2 series carrier gear options
#1
Member
Thread Starter
Join Date: Jun 2017
Location: Illinois
Posts: 143
Received 0 Likes
on
0 Posts
Car: '89 Iroc
Engine: 383 TPI
Transmission: Built 700R4
Axle/Gears: 9 Bolt - 3.45
2 series carrier gear options
Does anyone make a gear set above 2.77 for a 9 bolt, 2 series carrier? I’m finding them, but only for 10 bolt.
#2
Supreme Member
iTrader: (1)
Re: 2 series carrier gear options
No one (except Borg Warner in Aus) makes any gear sets for the 9 bolt except the one Chinese 3.70 gear set that is rebranded by everyone. I bought mine as a Yukon but I'm 100% sure it's the same as the Motive and several others. Get a 3 series Torsen carrier from Australia and you'll be set. That's what I did.
GD
GD
#3
Member
Thread Starter
Join Date: Jun 2017
Location: Illinois
Posts: 143
Received 0 Likes
on
0 Posts
Car: '89 Iroc
Engine: 383 TPI
Transmission: Built 700R4
Axle/Gears: 9 Bolt - 3.45
Re: 2 series carrier gear options
No one (except Borg Warner in Aus) makes any gear sets for the 9 bolt except the one Chinese 3.70 gear set that is rebranded by everyone. I bought mine as a Yukon but I'm 100% sure it's the same as the Motive and several others. Get a 3 series Torsen carrier from Australia and you'll be set. That's what I did.
GD
GD
#4
Supreme Member
iTrader: (1)
Join Date: Sep 2005
Posts: 26,050
Received 1,672 Likes
on
1,269 Posts
Car: Yes
Engine: Usually
Transmission: Sometimes
Axle/Gears: Behind me somewhere
Re: 2 series carrier gear options
No, it is 3 series. Which is why you buy a 3 series carrier to go with it.
#5
Member
Thread Starter
Join Date: Jun 2017
Location: Illinois
Posts: 143
Received 0 Likes
on
0 Posts
Car: '89 Iroc
Engine: 383 TPI
Transmission: Built 700R4
Axle/Gears: 9 Bolt - 3.45
#6
Supreme Member
iTrader: (1)
Re: 2 series carrier gear options
No you get a new 3 series Torsen carrier. Here's my post on the subject:
https://www.thirdgen.org/forums/tran...rg-warner.html
Unfortunately my experience with 9bolt.com was terrible. He stopped replying to my emails. I threw away a lot of money on his "rebuilt" carrier and it was junk.
GD
https://www.thirdgen.org/forums/tran...rg-warner.html
Unfortunately my experience with 9bolt.com was terrible. He stopped replying to my emails. I threw away a lot of money on his "rebuilt" carrier and it was junk.
GD
#7
Member
Thread Starter
Join Date: Jun 2017
Location: Illinois
Posts: 143
Received 0 Likes
on
0 Posts
Car: '89 Iroc
Engine: 383 TPI
Transmission: Built 700R4
Axle/Gears: 9 Bolt - 3.45
Re: 2 series carrier gear options
No you get a new 3 series Torsen carrier. Here's my post on the subject:
https://www.thirdgen.org/forums/tran...rg-warner.html
Unfortunately my experience with 9bolt.com was terrible. He stopped replying to my emails. I threw away a lot of money on his "rebuilt" carrier and it was junk.
GD
https://www.thirdgen.org/forums/tran...rg-warner.html
Unfortunately my experience with 9bolt.com was terrible. He stopped replying to my emails. I threw away a lot of money on his "rebuilt" carrier and it was junk.
GD
Trending Topics
#8
Supreme Member
iTrader: (11)
Join Date: Sep 1999
Location: NJ
Posts: 4,345
Received 298 Likes
on
234 Posts
Car: 92 Firebird
Engine: 4.8 LR4
Transmission: T56
Axle/Gears: 3.45 9 Bolt
Re: 2 series carrier gear options
Recently? I thought I read here that someone bought the domain and site and was selling stuff, but the previous owner disappeared
#9
Supreme Member
iTrader: (1)
Re: 2 series carrier gear options
GD
#10
Member
Thread Starter
Join Date: Jun 2017
Location: Illinois
Posts: 143
Received 0 Likes
on
0 Posts
Car: '89 Iroc
Engine: 383 TPI
Transmission: Built 700R4
Axle/Gears: 9 Bolt - 3.45
Re: 2 series carrier gear options
No you get a new 3 series Torsen carrier. Here's my post on the subject:
https://www.thirdgen.org/forums/tran...rg-warner.html
Unfortunately my experience with 9bolt.com was terrible. He stopped replying to my emails. I threw away a lot of money on his "rebuilt" carrier and it was junk.
GD
https://www.thirdgen.org/forums/tran...rg-warner.html
Unfortunately my experience with 9bolt.com was terrible. He stopped replying to my emails. I threw away a lot of money on his "rebuilt" carrier and it was junk.
GD
#11
Supreme Member
iTrader: (1)
Re: 2 series carrier gear options
GD
#12
Member
Thread Starter
Join Date: Jun 2017
Location: Illinois
Posts: 143
Received 0 Likes
on
0 Posts
Car: '89 Iroc
Engine: 383 TPI
Transmission: Built 700R4
Axle/Gears: 9 Bolt - 3.45
Re: 2 series carrier gear options
Thanks again GD for helping me understand all of that!
#13
Supreme Member
iTrader: (11)
Join Date: Sep 1999
Location: NJ
Posts: 4,345
Received 298 Likes
on
234 Posts
Car: 92 Firebird
Engine: 4.8 LR4
Transmission: T56
Axle/Gears: 3.45 9 Bolt
Re: 2 series carrier gear options
You think that is true? I have a 9 bolt in my car that broke, haven't opened it yet to know what broke though. Car still rolls, so I am THINKING spider gears? I have been eyeing that torsen style carrier and I am wondering whether I should bother spending the money on it. I have a STOCK 4.8, T56 and the 3.45 gears and hard as a rock tires.
#14
Re: 2 series carrier gear options
Actually the Borg Warner differential in the 9 bolt can usually be reconditioned once. It requires a little work on a lathe and some shimming, but they work pretty well for a while after this. They will eventually wear out again. It's the same basic differential that was used in the '64 to '72 GTO, and people, including me, have been rebuilding them for many years. The Auburn can not be rebuilt, but the Borg Warner can, once.
#15
Supreme Member
iTrader: (1)
Re: 2 series carrier gear options
Actually the Borg Warner differential in the 9 bolt can usually be reconditioned once. It requires a little work on a lathe and some shimming, but they work pretty well for a while after this. They will eventually wear out again. It's the same basic differential that was used in the '64 to '72 GTO, and people, including me, have been rebuilding them for many years. The Auburn can not be rebuilt, but the Borg Warner can, once.
GD
#16
Supreme Member
iTrader: (1)
Re: 2 series carrier gear options
You think that is true? I have a 9 bolt in my car that broke, haven't opened it yet to know what broke though. Car still rolls, so I am THINKING spider gears? I have been eyeing that torsen style carrier and I am wondering whether I should bother spending the money on it. I have a STOCK 4.8, T56 and the 3.45 gears and hard as a rock tires.
GD
#17
Supreme Member
iTrader: (11)
Join Date: Sep 1999
Location: NJ
Posts: 4,345
Received 298 Likes
on
234 Posts
Car: 92 Firebird
Engine: 4.8 LR4
Transmission: T56
Axle/Gears: 3.45 9 Bolt
Re: 2 series carrier gear options
The Torsen on the 9 bolt would work fine for you. The 4.8 has about the same torque as an L98, with only a little more HP. The 9 bolt has 28 spline axles and a larger R&P than the 10 bolt, and overall a heavier duty construction. With the torsen carrier there is no spider gears. The Australian guys are putting 500+ HP through them routinely.
GD
GD
Are the spiders the common failure in the stock 9 bolt then? I have the girdle from TA Performance, so I am guessing the spider gears let go, unless I broke an axle or gear teeth, but I think that is unlikely. I was not under a lot of power, I heard a pop, car bucked slightly, I let off, pop again, let off, then gave it a little throttle and it was like the engine was freewheeling. Had a colleague help me later check. When he let up on the clutch the DS spins freely, but car no move. There were no other bad noises than the two low pops, no grinding or crunching like I would think you would get from broken teeth.
#18
Supreme Member
iTrader: (1)
Re: 2 series carrier gear options
Mine wasn't broken when I pulled it apart but it is certainly possible to break the spiders, or even the carrier itself maybe. Doubt you would have broken an axle... I'm curious - how long did it last after reconditioning? Mine from 9Bolt.com was terrible - made so much slurry and bad noises (with additive - several different types - and the Amsoil gear oil has it in it already), that I got the Torsen and swapped it out after only 6 months. It wasn't even really working as a limited slip. I couldn't break them loose easily with it like the Torsen. With the Torsen carrier I'm sideways from every stop and it never makes any noises or metal.
I really think you would be happy with the Torsen and my upgraded LB9 makes probably near the same torque as your 4.8. I also have a 700R4 race trans with a 3k converter that shifts so hard it goes sideways into second. So I'm putting plenty of shock loading on it and no problems. I have the TA rear cover also.
GD
I really think you would be happy with the Torsen and my upgraded LB9 makes probably near the same torque as your 4.8. I also have a 700R4 race trans with a 3k converter that shifts so hard it goes sideways into second. So I'm putting plenty of shock loading on it and no problems. I have the TA rear cover also.
GD
#19
Supreme Member
iTrader: (11)
Join Date: Sep 1999
Location: NJ
Posts: 4,345
Received 298 Likes
on
234 Posts
Car: 92 Firebird
Engine: 4.8 LR4
Transmission: T56
Axle/Gears: 3.45 9 Bolt
Re: 2 series carrier gear options
I got a little over a year out of it and around 11k miles, plus one track event after reconditioning. The track event was 2 days, one of auto cross, and a 140 mile cruise, day two was speed-stop and 3 sessions of the road course getting to around 120mph at the end of the front straight. I must have done the speed stop 25-30 times. I also beat on the car every chance I get.
Although there may be extenuating circumstances with mine breaking. My LH axle leaks out of the end of the tube, so I think the oil is low and has been for some time, but I took an off ramp and sustained the high G, when I got home I could smell gear oil. It puked a bunch on the ramp, so I was even lower level after that. I was going to pull the axle soon to try to fix the leak, but this happened first, lol. I know the TA cover increases the oil capacity slightly, so I think before the initial puke there was still enough oil, but the second one may have done it in
I have another stock 9 bolt I am borrowing to get me back on the road, I will open mine after and see what the damage is, the amount of flake on the magnet. I had changed the oil after about 5,000 miles and it looked good, so either there isn't a lot of wear in that time, or the magnet is really doing it job well. I had planned on doing the oil every 5k miles since they shed so much. When I initially pulled it apart, it was like yours, metal soup and the cones had galled the carrier pretty good since the oil couldn't do it's job. I was hoping the frequent changes would prevent the buildup inside the hard parts and get me a good amount of life. I figured the ~$30 gear oil at my engine oil change was worth the effort and cost, especially since it is easy to change with the TA cover and I have a hand pump on a bottle, wasn't a lot more effort than the engine.
Although there may be extenuating circumstances with mine breaking. My LH axle leaks out of the end of the tube, so I think the oil is low and has been for some time, but I took an off ramp and sustained the high G, when I got home I could smell gear oil. It puked a bunch on the ramp, so I was even lower level after that. I was going to pull the axle soon to try to fix the leak, but this happened first, lol. I know the TA cover increases the oil capacity slightly, so I think before the initial puke there was still enough oil, but the second one may have done it in
I have another stock 9 bolt I am borrowing to get me back on the road, I will open mine after and see what the damage is, the amount of flake on the magnet. I had changed the oil after about 5,000 miles and it looked good, so either there isn't a lot of wear in that time, or the magnet is really doing it job well. I had planned on doing the oil every 5k miles since they shed so much. When I initially pulled it apart, it was like yours, metal soup and the cones had galled the carrier pretty good since the oil couldn't do it's job. I was hoping the frequent changes would prevent the buildup inside the hard parts and get me a good amount of life. I figured the ~$30 gear oil at my engine oil change was worth the effort and cost, especially since it is easy to change with the TA cover and I have a hand pump on a bottle, wasn't a lot more effort than the engine.
#20
Supreme Member
iTrader: (1)
Re: 2 series carrier gear options
I can imagine that running it low on oil is worse for the spiders than it is for the R&P just based on their height above the sump.
I had a tube seal fail shortly after my Torsen swap - it was original (I hadn't done the wheel bearings at the same time) and probably the metal slurry from the cone diff damaged it as well. Fortunately it was just streaming down the tire a bit and hadn't leaked any real quantity so I haven't run low.
I did notice on the TA cover you need to seal the threads for the carrier bearing cap reinforcing studs. Otherwise they weep gear oil.
GD
I had a tube seal fail shortly after my Torsen swap - it was original (I hadn't done the wheel bearings at the same time) and probably the metal slurry from the cone diff damaged it as well. Fortunately it was just streaming down the tire a bit and hadn't leaked any real quantity so I haven't run low.
I did notice on the TA cover you need to seal the threads for the carrier bearing cap reinforcing studs. Otherwise they weep gear oil.
GD
Thread
Thread Starter
Forum
Replies
Last Post
pearl_iroc
Transmissions and Drivetrain
35
07-12-2010 03:47 AM
norcalz28
Transmissions and Drivetrain
2
04-28-2010 09:43 AM
TKO500
Transmissions and Drivetrain
11
03-14-2006 11:10 AM
farm-kid/88camaro
Tech / General Engine
4
07-30-2000 02:47 PM