Transmissions and Drivetrain Need help with your trans? Problems with your axle?

9 bolt posi rebuild parts help

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Old May 12, 2010 | 12:29 PM
  #1  
Nater36's Avatar
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Car: 1989 Firebird Formula
Engine: 310 HSR, TFS heads, zz4 cam
Transmission: T5
Axle/Gears: 9 bolt 3:70
9 bolt posi rebuild parts help

i just got my car up and running after an almost two year sit. The car posi'd but for about five feet(which was all the longer i kept my foot in it) my friend said turning into a 1 tire.. I did let off about the time he said it turned into a 1 tire so im not sure if that has anything to do with it, but im sure at 147k miles its ready for something.. The gears were replaced along with a rebuild kit from randysringandpinion.biz (or something close to that) about ~1000 miles on that(2 years ago).. so, to get to my question. From 9bolt.com or any other site their may be for that matter. What do i need to get my posi back? Exact parts would be a great help.

Side notes- Im sticking with the 9bolt dont suggest anything else
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Old May 12, 2010 | 12:36 PM
  #2  
Twin_Turbo's Avatar
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From: Enschede, Netherlands
Car: 82 TA 87 IZ L98 88 IZ LB9 88 IZ L98
Engine: 5.7TBI 5,7TPI 5.0TPI, 5,7TPI
Transmission: T5, 700R4, T5, 700R4
Axle/Gears: 3.08, 3.27, 3.45, 3.27
Re: 9 bolt posi rebuild parts help

randys ring & pinion is still in business, http://www.ringpinion.com

Depending on the condition of your rear end you may need a new center section, new cones or just machined cones and some shimming.
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Old May 12, 2010 | 12:41 PM
  #3  
Nater36's Avatar
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Car: 1989 Firebird Formula
Engine: 310 HSR, TFS heads, zz4 cam
Transmission: T5
Axle/Gears: 9 bolt 3:70
Re: 9 bolt posi rebuild parts help

would a new carrier from 9bolt.com fix all three?

or the "posi overhaul kit" (Includes 2 posi cones as well as spider gear kit)
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Old May 12, 2010 | 12:44 PM
  #4  
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From: Enschede, Netherlands
Car: 82 TA 87 IZ L98 88 IZ LB9 88 IZ L98
Engine: 5.7TBI 5,7TPI 5.0TPI, 5,7TPI
Transmission: T5, 700R4, T5, 700R4
Axle/Gears: 3.08, 3.27, 3.45, 3.27
Re: 9 bolt posi rebuild parts help

It all depends on the condition of your case. If it's worn out new cones won't help
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Old May 12, 2010 | 12:53 PM
  #5  
Nater36's Avatar
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Car: 1989 Firebird Formula
Engine: 310 HSR, TFS heads, zz4 cam
Transmission: T5
Axle/Gears: 9 bolt 3:70
Re: 9 bolt posi rebuild parts help

the shop did not say anything about the case being worn out, however i beleive they did something wrong and could be the cause.. when i push on the side of the wheel the axle kind of clunks and moves slightly.. it did this straight out of the shop and since the car sat i never got around to taking it back
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Old May 12, 2010 | 01:06 PM
  #6  
Twin_Turbo's Avatar
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25 Year Member
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Joined: Jun 2000
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From: Enschede, Netherlands
Car: 82 TA 87 IZ L98 88 IZ LB9 88 IZ L98
Engine: 5.7TBI 5,7TPI 5.0TPI, 5,7TPI
Transmission: T5, 700R4, T5, 700R4
Axle/Gears: 3.08, 3.27, 3.45, 3.27
Re: 9 bolt posi rebuild parts help

The case is internally spring loaded. The end of the axle sits in a cup and between the cup on each side are 3 preload springs from big to small that sit in each other. This could be your problem although it could also be your wheel bearings, there shouldn't be any excess play there.

You can see it here, the cup in the center of the right part is where the axle rests against


2 machined cones:
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Old May 12, 2010 | 01:15 PM
  #7  
Nater36's Avatar
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Posts: 249
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Car: 1989 Firebird Formula
Engine: 310 HSR, TFS heads, zz4 cam
Transmission: T5
Axle/Gears: 9 bolt 3:70
Re: 9 bolt posi rebuild parts help

ok, thank you for those images that really helped.
new wheel bearings, and new cones are in order. would you recommend spider gears too or do you think they are fine
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Old May 12, 2010 | 01:20 PM
  #8  
Twin_Turbo's Avatar
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25 Year Member
iTrader: (25)
 
Joined: Jun 2000
Posts: 5,364
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From: Enschede, Netherlands
Car: 82 TA 87 IZ L98 88 IZ LB9 88 IZ L98
Engine: 5.7TBI 5,7TPI 5.0TPI, 5,7TPI
Transmission: T5, 700R4, T5, 700R4
Axle/Gears: 3.08, 3.27, 3.45, 3.27
Re: 9 bolt posi rebuild parts help

hard to tell really, before ordering a bunch of stuff it would be wise to pull the posi and inspect it to see what you need. You'll never know what's lurking in there otherwise.

You may need bearings too, the wearing posi sends metal everywhere. I would suggest a good sized magnet installed somewhere when the overhaul is complete.
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Old May 12, 2010 | 01:24 PM
  #9  
Nater36's Avatar
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Joined: Jan 2008
Posts: 249
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Car: 1989 Firebird Formula
Engine: 310 HSR, TFS heads, zz4 cam
Transmission: T5
Axle/Gears: 9 bolt 3:70
Re: 9 bolt posi rebuild parts help

i had the bearing kit installed with the gears.. think they would be worn out after only 1000 miles?
im also debating on a new carrier from 9bolt.com $455 after shipping (not new) says good used
or the new cones, spider gears, bearings $560
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Old May 12, 2010 | 01:26 PM
  #10  
Twin_Turbo's Avatar
Supreme Member
25 Year Member
iTrader: (25)
 
Joined: Jun 2000
Posts: 5,364
Likes: 51
From: Enschede, Netherlands
Car: 82 TA 87 IZ L98 88 IZ LB9 88 IZ L98
Engine: 5.7TBI 5,7TPI 5.0TPI, 5,7TPI
Transmission: T5, 700R4, T5, 700R4
Axle/Gears: 3.08, 3.27, 3.45, 3.27
Re: 9 bolt posi rebuild parts help

Usually no but if the wheel has slop when pushing it sideways, something is not right.
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Old May 12, 2010 | 01:31 PM
  #11  
Nater36's Avatar
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Joined: Jan 2008
Posts: 249
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Car: 1989 Firebird Formula
Engine: 310 HSR, TFS heads, zz4 cam
Transmission: T5
Axle/Gears: 9 bolt 3:70
Re: 9 bolt posi rebuild parts help

yea, it had that straight out of the shop.. i actually remember mentioning something to him about it now.. he said something about the axles.. i asked so i need new axles, he said no and then explained something im not sure if it was the wheel end or differential end he was talking about.. I did record a 17 year old uncertified kid removing the axles with a large hammer of some sort and taking the carrier out.. they didnt start back up on the car until the next day and i wasnt around.. the shop is across the street from my relatives house so i had the cam in the window.. im wondering if he didnt mess something up

maybe ill just take it to a different shop and see what the damage is
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