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What 10 bolt posi for drag racing?

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Old 12-09-2002, 01:36 AM
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Default What 10 bolt posi for drag racing?

I know I should get a 12 bolt , but I have to keep the 10 bolt for now. The wife grenaded the stock T2 torsen so I am due for a new posi. I am staying with 3.23 gears and I would like to know which would hold up the best with 1.46 60 fts. The Torsen T2R or the Eaton posi? I'd appreciate any input. I know the Eaton can be rebuilt where as the TR2 is trashed once it's damaged. I want to be sure the Eaton will hold up to the Launches of mt YST3500 and ET Drags. TIA.

James
Old 12-09-2002, 01:50 AM
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Default Re: What 10 bolt posi for drag racing?

I am also in the market to buy a posi unit tomorrow. A spyder gear is screwed up in mine and plus in need a 3 series for some 4.10s. Wondering if i should just get the one from SLP for 100 bucks or is there a better option. I have the stud girdle on the way so that should help it withstand a little.
Old 12-09-2002, 08:29 AM
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Default Re: What 10 bolt posi for drag racing?

Damn, James just put a spool in it already.

My eaton posi blew up the 1st time at HRP and it was a 12 bolt. Remember?

Coach

Last edited by Coach 02 A3 Z/28; 12-06-2004 at 11:13 AM.
Old 12-09-2002, 11:16 AM
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Default Re: What 10 bolt posi for drag racing?

James, the Zexel-Torsen is the stronger of the two. The spider gears in the auburn/eaton type posi rears are crap and break much easier than the worm gears found in the Torsen.

SLP used to sell the Torsens for like $99. Until you upgrade rearends, its either another Torsen or a spool if they make them for 10-bolts.

10-bolts SUCK! They will live longer if you can keep any wheelhop from happening. Did you ever run the car on stock tires and get wheelhop? Maybe that caused part of the damage. With slicks, it might live longer.

-Tony
Old 12-09-2002, 02:37 PM
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Default Re: What 10 bolt posi for drag racing?

I appreciate the input guys and boy do I wish a 12 bolt was an option. That darn money tree doesn't grow fast enough to keep up.lol.

Coach- A Spool isn't realistic for us since the car is driven everyday when it's not broke. That would take care of my problems though. Where is that 10 second pass? There was calling your name this weekend (-1400 DA).

Tony-I agree about the worm gears being the weak link.The T2R looks to be the most durable in that sense also. I think the internal posi gears are what shattered on my stocker and the T2R should be a bit meatier in that area....I hope. I think you are right about the wheel hop also , because the Nittos create a sizeable amount of wheel hop when we run them. Well , now to try to locate a T2R. Thanks!! Any ideas or any more opinions?

James
Old 12-09-2002, 02:47 PM
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Default Re: What 10 bolt posi for drag racing?

Sure. Carry a Bible to say a prayer for the 10-bolt before each pass, and a dustpan to sweep up the pieces if it grenades <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

Tony (busted 4 stock rears)
Old 12-09-2002, 03:01 PM
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Default Re: What 10 bolt posi for drag racing?

I don't think anybody even makes a full spool for the gm 7.5.
Only mini spools which are useless to us.
Old 12-01-2004, 01:36 PM
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Arrow

Reviving old thread...

I will be needing something before spring. Anybody have good/bad exp with any units. I believe there are some new units with worm/helicial (sp?) type gears. Any exp with these ?

I will be at the PRI show in a week and a half (www.performanceracing.com), and will be asking some questions as well.

Car has run a best of 11.95 @ 115 w/ 1.66 60'
Yank SS3800 w/ 3.23's car is 50/50 street/strip ~3650#

Probably will change to 3.42's at same time of limited slip/posi change.

Thanks !
'J
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Old 12-01-2004, 02:48 PM
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I can't believe you're running those times with a 10 bolt! Easier to believe with an A4 though than an M6.
Old 12-01-2004, 04:30 PM
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There are still tons of fast 10 bolts out there......... WJ
Old 12-01-2004, 04:50 PM
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Originally Posted by TXCAMSS
I know I should get a 12 bolt , but I have to keep the 10 bolt for now. The wife grenaded the stock T2 torsen so I am due for a new posi. I am staying with 3.23 gears and I would like to know which would hold up the best with 1.46 60 fts. The Torsen T2R or the Eaton posi? I'd appreciate any input. I know the Eaton can be rebuilt where as the TR2 is trashed once it's damaged. I want to be sure the Eaton will hold up to the Launches of mt YST3500 and ET Drags. TIA.

James
How many passes did you have on the first rear rebuild? How's the trans holding up? We are finally pulling my trans out to get it checked out and probably put some better parts in it, but I'm sure the rear will be next

James, the Zexel-Torsen is the stronger of the two. The spider gears in the auburn/eaton type posi rears are crap and break much easier than the worm gears found in the Torsen.
Who sells them?

There are still tons of fast 10 bolts out there...
for now
Old 12-01-2004, 08:36 PM
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Originally Posted by WJ SOM SS
There are still tons of fast 10 bolts out there......... WJ
Like the above poster said..."for now."

They are lighter and more power efficient, but it's only a matter of time before it go BOOM!

In our local club, one of my bud's 10 bolt (a quick A4) just puked. He took pics...

http://www.pbfbody.com/forum/showthread.php?t=1387
Old 12-05-2004, 10:10 PM
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Boy, this one was from a long time ago.LOL. I shattered a gear in the original Torsen so I built the 10 bolt up to strengthen the weak areas of the 10 bolts. I went with an Eaton HD posi, same 3.23 gears, solid pinion spacer, TA stud girdle and I welded up the axle tubes to the housing. I have since pulled 1.43-1.44s (1.47-1.49s average) and we have pounded hard on it. As you know we race a lot and so far so good. We also stepped up to the PT4200 which seems to be a bit softer on the launch, but no signs of fatigue and that was about 2 years ago. Some say were are lucky, but I call it an efficient and somewhat durable option. I don't plan on spraying the car so wheel hop would be the killer, but our suspension mods should pretty much prevent that.
Old 12-06-2004, 10:32 AM
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Thumbs up

Originally Posted by TXCAMSS
Boy, this one was from a long time ago.LOL. I shattered a gear in the original Torsen so I built the 10 bolt up to strengthen the weak areas of the 10 bolts. I went with an Eaton HD posi, same 3.23 gears, solid pinion spacer, TA stud girdle and I welded up the axle tubes to the housing. I have since pulled 1.43-1.44s (1.47-1.49s average) and we have pounded hard on it. As you know we race a lot and so far so good. We also stepped up to the PT4200 which seems to be a bit softer on the launch, but no signs of fatigue and that was about 2 years ago. Some say were are lucky, but I call it an efficient and somewhat durable option. I don't plan on spraying the car so wheel hop would be the killer, but our suspension mods should pretty much prevent that.
Thanks ! that was EXACTLY the type of reply I was looking for. I am planning on hitting the track often next year. Any thoughts on a change to 3.42's ? Car is street/strip 50/50. I cross the traps around say 52-5300 now.

'J
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Old 12-06-2004, 12:06 PM
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If you are looking for cheap, the T2R probably ain't it. I think I paid $500 at Goldenwest for one. Excellent autocross and drag unit, but look at the casting carefully before installing. Problems with porosity in the critical ring gear flange area make me refuse the first two units. Deburr all sharp edges before installing. About 400 M6 passes on it and it never broke, but it was only a mid 12 car.
Old 12-06-2004, 02:19 PM
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I personally would not spend the money on 3.42 gears. There would be no ET improvement to be noticed and the 3.23s are bullet proof. Good luck at the track!
Old 12-09-2004, 09:29 PM
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I've been looking for a full spool for my 10 bolt but I don't think one is made by anybody. I'm still running the stock Auburn and I think its seen its better days. I think I could get by with a full spool being that my car is no longer street driven and having the A4. With c-clip elims., and upgraded axles I think the 10 bolt would live w/ my stock internal setup. May contact Richmond and see what they could do. They are about 15 miles from me......
Old 12-09-2004, 09:38 PM
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Originally Posted by 1ScrudeDude
I can't believe you're running those times with a 10 bolt! Easier to believe with an A4 though than an M6.
im pullin' 1.5x 60ft times with my stock 10 bolt with alot of runs. my posi went out this week though
Old 12-09-2004, 10:10 PM
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jst get amoser 9 inchther only like $900 bucks
Old 12-09-2004, 11:21 PM
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Um, I would like to know where you can get a Moser 9 inch for $900. It is more than that for just the housing...no center section, gears, differential, etc.

Total cost is at least $2000 from what I have seen.


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