Fahad

I have complete gear package from thunder racing, now i can't decide to choose the best one between AUBURN POSI UNITS & Eaton Posi



Your helps guys...

Thanks

DynoDR

iTrader: (1)

Go with the Eaton.

jamnut

iTrader: (4)

Most driveline shops will tell you eaton.

oOoLy

What is the difference between the posi units & Eaton Posi ?

Fahad

This question was in my mind

what do you think of the difference?? why Eaton is better??

Stone0fFire

the auburn uses a clutch or clutches
while the eaton or zexel/torsen uses some mechanical..
metal.. i dont know the word for it.
so the auburn wears out,
and the eaton/torsen breaks.

but auburn, from what i have heard
is a little better around corners,
while the eaton/torsen keeps a straight line better,
because it doesnt wear out.
but.. it breaks, and is known to be the weak point in even the 12bolt and 9"

from what ive heard,
the spool doesnt break

mzoomora

iTrader: (36)

The Auburn and Eaton both function the same, just two methods to the same end. The cones in the Auburn are used to create friction just like clutches, and both are preloaded with springs. Eaton clutches can be upgraded, as well as the preload springs. A torsen is a torque biasing diff, which doesnt actually work unless you are applying torque, but is weaker. The Eaton is the strongest and most reliable IMO and experience. The factory Eaton G80's are weak points, but the aftermarket Eatons are very reliable.

The main thing to keep in mind is that if you are using the 7.6 rear, it is still only going to be a 7.6. So even the strongest available posi will leave you with a smaller gear set, bearings, axles, etc. If you are pushing good numbers and launching hard, save your money and update the whole rear to a 12 bolt/ 9".

Wnts2Go10O

iTrader: (12)

getta detroit true trac unit. and no notta locker, the worm gear unit they came out with.

sickss228

iTrader: (27)

Lets put it this way I had a auburn in my 10 bolt for 9 days before it broke, my buddy has had the eaton for well over 2 years with no problem, I also have a eaton in my 72 chevelle and in my 12 bolt. go with eaton their the best period.

redarrow

For what its worth, the optional auburn rear in my 01 Hawk started making noise at about 20K. It now has 27K and it's at the dealership right now having a new one installed under warranty. I never beat on the car, so I don't know what caused it, but my experience with their product is a negative one. I had the standard unit in my 96 Formula and put close to 90K on it and never had a problem with it. (I never beat on that car either).

01SLPSS

iTrader: (47)

Eaton over Auburn/ Tru-Trac over Eaton/ Spool over Tru-Trac!!!!!

Fahad

Now i see the Eaton is better to buy

Thank you guys for the advices

jimmyblue

iTrader: (11)

Don't forget the T-2R Torsen as an option, it has a higher
bias ratio and preload so you -do- get some traction even
with one wheel in the sand, it does very well on split-mu
surfaces and still behaves pretty well on corners (though
if you like to corner at full throttle it will let you get loose
just like the clutch types). The T-2R is heavier constructed
than the OEM unit, more helix gears etc.

The only real source I have found for these is Strano's. They
recommended to me that the T-2R was better for road course,
auto-X but that a clutch type would take drag strip type abuse
better. I believe it involves the torque biasing mechanism and
what happens when you finally make it slip under high power.
Clutches are meant to slip. The Torsen sypes that work on a
metal-metal bind, you want to have bias the torque and -not-
be slipping. But if you go over-the-top you will be putting some
really harsh friction heating into the gearset (you do not want
to do that). Or, the leverage-bind that's supposed to buck the
torque the other way, might leverage bust the case maybe.
At any rate, I think the Torsens are superior for the road and
if you want the strongest straight line, and don't care about
cornering in the rain, go for an Auburn Pro with the strong
clutches. These can be harder to find also, I think they try
-not- to sell them to Little Johnny Furious on purpose though
some distributors seem to care less than the manufacturer.

Just food for thought, I'm no expert but I checked all this
out when I made my selection a while back.

oOoLy

There are 2 Eaton Posi Unit ( 19559-1 28 Spline and 19663-1 26 Spline ) I want to know which one should I get with my stock axles ?

mzoomora

iTrader: (36)

19559-1
Your stock axles are 28 spline.