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> Noises from my rear end...
Steve91T
post Mar 17 2016, 05:02 PM
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Not the kind that make my 2 year old little girl giggle, but clunking from the diff of my stock 10 bolt.

I noticed it after my track day last week. I'll try to get a video of it tonight. If I have the engine off and let the car roll backwards down my driveway, I hear clunking. Probably not supposed to do that, huh? I did get some nasty axle hop a couple of times, I know that's hard on it.

If it's bad, I have a stock axle off my 99 parts car. I just need to swap the brake lines and brakes over. I believe that's the only difference.
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79T/A
post Mar 19 2016, 11:04 PM
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With a clutch LSD, always use non-synthetic. Many already have friction modifier - be sure to read the bottle to confirm. Some have no additive, then you would add the gm friction modifier. The more modifier you add, the less effective the LSD will be. The less friction modifier you use, the noisier the diff will be (more chatter). When I used the POS auburn racers diff, I used standard gear oil with no additive. It made horrible noise, but if you use friction modifier in those things the tiny clutches burn out quickly.

I'm a fan of Torsen style diffs for track use. They last longer before wearing out, but can't be rebuilt like a clutch pack. I kept burning through auburn diffs (cone clutch) and won't go back. Currently using a Detroit truetrac. Not the best, but aftermarket support for these tiny 10 bolts is slim. Don't blame them for not wanting to support these junk axles.
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dailydriver
post Mar 20 2016, 08:51 PM
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QUOTE (79T/A @ Mar 19 2016, 07:04 PM) *
Not the best, but aftermarket support for these tiny 10 bolts is slim. Don't blame them for not wanting to support these junk axles.


Probably why Torsen stopped the production of the T2Rs for our app, along with the axle not being used for ANYTHING anymore. and their case quality/metallurgy issues. (IMG:http://www.frrax.com/rrforum/style_emoticons/default/sad.gif)

They DO make the T2R for the Blue Oval 8.8s though, both for the independent set ups as well as the stick axles.

This post has been edited by dailydriver: Mar 20 2016, 08:53 PM
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Steve91T   Noises from my rear end...   Mar 17 2016, 05:02 PM
Steve91T   Never mind. I forgot I have weld in relocation bra...   Mar 17 2016, 05:51 PM
Steve91T   Quick question. While the car is on the lift, I tr...   Mar 18 2016, 12:29 AM
CrashTestDummy   Are you sure you don't have enough friction mo...   Mar 18 2016, 02:25 AM
Steve91T   QUOTE (CrashTestDummy @ Mar 17 2016, 10:2...   Mar 18 2016, 03:00 AM
Steve91T   I'll pop the cover tomorrow. If the posi is ba...   Mar 18 2016, 03:47 AM
trackbird   What year rear end is it? The LT1 cars had clutch ...   Mar 18 2016, 11:51 AM
Steve91T   I think this is it. It's an LT1 rear and...   Mar 18 2016, 12:17 PM
Steve91T   Ok I've been reading. The torsen out of my 99 ...   Mar 18 2016, 01:15 PM
trackbird   A good clutch type LSD is always better than a Tor...   Mar 18 2016, 04:19 PM
Steve91T   Really? Everything I read said torsion is better f...   Mar 18 2016, 04:50 PM
dailydriver   QUOTE (Steve91T @ Mar 18 2016, 12:50 PM) ...   Mar 18 2016, 07:28 PM
SuperMacGuy   The thing with Torsen is that they essentially wor...   Mar 18 2016, 04:53 PM
Steve91T   Yep I think these are bad noises. http://youtu....   Mar 18 2016, 06:23 PM
Steve91T   I pulled the cover off. I was fully expecting part...   Mar 18 2016, 09:22 PM
Blainefab   Looks fine but if the clutch packs are shot that w...   Mar 18 2016, 09:29 PM
Steve91T   Well it's dead silent when rolling straight. ...   Mar 18 2016, 10:32 PM
Steve91T   U joints look good and there's no play that I ...   Mar 19 2016, 02:24 AM
slowTA   The noise you're making in the second video is...   Mar 19 2016, 02:56 AM
Steve91T   QUOTE (slowTA @ Mar 18 2016, 10:56 PM) Th...   Mar 19 2016, 03:27 AM
Steve91T   I think I misunderstood what you were saying. Me...   Mar 19 2016, 04:42 AM
Steve91T   Someone one ls1texh said synthetic gear oil with t...   Mar 19 2016, 01:01 PM
Steve91T   Ok so I picked up some friction modifier from GM a...   Mar 19 2016, 03:53 PM
Steve91T   The guys on ls1tech say I need to use regular gear...   Mar 19 2016, 04:51 PM
79T/A   With a clutch LSD, always use non-synthetic. Many ...   Mar 19 2016, 11:04 PM
dailydriver   QUOTE (79T/A @ Mar 19 2016, 07:04 PM) Not...   Mar 20 2016, 08:51 PM
Steve91T   Oh I couldn't care less how much noise it make...   Mar 20 2016, 12:36 AM
Steve91T   I've been searching the web for way too long n...   Mar 20 2016, 03:48 PM
ReEntryRacer   QUOTE (Steve91T @ Mar 20 2016, 08:48 AM) ...   Mar 22 2016, 02:45 AM
Steve91T   Update: I filled the diff with Lucas regular 80w90...   Mar 23 2016, 02:29 PM
CrashTestDummy   Yep, a lot of the synthetic stuff is, well, pretty...   Mar 23 2016, 02:57 PM

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