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Discussion Starter · #1 ·
My Auburn Pro is basically locking up on me...it produces a popping noise when turning that makes me cringe.

Auburn offers their D-REX program (Differential Exchange Program) in which they'll replace it for $125.

My question is this: The car is setup with a road race suspension, should I go with the less aggressive Auburn High Performance diff. via the D-REX offer, or should I consider another manufaturer all together?
 

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is this a locker or clutch type diff. if its a clutch type, did you put friction modifier in with the lube?


_________________
1961 Falcon 302 T5
12.96 @ 105mph on 14x5" rims with drag radial. all motor!!
horsepower makes me happy

<font size=-1>[ This Message was edited by: dnhracing on 5/6/06 9:47am ]</font>
 

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How long have you had it, before it started giving you trouble?

When it is working right, are you generally satisfied with what it does and how it does it?

From what you are saying, it sounds like is the replacment is less robust than what you arleady have? Seems like that might defeat the whole purpose of upgrading; when something fails prematurely, most guys step it up a notch.

The Auburn cone type friction differental clutch, I've heard, is a step up from the factory 8.8 Traction-lok, which uses flat plates. I don't have any person experience with the Auburn, but I've mostly heard good things about them.

I would suggest that you have 2 possible solutions, maybe 3.
First step...If you take advantage of the swap, you could just run it, see if it happens again, then step up to a ful Detroit Locker (or soft locker). 2). while they are fixing the old Auburn, line up a buyer, and put that money toward the Detroit Locker. Basically, get out of it now (Auburn differential) while the "get'n" is good; might even make a enough to off-set some of the conversion cost.

Finally, if something was just wrong with the old (current) unit, the swap might leave you with a good long-lasting unit, no need to change again.

The answer to the first questions may help you decide whether its worth it. Like that old Kenny Rogers tune...half the game is knowing when to hold'em or when to fold'em.

Funny how factory transmissions and rear ends handle abuse...I know guys that have never cracked the case on their factory transmission or rear end, drive it like the car belongs to idiot step-brother and yet the car gives them no trouble. Maybe its traction, burning rubber with one wheel loaded and the other mostly free wheeling? Who knows. Luck o' the draw?

<font size=-1>[ This Message was edited by: Beoweolf on 5/11/06 7:26am ]</font>
 

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Discussion Starter · #5 ·
It's Auburn's aggressive "top-of-the-line" Pro unit.

Anyway, it worked great for a bout a year. I've had for 3 years, but have only put about 4,000 miles on it...mostly all street miles, too. It started making the noises about 2 years ago and has progressively worsened, so I haven't driven it as much in that time. I switched from factory setup with a complete rear-end upgrade including the diff, Moser 31-spline axles, and Ford 3.55 gears.

As I stated, it has a road racing suspension, so a locker is out of the question. Basically, this thing has locked up, but the only driveability problem seems to be the nasty popping sound when making tight turns.

I have decided to go with a Torsen T-2R. I'll post up how it works out.

Thanks

<font size=-1>[ This Message was edited by: 87stang on 5/11/06 9:28pm ]</font>
 

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To be honest, I haven't heard too much about Ford guys going with Torsen, matter of fact, after about 85 - 86, most Ford guys just stepped up from Traction loc to Detroit locker.

I'm pretty sure a lot of amatur and pro ford teams use Detriot locker in all motorsports...from drag racing to transAm to NASCAR. I doubt if all of them have the same set-up, but I'm guessing with the correct pre-loads and springs, a Detroit locker is not a bad choice for road racing.

The majority of users of the two differentails you are contemplating are in the GM camp. Not that anything is wrong with that... I'm just curious why and where you made the decision to avoid Detriot lockers and what influenced you to go Auburn in the first place?

They are "softer" than a standard DL setup when transfering power, smoother transistions like when coming out of a corner. But, just like with brakes...any friction material will exhibit accelerated wear in high stress, high heat endurance enviornment. Obviously, unlike drag racing, its not hurry up, go, stop and long cool down between rounds.

What was you maintenance schedule on the Auburn? Change differental oil after track sessions?

I'll have to revisit the Auburn diferential to pick up more information about how they are viewed today, like I said, my views on them were formed quite a while ago, same with Thorsen.

Like my Mom used to tell me..."Ignorance is not just embarassng, its painful"
 

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Discussion Starter · #7 ·
Ford Racing sells their Traction-Lok, the Auburn (HD and Pro), and the Torsen. They sell the Detroit Locker, but label it "for race use only".

I've had good luck with parts that Ford sells. The car is primarily street driven, has yet to be road-raced or autocrosssed, and has only seen a dragstrip 3-times.

I went with the Auburn based on recommendations from mustang guys I know...unfortunately they're all drag racers and I kind of rushed my original decision.

However, since then, I've heard nothing but praise from the corner carving guys about the Torsen. I have nothing against the Detroit Locker, and probably would have gone that way had it been recommended to me originally. My main concern at the time was to upgrade to heavy duty parts.

That being said, the swap has been made, and the Torsen T2R appears to be working smoothly and seamlessly...much better than the Auburn ever did.

Bottom line, the Auburn Pro is probably a great application for the straight line car, but doesn't seem well fit for everyday driving and sharp turning...at least mine wasn't.

<font size=-1>[ This Message was edited by: 87stang on 5/16/06 12:54am ]</font>
 

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Discussion Starter · #9 ·
I think it just depends on what you're trying to do with it.

The Auburn was just the wrong choice for my application. Even then, the Detroit would probably have been a better choice.

<font size=-1>[ This Message was edited by: 87stang on 5/17/06 5:21am ]</font>
 
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