i just put the my manual ralliart up on a hoist and turning 1 wheel makes no effect on the other wheel. is this normal? is there anyway to check if the car was manual from the factory?

Hi, it should have LSD stamped on it. On the the top of the gearbox.

Cheers Dave

Unrelated I know, but when I had my Evo on the hoist just before I sold it, turn one wheel and all 4 turned, lol. Pretty cool.

I don't think both would turn anyway because it's a torque sensing diff not a clutch pack diff. As above, check the actual gearbox.

The vin number will tell you if its was made with auto or manual.
the vin should be 6mmTJ then a number 7 for man or 8 for auto.

but what if the gearbox has been removed?
like Lenda found out when he bought his ralliart, had an exe engine and gearbox in it.

you should be able to feel when driving if it has an LSD, in an non LSD go round roundabout, put foot down on exit, outside wheel will light up. LSD wont

On a roundabout? Bit unsafe!

Find a secluded bitumen road, stop with one front wheel on the dirt verge, the other on the bitumen. Do a swift take off. If the car bogs down through wheelspin on the dirt, no LSD. If you have a normal takeoff or leave rubber on the bitumen, you have LSD. Simple.

Pretty sure he cant drive it as it was bought as a wreck from the damaged vehicle auctions and he also asked how to know if its a factory manual they why i said the vin will tell you.

If it runs, jack the front up and have someone hold 1 wheel.
Very gently let off the clutch.

Are you seririous, hold a frekin wheel while someone lets off the clutch

If the car can start, it can drive but regardless this will show sfa

If is a LSD then both wheels will spin together. If not there can be a couple causes

1 wheel is bound up by brakes
LSD has been damaged in the accident and or with incorrect fluid in the box
The box has been damaged in the past and repalced with a non LSD model

As Dave stated, check if the LSD is stamped on the box, is unusual to bust a Ralliart LSD but does happen to those who abuse the cars and there are plenty of people out there who do that lol

If it runs, jack the front up and have someone hold 1 wheel.
Very gently let off the clutch.

You can no longer speak.

Now, since the RA/Quaife LSD's are torque biasing... It's very hard to tell.

This is how they work:

In the case of slip, the wheel in contact can receive up to X times the torque applied to the wheel which is slipping, where X is the torque multiplication value for the differential. In this sense, torque sensitive differentials are not strictly limited slip - once an output shaft becomes free (e.g., one driven wheel lifts off the ground; or a summer tire (http://en.wikipedia.org/wiki/Tire) comes over ice while another is on dry tarmac (http://en.wikipedia.org/wiki/Tarmac) when the car goes uphill), no torque is transmitted to the second shaft and the torque-sensitive differential behaves like an open differential.

Now, the PROPER way to test this is to apply very light pressure to the brakes (this creates load, the other will not spin under ZERO load), and then turn one wheel. If the other turns, you have an LSD.

If you can jack up the front of the car why would you put your hands anywhere near it.. The lsd should activate if you accellerate the wheels while holding the brake on a tiny bit? this should create the torque force needed to engage it.

Being a LSD all you have to do is raise the front wheels and turn one of them as Mal said
If both turn then it has LSD, if not then its either broken or doesnt have it at all

Being a LSD all you have to do is raise the front wheels and turn one of them as Mal said
If both turn then it has LSD, if not then its either broken or doesnt have it at all

Again, it is a torque bias LSD, you need to create load before trying this. It will work one one person holds one wheel while one spins the other, or under very light brake load, otherwise it will act as an open differential.

Ever wondered by LSD-equiped Magna's lose drive when one CV snaps? You cannot multiply torque by zero. The only torque bias LSD available for the Magna that will spin both under zero load is the Wavetrac.

Exactly correct, one wheel needs to have at least a little bit of a resistance otherwise it will act just like normal open differential. Dean if i correct Wavetrack lsd on the other hand will spin EVEN with 0 load on one of the wheels?

thank for the reply's. tried holding 1 wheel and spinning 2nd wheel. still nothing. i cant see how lightly holding the brake would have any different effect but i will try it today. the car drove into the workshop but wont be driving out as its being stripped for parts so no way to test it by doing a burnout. the gearbox is suppose to be going into my superchrged 6g75 tj sports project but i don't want to install till i've confirmed the lsd

Did you check what was stamped on top of the box like was suggested above twice?

Dean, just to clarify, EVERY good working Ralliart LSD I have had here the method I use works, even works on my Triton ute on the back end. There is enough drag from the lsd when the engine is off to test this way.

Lets face it, I have been working with these cars a damn long time and while it will not check the condition of the diff it certainly will check if one has been fitted or is present

Did you check what was stamped on top of the box like was suggested above twice?

Come on Dave that would be to straight forward, I think your asking a bit much.

You should just stick the diff in your new supercharged car, you will pretty quick if it's LSD then! Or take MattVRX advice it seems safe!

Next time my car is up on the hoist i'm gonna test that.

I tested my manual TH exec yesterday and when its in neutral the other wheel does not spin and when its in gear the other wheel spins backwards when seems correct for a non-lsd. maybe i needed to test the ralliart in gear also? i checked and it was factory manual according to the vin but i cant check if it says lsd on the gearbox till tomorrow (Update 9/9/13 It was LSD and had LSD Stamped on the Gearbox has been spinning 2 wheels for 2 years now)