Torsen unit

[fastegg]

Looking at a Torsen T-1 on ebay, $250 starting bid for my '98 LS..
Would there be any benifit me paying extra (alot extra) for a T-2 ?
I'm not a racer, the inside wheel is never likely to be off the ground..
Ive heard T-2's are a bit quieter and use a little less petrol...
Any surgestions ?

 

[rdm20fan]

What is the difference from T-1, T-2?
Never heard of this?

 

[BlackUZZ31]

T2 has less moving parts, lasts longer and a bit stronger

T1 would be fine for an auto <300hp just make sure there is no damage on the teeth of the many gears inside or any signs of abuse.

 

[fastegg]

T-1 ... T-2

Thanks for the info.... yeah i'd rather put in a T-2 although for my purposes a T1 would be fine... but i'm a wanker and want the T2 but they rearly come up for sale and when they do their exe...
... I'll keep looking... i figure ive just gotta be in the right place at the right time...

 

[Spinnetti]

How do you tell if one is a T1 or T2?

 

[fastegg]

Hi Spinnetti...

Here's some clips i got about T-1 and T-2's... apparantly T-2 is just a better diff, runs quieter, possibly less fuel used and just behaves better (whatever that means. I do know that if a T1 has one wheel off the ground it can behave like an open diff, it needs both wheels on the ground but a T2 doesn't have this issue... don't quote me on this it's just what ive read on forums so truth unknown... I just know if i had a choice i'd go the T2 any day....

Having trouble downloading photo'd of T1 and T2's.... you got an email adrress ?

 

[fastegg]

T-1 and T-2 difference

Hi Spinnetti.... Well as little as ive been told about Torsen 1 & 2 ... T1's are the origional torsen unit. If one back wheel is off the ground the other wheel won't drive. I believe a T2 if one wheel is off the ground it will still drive like a clutch diff.... Ive read their a bit quieter and us a smidge less fuel.
As you can see... there is a difference in the type of gears inside them.....
I have an '98 LS400 and with to put in a Torsen unit diff centre. Any centre out of a 1995 Mk4 Supra or late model Soarer will bolt straight in but in really after a Torsen 2.... I mean if i'm gunna put one in i'm happy to wait for a T-2
Trouble is their rare and exe.... but i'll wait...... as i want to keep the car till i'm too old to drive.... (I'm 52 going on 21)

 

[fastegg]

Torsen brouchures read poorly...

I'll post these Torsen papers up on a different format.... then you might be able to read them

 

[fastegg]

T-1 and T-2 difference

Hi Spinnetti.... Well as little as ive been told about Torsen 1 & 2 ... T1's are the origional torsen unit. If one back wheel is off the ground the other wheel won't drive. I believe a T2 if one wheel is off the ground it will still drive like a clutch diff.... Ive read their a bit quieter and us a smidge less fuel.
As you can see... there is a difference in the type of gears inside them.....
I have an '98 LS400 and with to put in a Torsen unit diff centre. Any centre out of a 1995 Mk4 Supra or late model Soarer will bolt straight in but in really after a Torsen 2.... I mean if i'm gunna put one in i'm happy to wait for a T-2
Trouble is their rare and exe.... but i'll wait...... as i want to keep the car till i'm too old to drive.... (I'm 52 going on 21)

 

[Spinnetti]

Hi Spinnetti.... Well as little as ive been told about Torsen 1 & 2 ... T1's are the origional torsen unit. If one back wheel is off the ground the other wheel won't drive. I believe a T2 if one wheel is off the ground it will still drive like a clutch diff.... Ive read their a bit quieter and us a smidge less fuel.
As you can see... there is a difference in the type of gears inside them.....
I have an '98 LS400 and with to put in a Torsen unit diff centre. Any centre out of a 1995 Mk4 Supra or late model Soarer will bolt straight in but in really after a Torsen 2.... I mean if i'm gunna put one in i'm happy to wait for a T-2
Trouble is their rare and exe.... but i'll wait...... as i want to keep the car till i'm too old to drive.... (I'm 52 going on 21)

haha.. I'm 48' .. Dunno which I have but its NOS Toyota part. More amazing is that a Toyota company now owns Torsen! Works fantastic. ALL "limited slips" require at least some "reference torque" to work (one wheel in the air=no go). I have 4 Torsen diffs of different kinds and one Clutch style: One in the Lex, one in each of my 2 Audi A4's (center diffs), one in my VW Touareg (center diff I think) and a TRD Clutchpack in my AE86. None of the 5 make any noise that I can hear. The one in the lex makes it understeer a bit under decel (leading me to believe its a T2) but if you stand on it at corner entry where it feels like you are going too fast, it digs in and rockets you through the corner. I totally cut out TRAC once I got that in, as it was worthless (literally cut/welded to remove it totally including the accumulator, secondary throttle etc).

This from the wikipedia (check the torsen site too, explains it all):
1. The original Torsen T-1 (Type A) uses crossed axis helical gears to increase internal friction. The Type I can be designed for higher torque bias ratios than the Type II, but typically has higher backlash and the potential for Noise, Vibration, and Harshness (NVH) issues, and requires a precise setup/installation.

2. The later Torsen T-2 (Type B) uses a parallel gear arrangement to achieve a similar effect. There is also a specialist application of the T-2, known as the T-2R (RaceMaster).

3.The latest Torsen T-3 (Type C) is a planetary type differential, in that the nominal torque split is not 50:50. The Type C is available as single or twin version; the Torsen twin C differential has front and center differential in the same unit.[2]

 

[fastegg]

Hi Spinnetti...

What's an 'NOS' Toyota part ?

 

[Spinnetti]

"New old stock" new part in the factory box that you can't buy from the dealer any more.

 

[fastegg]

Nos

Arrrrrrrr... Ive seen 'NOS' for years and never knew what it ment....
Ya learn something everyday....