or hit up socal performance, they have some low mile rear ends for around $300 ish.
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Old Mar 26, 2009 | 05:28 PM
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lol, put a moser 9'' in that bitch,
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Old Mar 26, 2009 | 05:38 PM
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Originally Posted by camarojunky74
lol, put a moser 9'' in that bitch,
Then Lee you should put an LS1 in your car and either a T-56 or 4L60.
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Old Mar 26, 2009 | 08:46 PM
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Originally Posted by MSS91Z28
4.11's are pretty steep for an auto car

Especially in a v6 car. No offense but the slight lil gain in performance your gonna get is not gonna be worth the decrease in gas mileage and the SCREAMING v6 at highway cruising speeds lol. These factors wouldn't be worth it to me because at the end of the day the car is still going to be, well, slow.
4.11's are pretty damn good for V6's from what I hear even on A4s. It would just mean the end of road trips in this car. Most of the V6 guys who go 3.73 say they wish they got 4.11s... If I want to go FI/nitrous then 3.42 is still acceptable...
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Old Mar 26, 2009 | 10:25 PM
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sounds like it just needs a fluid change with some quality limited slip additive.
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Old Mar 26, 2009 | 11:02 PM
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Originally Posted by noriceinside
sounds like it just needs a fluid change with some quality limited slip additive.
I changed the fluid less than 10k miles ago with 85-140 and limited slip additive.
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Old Mar 26, 2009 | 11:17 PM
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its probably ur pinion gears, u should pull it apart and check we can do that in about 10 minutes
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Old Mar 26, 2009 | 11:21 PM
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Originally Posted by SSMOKIN_Y2KSS
its probably ur pinion gears, u should pull it apart and check
How can I tell by just looking at it? Huge chunks missing?? I have a spare replacement 3.42 ring and pinion (who would have thought?? ) in good shape. I thought usually the torsen units go out, especially when it pops when going around corners. I also noticed after going to the drag strips that there was a lot more burned rubber on the right side of the car than on the left. Almost nothing on the left but a lot on the right.
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Old Mar 26, 2009 | 11:30 PM
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Originally Posted by ZexGX
How can I tell by just looking at it? Huge chunks missing?? I have a spare replacement 3.42 ring and pinion (who would have thought?? ) in good shape. I thought usually the torsen units go out, especially when it pops when going around corners. I also noticed after going to the drag strips that there was a lot more burned rubber on the right side of the car than on the left. Almost nothing on the left but a lot on the right.
torsen? 10 bolts dont have tosens i dont think they have spider gears or diff. pinion gears they look like this

http://cgi.ebay.com/ebaymotors/NEW-G...ayphotohosting

Last edited by SSMOKIN_Y2KSS; Mar 27, 2009 at 01:26 AM.
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Old Mar 27, 2009 | 12:50 AM
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The 10 bolt has a torsen carrier, and yes it is when the gears inside are bad it pops, remember that's exactly what was happening on my car, then rear end went completely and we spent 8 hours in the drive way installing the rear end, sorry new gear oil isn't going to fix it, your cover may end up looking like mine did lee. This is exactly what happened with mine so I say replace now and be done with it.
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Old Mar 27, 2009 | 01:22 AM
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Originally Posted by LS1Adam84
The 10 bolt has a torsen carrier, and yes it is when the gears inside are bad it pops, remember that's exactly what was happening on my car, then rear end went completely and we spent 8 hours in the drive way installing the rear end, sorry new gear oil isn't going to fix it, your cover may end up looking like mine did lee. This is exactly what happened with mine so I say replace now and be done with it.
my bad 7.5 not 8.5 yah i didnt kno the v6 had a torsen in that case change the carrier.shows u how much i cared about the 10 bolt..i tossed that in the trash without ever even attempting to open it..and as long as the ring and pinion u have are a pair from the manufacturer u can change that aswell..but u cant mix match ring and pinions even if they are the same ratios. and you probably have a 2 series carrier right now and the 3.42's wont fit unless u get a 3 series

Last edited by SSMOKIN_Y2KSS; Mar 27, 2009 at 01:32 AM.
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Old Mar 27, 2009 | 02:15 PM
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Originally Posted by SSMOKIN_Y2KSS
my bad 7.5 not 8.5 yah i didnt kno the v6 had a torsen in that case change the carrier.shows u how much i cared about the 10 bolt..i tossed that in the trash without ever even attempting to open it..and as long as the ring and pinion u have are a pair from the manufacturer u can change that aswell..but u cant mix match ring and pinions even if they are the same ratios. and you probably have a 2 series carrier right now and the 3.42's wont fit unless u get a 3 series
I have an ABS non-TCS rear with a Zexel-Torsen positraction unit and 3.42 gears - and it came like that from the factory way up in Canada (eh?). It is the exact same as what would come in a 6 speed car... RPO codes GU6/G80. It was included with the Y87 option package.

So back to my question... Rebuild, or swap in a used one? I don't know anything about rebuilding rear ends other than swapping axles and backing plates.. If I should go rebuild, how much is that going to cost me and how the heck can I do it??
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Old Mar 27, 2009 | 02:20 PM
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did anyone mention an ls1 swap yet?!


but seriously, just buy a used rear end they seem to be pretty cheap.
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Old Mar 27, 2009 | 10:19 PM
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Originally Posted by ZexGX
I have an ABS non-TCS rear with a Zexel-Torsen positraction unit and 3.42 gears - and it came like that from the factory way up in Canada (eh?). It is the exact same as what would come in a 6 speed car... RPO codes GU6/G80. It was included with the Y87 option package.

So back to my question... Rebuild, or swap in a used one? I don't know anything about rebuilding rear ends other than swapping axles and backing plates.. If I should go rebuild, how much is that going to cost me and how the heck can I do it??
unless u have an extra carrier laying around to mount up go with a new axle. tosen rears are a pita to rebuild and expensive
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