diff fluid for the T/A

**lilws6** · 03-26-2010, 10:06 AM

since i need to change / check it anyway what fliud should i pick up i know i need some kind of limited slip stuff as well. i just don't know what weight and brand i should get???

**BAD LS1** · 03-26-2010, 10:09 AM

Cheapest 80W90 you can find, takes 1-3/4 quarts to fill roughly. No friction modifier is needed, its a Torsen carrier with no clutches. Your whine will only get worse by the way, put a 18$ solid crush sleeve in it and a new seal if you want that 10 bolt to last at least a little while longer.

**Bobby "Big Daddy" Flay** · 03-26-2010, 10:57 AM

Originally Posted by BAD LS1

Cheapest 80W90 you can find, takes 1-3/4 quarts to fill roughly. No friction modifier is needed, its a Torsen carrier with no clutches. Your whine will only get worse by the way, put a 18$ solid crush sleeve in it and a new seal if you want that 10 bolt to last at least a little while longer.

Mine whines but i think it's cause of the 4:10's

**Beagle** · 03-26-2010, 11:06 AM

mine whined becuase of the pinion bearing going out. Might want to check Ben lol.

**BAD LS1** · 03-26-2010, 11:17 AM

Originally Posted by hbgben

Mine whines but i think it's cause of the 4:10's

10 bolt with aftermarket gears, slight whine is gonna happen. GM Gears, better chance of silence, however $$$. This is why i put a solid crush sleeve in yours.

Pinion bearing failure is brought on by the crush sleeve "crushing" with healthy doses of torque through the tiny pinion and looses bearing preload then the pinon chucks and alters the gear mesh and creates a whine. The external indicator this happened is the pinion seal leaks in most cases.

You should have seen joes car, the pinion fell out of the rear end when the yoke came off and i could pull the big bearing off by turning the pinion upside down lol and the shim was ground to a pulp and shit out and was stuck to the magnet. Best 10 bolt to ever roam the roads right there!

**lilws6** · 03-26-2010, 11:19 AM

is the crush sleeve something i can do in my driveway? i know how to do a pinion seal... sorta but i do want this thing to last maybe til winter if i possibly can. so no friction stuff ok that makes it easier. any help is apreciated i gata do lower control arms on the gf's car today so figure might as well work on my turd too

**lilws6** · 03-26-2010, 11:21 AM

i heard all about joes 10bolt god thats just insane when i get the funds for my moser i wana see just hom much more this 10 bolt can handle. gana need a trailer ready thats for shure

**BAD LS1** · 03-26-2010, 11:22 AM

Originally Posted by lilws6

is the crush sleeve something i can do in my driveway? i know how to do a pinion seal... sorta but i do want this thing to last maybe til winter if i possibly can. so no friction stuff ok that makes it easier. any help is apreciated i gata do lower control arms on the gf's car today so figure might as well work on my turd too

If you gutted rear ends before for rebuilds, then yes.

**lilws6** · 03-26-2010, 11:25 AM

hmm... then thats a no would i be able figure it all out? i'm pretty good with a wrench and sorts any special tools i would need?

**BAD LS1** · 03-26-2010, 11:27 AM

Originally Posted by lilws6

hmm... then thats a no would i be able figure it all out? i'm pretty good with a wrench and sorts any special tools i would need?

Well there should be no need to change shims. So a inch/lb beam-style torque wrench for checking the rotation force after to make sure preload is right would be about it.

**lilws6** · 03-26-2010, 11:31 AM

how many inch pounds? i have one just don't remember what the torque starts at. i'm gana need to find a how to do do this cuz i could get it apart i'm shure its getting it back together rigth where i'm shure i'de need help being the first time

**lilws6** · 03-26-2010, 11:41 AM

And i'm shure tom you have better things to do than walk me thru it

**Josepy** · 03-26-2010, 11:47 AM

Yeah i had the best 10 bolt ever. It now lives in a s-10

**Beagle** · 03-26-2010, 11:52 AM

Originally Posted by Josepy

Yeah i had the best 10 bolt ever. It now lives in a s-10

Mine has been through a shit ton of races over 4 years and a bunch of nitrous passes at the track with dr's.

**WickedSix** · 03-26-2010, 11:57 AM

joe and those damn reverse to third at skeeters

**BAD LS1** · 03-26-2010, 11:58 AM

Originally Posted by WickedSix

joe and those damn reverse to third at skeeters

Oh there has been some higher gears grabbed on the reverse drops before

**lilws6** · 03-26-2010, 12:00 PM

i just wana know how the clutch hold that^^^

**BAD LS1** · 03-26-2010, 12:05 PM

You will need this kit. Typically 2 of the thicker shims and one thin (3 total with shims contacting the forward bearing) will get you right on the money.

http://www.summitracing.com/search/?...rat-4111&dds=1

10-15 (used bearings) 20-25 (new bearings) inch pounds

**lilws6** · 03-26-2010, 12:09 PM

this sound about right? happened across it on ls1tech been searching doesnt' seem too hard accept the 300 ft lb thing
Technically to do it right the differential should come out of the housing so you can set the drag on the pinion bearings. There is NOT a torque spec on that nut, you tighten it till you get I believe 15-25in.lbs of drag on the pinion with used bearings. Takes a HUGE amount of force to do this with a new crush sleeve like 250-300ft.lbs.

**lilws6** · 03-26-2010, 12:13 PM

So i'll order that kit from summit. what else i need again the pinion seal and a crush sleeve should be able to get those at work?(carquest) and cheap 80w90 gear lube? that list sound about right? oh you happen to know the size of the nut on the inside?

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