Torsen diffs on the altezza RS200, & diff ratios

Hi,

Just doing some research into the diffs on the altezza SXE10 RS200. I have come to the conclusion that the standard diff is a torsen one. Can anyone comfirm this? As all I have deon is some internet research etc.

The reason for this info is that I am getting ready for some drifting practise and I feel if things on the car are against the fact that I want to be losing traction, something's going to break........... quickly

I've heard bad things (or is that, good things?) about the torsen diff saing that it gives good grip if one wheel loses traction, or hits a bump etc etc, so I if this is the case then surely the altezza aint going to be great at slip sliding

Anyone from here in contact with the Japanese ADC ppl?

Also what diff would be recommended? Make, part numbers etc? CUSCO 2 way? 1.5 way? TRD? weld it up?

cheers

Yeah, chassis plate, the one on the firewall...

Just to elaborate:

A01A - 3.916 ratio Open Centre
A01B - 3.916 ratio Torsen LSD
A02A - 4.083 ratio Open Centre
A02B - 4.083 ratio Torsen LSD

So the 'B' denotes LSD.

...and here's a couple of worthwhile links:

The T-2 Torsen (type B) (the one that's in the Altezza)

Good ol' nice and simple HowStuffWorks.com (did you know the hummer uses Torsen?...)

There's a TRD LSD, right? So what's so special about the TRD 'sport' LSD?

Thanks for all the info there. i will check but I guess it will be a torsen one.

Thanks for the links to the altezza specfic diff, it seems a really good diff for providing grip however I think this will be a problem for drifting.

So does anyone know what the altezza drift club members use diff wise?

I know alot have gone for forced induction route but there is a white altezza with c-west kit that has gone na route and does some nice dori, so Im thinking power would'nt be an issue but would help.......

"Anyone from here in contact with the Japanese ADC ppl?"

I have contact with one, he drives the Blue Blitz SC car, I think he has blew the standard diff already.

Well, mine has the lsd, will see how it goes at the drags on wednesday night, running over double the power, hopefully she holds up.

All the Z and L edition Altezzas have the Torsen.

..... Unless they are 5AT

The BLue Blitz one is niiiiiiiiiiice.......

So you say he has blown the std diff? So can you find out what he's using now?

So what sort of diff arrangement do most ADC members use? I'm guess that some are still using the standard torsen for drift use or is that not right?

I'm just trying to findout if its worth letting the tezza out for some dori action now or get an aftermarket diff first.............

Thanks!!

you dont have the guys emaila ddy do you

Old post i know but .... I have an RS Altezza Tiptronic Z edition and i just checked the VIN plate and it states = A01B

So does that mean i have a LSD after all.... Have always suspected it but hard to test with an auto...


Thanks for any replies.......

Noel

( would be great if my auto has it, just for gloating alone.... )

yup that is the 3.916ratio trosen LSD.

to test your lsd (hehehehe this is where the fun is), make sure its not on snow mode or anything but on power, stick the car in drive, left foot lightly on the brake, and right foot on the gas, just hold the brake enough to hold the front wheels in place and the rear wheels should smoke up.
then release the brake and there should be two black lines

TEST DONE:P (but always retest to ensure correct results hahaha:P)

Nick

Great

I'll go and test it in the morning... before i start gloating.....

I had tried it on a few slippery surfaces ie ... sand and gravel and she dose dig nice even holes before pulling away.... but i had not thought about holding it back with the brake......

Thanks for the reply

put the car up on jacks so both rears are in the air. Turn one wheel one way, and the other wheel should turn the other way. - that is generally how you test weather you have an LSD or weather or not your LSD has blown!

not sure if it works for torsen, but it should...

Nope, that shouldn't work with the torsen diff unless it is preloaded (Like the T-2R). And since the Altezza has the T-2 when there is zero torque on one wheel, there is nothing to multiply across to the other so it acts like an open diff.

All the info can be found in the site I link to in my post above from last year.

Specifically, What happens when I have a wheel in the air?

@ Jasestu,

thanks for all the great info.....


Hope you don't mind but i put some of your info on the Uk LOC as i was asking about LSD on an Auto before and told " Auto's don't have it".... so it's great to have actual data to clear it up.......


cheers

Noel

U-turns on gravel roads are always a good test too. The back should step around nice and quick
What year is your car Noel? Mine's a 99 so had the A01A originally (but I've since fitted an A01B). I didn't know any 5ATs came with the B diff factory fitted, but I guess it could ahve been an option.

Cheers
David

Mines a 2000.....

Oh the back steps out very quick.... any junction wet or dry , no gravel needed ... which is great ( wife dosen't like though),

you're right it wasn't standard on the Z auto's and neither was traction control.....thankfully the orinigal owner picked the right options.....

Have a look here..RS200 - standard and options sheet


Glad i got a Z and not a stardard tipronic as that seems to get nothing extra....

Yaaaa... it worked...... my first No. 11......


must have been at least a foot long....


now i have to save for new tyres

hay im afta a 3.72 diff know of any

Wooo..! That's a nice tall one. Good for 300kph in 6th...

I'd like the revs to be 500rpm lower at 110kph. I always feel the ratio is too short compared to older cars like the Datsun 1600 with its 3.7:1

Where was a 3.72 used?

It wont be for a 6 speed it be for a 5 speed box going 2 have 2 change my gearbox they are in the altezza wagons

Sounds like you got some plans 4tezn aye jase?

I do if things go 2 plan im said 2 say the 6 speed wont be up to the job

im a little confused about the diff ratios listed. on the TRD site they only list a 4.10 and a 4.30 gear as original gears, can anyone clarify? It also lists the 5AT as having the 4.30. I ask cause i can put my hand on a 5AT diff and need to know if i should bother.


I believe the manual has the numerically highest ratio and the sporty auto (5AT)has the numerically lowest. The manual is undergeared IMO, running too many revs at 100kph. I'd like to replace it with the 5AT and drop the revs.

In contrast, my Datsun 1600 runs a 3.7:1....

keith

For a standard appliation - the standard torsen is a very reasonable item! It locks up really nice, It can take massive amounts of abuse and still keep kicking!