 Did I kill my posi unit?, Its whining and popping..... |
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 Apr 5 2011, 02:57 PM
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#1
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Experienced Member  Group: Advanced Members Posts: 1,099 Joined: 14-October 06 From: Mobile, Al Member No.: 1,410  |
Barber has a lot of high speed high load right handers, I noticed during around the pits and side roads on the last cool down it was popping, clunking and whining when turned hard at low speeds.
Did I kill it? It had fresh Lucas synthetic with the gm additive in it. If so what now? This post has been edited by FASTFATBOY: Apr 5 2011, 02:58 PM |
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Apr 5 2011, 03:10 PM
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#2
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FRRAX Owner/Admin Group: Admin Posts: 15,432 Joined: 13-February 04 From: Ohio Member No.: 196 |
What year axle is it? Does it have an auburn, a torsen or something else in it?
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Apr 5 2011, 03:29 PM
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#3
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Nothing says 'I love you.' like a box of Hydroshoks Group: Moderators Posts: 5,284 Joined: 23-December 03 From: Granbury, TX Member No.: 4 |
QUOTE (FASTFATBOY @ Apr 5 2011, 09:57 AM)  Barber has a lot of high speed high load right handers, I noticed during around the pits and side roads on the last cool down it was popping, clunking and whining when turned hard at low speeds. Did I kill it? It had fresh Lucas synthetic with the gm additive in it. If so what now? LOL ... welcome to the road of keeping a nice street car nice. Nothing will surface the weak links like road course duty. |
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Apr 5 2011, 03:41 PM
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#4
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Experienced Member Group: Advanced Members Posts: 1,099 Joined: 14-October 06 From: Mobile, Al Member No.: 1,410 |
QUOTE (trackbird @ Apr 5 2011, 03:10 PM) What year axle is it? Does it have an auburn, a torsen or something else in it? Car is a 99 non ss car, stock rear. |
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Apr 5 2011, 03:42 PM
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#5
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Member Group: Advanced Members Posts: 207 Joined: 28-October 07 From: Union, KY Member No.: 1,985 |
Autox is bad enough to kill diffs in the evil s-10 10-bolt!!!
I have been through 4 different diffs 5 times...all in 2 years of hard autox use...welcome to my hell... And the noise depends on the diff...if its a torsen, switch the fluid again and just run it. Friend of mine did that and its still working. |
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Apr 5 2011, 03:45 PM
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#6
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Experienced Member Group: Advanced Members Posts: 1,099 Joined: 14-October 06 From: Mobile, Al Member No.: 1,410 |
QUOTE (Cr0usEEE @ Apr 5 2011, 03:42 PM) Autox is bad enough to kill diffs in the evil s-10 10-bolt!!! I have been through 4 different diffs 5 times...all in 2 years of hard autox use...welcome to my hell... And the noise depends on the diff...if its a torsen, switch the fluid again and just run it. Friend of mine did that and its still working. Is this the one with the little arm that pops out? |
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Apr 5 2011, 04:07 PM
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#7
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Advanced Member Group: Advanced Members Posts: 647 Joined: 30-December 03 From: Paris, Texas Member No.: 74 |
Pull the cover and look for broken teeth on the gears. This is what failed on my car and then eventually destroyed everything.
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Apr 5 2011, 04:24 PM
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#8
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Experienced Member Group: Advanced Members Posts: 1,099 Joined: 14-October 06 From: Mobile, Al Member No.: 1,410 |
QUOTE (AllZWay @ Apr 5 2011, 04:07 PM) Pull the cover and look for broken teeth on the gears. This is what failed on my car and then eventually destroyed everything. A buddy of mine told me it has a torsen in it. |
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Apr 14 2011, 12:10 AM
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#9
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Engine and Tools Moderator Group: Advanced Members Posts: 1,859 Joined: 23-December 03 From: Lebanon TN Member No.: 6 |
99+ most likely Torsen. 98 was Auburn.
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Apr 14 2011, 11:54 AM
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#10
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Advanced Member Group: Advanced Members Posts: 458 Joined: 11-October 05 From: Uniontown, Pa Member No.: 917 |
QUOTE (FASTFATBOY @ Apr 5 2011, 09:45 AM) QUOTE (Cr0usEEE @ Apr 5 2011, 03:42 PM) Autox is bad enough to kill diffs in the evil s-10 10-bolt!!! I have been through 4 different diffs 5 times...all in 2 years of hard autox use...welcome to my hell... And the noise depends on the diff...if its a torsen, switch the fluid again and just run it. Friend of mine did that and its still working. Is this the one with the little arm that pops out? S10's use the Gov-Lock diff which is nothing more than a ticking time bomb in any performance application. And yes, the gov-lock is the complex-looking one with the little arm. It's also an 8.5" 10 bolt, and not the 7.625" 10 bolt the Camaros use. Your 99 should have a Torsen diff. And I'm pretty sure you don't need any additive in it since it doesn't have clutches. |
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Apr 14 2011, 01:41 PM
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#11
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Member Group: Advanced Members Posts: 181 Joined: 13-January 04 From: Bloomington, IL Member No.: 122 |
QUOTE (z28jeff @ Apr 14 2011, 06:54 AM) QUOTE (FASTFATBOY @ Apr 5 2011, 09:45 AM) QUOTE (Cr0usEEE @ Apr 5 2011, 03:42 PM) Autox is bad enough to kill diffs in the evil s-10 10-bolt!!! I have been through 4 different diffs 5 times...all in 2 years of hard autox use...welcome to my hell... And the noise depends on the diff...if its a torsen, switch the fluid again and just run it. Friend of mine did that and its still working. Is this the one with the little arm that pops out? S10's use the Gov-Lock diff which is nothing more than a ticking time bomb in any performance application. And yes, the gov-lock is the complex-looking one with the little arm. It's also an 8.5" 10 bolt, and not the 7.625" 10 bolt the Camaros use. Your 99 should have a Torsen diff. And I'm pretty sure you don't need any additive in it since it doesn't have clutches. It was just hot. My Auburn did that the first few years I raced it. Hasn't "Cluncked" for awhile so I sprung for a new Trutrack to be ready for Nationals this fall. Sidney CMC2 #64 |
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Apr 14 2011, 01:52 PM
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#12
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Experienced Member Group: Advanced Members Posts: 1,099 Joined: 14-October 06 From: Mobile, Al Member No.: 1,410 |
QUOTE (Sidney @ Apr 14 2011, 01:41 PM) QUOTE (z28jeff @ Apr 14 2011, 06:54 AM) QUOTE (FASTFATBOY @ Apr 5 2011, 09:45 AM) QUOTE (Cr0usEEE @ Apr 5 2011, 03:42 PM) Autox is bad enough to kill diffs in the evil s-10 10-bolt!!! I have been through 4 different diffs 5 times...all in 2 years of hard autox use...welcome to my hell... And the noise depends on the diff...if its a torsen, switch the fluid again and just run it. Friend of mine did that and its still working. Is this the one with the little arm that pops out? S10's use the Gov-Lock diff which is nothing more than a ticking time bomb in any performance application. And yes, the gov-lock is the complex-looking one with the little arm. It's also an 8.5" 10 bolt, and not the 7.625" 10 bolt the Camaros use. Your 99 should have a Torsen diff. And I'm pretty sure you don't need any additive in it since it doesn't have clutches. It was just hot. My Auburn did that the first few years I raced it. Hasn't "Cluncked" for awhile so I sprung for a new Trutrack to be ready for Nationals this fall. Sidney CMC2 #64 It does have a Torsen, the whining on turns was heat related. The popping was the roto-joints needing to be re torqued. I tightend all the mounting points and lock nuts an its quiet now. Service manual says it requires the additive. This post has been edited by FASTFATBOY: Apr 14 2011, 02:08 PM |
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Apr 15 2011, 06:20 PM
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#13
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Veteran Member Group: Advanced Members Posts: 2,511 Joined: 14-November 04 From: Homer Glen, IL Member No.: 540 |
QUOTE (FASTFATBOY @ Apr 14 2011, 08:52 AM) Service manual says it requires the additive. The additive is just to quiet it down for the street. |
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