2G Rear Differential to Rear LSD....

[RuBiCaNT5X]

I just found out that my 2G Eclipse is not equiped with a rear LSD. What kind of options are out there to make the conversion? Is it an entire rear end swap or is it more involved than that?

 

[steve]

The simplest solution would be to swap the whole rear diff with one that is LSD. I don't know how difficult or possible it is to swap in and diff and VCU inside your existing housing. How did you decide your isn't LSD?

Steve

 

[RuBiCaNT5X]

Originally posted by steve
The simplest solution would be to swap the whole rear diff with one that is LSD. I don't know how difficult or possible it is to swap in and diff and VCU inside your existing housing. How did you decide your isn't LSD?

Steve

I looked on the driver side door and there was no orange sticker saying there was a LSD. I looked on the rear transfer case and there was a stick but not one that would imply LSD. There were no markings about an LSD what-so-ever.

 

[steve]

OK, just checking. It would be a bi*** if you changed it only to find out you didn't need to.
I'm not aware of any other check besides disconnecting the drive shaft and turning one wheel to see if the other turns the same or reverse direction. I don't think the VIN is different. If you had the original window sticker it might say.

Steve

 

[RuBiCaNT5X]

What does it involve if you were to make the swap? I mean, cost of a rear differential swap in terms of part cost, the amount of time it takes to do such a swap as well...

 

[SDSGSX]

i would like to know also i found out last night my gsx doesn not have a rear lsd . I was thinking about buying one but didn't know how feasable the swap is or wat other options i have...

 

[ACM]

A '99 GSX "should" have a rear LSD, they were factory stock by then. There is a small silver sticker on the housing, upper left if you look under the rear of the car. The sticker will give the CWP ratio (3.545 iirc), and if it has a VC inside the word "Viscous" will be on the sticker.

If you don't have one, the most cost effective conversion is probably to get a Cusco or Kaaz diff intended for an EVO 3 - it uses the same axle noses as a non-LSD DSM, whereas the factory VC LSD has a different stub on one axle that has two sets of splines, one for the side gear the other for the VC.

I've not tried myself, but according to Archer Racing the factory LSD guts cannot be fitted into the non-LSD housing. I can say for certain that a 1.5 way Kaaz can be fitted into a factory non-LSD housing. A complete factory rear end is about $1500 new, the approprite inboard joint about $200. The Kaaz is about $750, with $100-200 labour for the build if you don't do it yourself - so long as you don't disturb the pinion there's no shimming involved so it's a relatively simple assembly.

Do not rely on the Orange door sticker, that's only on earlier cars.
Also, because of how a Viscous Coupling functions, the only difference when rotating a wheel with the rear off the ground is the resistance felt and the effort needed - both cases the other wheel will rotate in the opposite direction.

Charles

 

[njshift]

what year gsx or tsi awd did the rear lsd become "factory stock"?

Charles, thanks for you very useful info.

 

[ACM]

Rear LSD was standard by 97 in the GSX I believe, not sure about earlier; by 97 I believe the GSX only came fully loaded, with the only significant option being the CD changer.

Talons never had the rear LSD as standard, although it became a de facto standard in 98 as the AWD could not be ordered in any other trim than the 25L package (leather, sunroof, ABS, power seat etc) and the LSD was part of that package. The Talon spec I am certain about , as that's when I ordered mine.

Charles

 

[SDSGSX]

Not standard in the 97 =( with my car up in the air and the wheels rolling in 1st gear only the left side tires roll then when i use my foot to stop the back tire that's going then the other tire kicks in. :thumbdown

PS I also don't have ABS :thumbdown :thumbdown

 

[ACM]

I thought from talking to friends that the GSX was that way, apparently not.

On the plus side don't worry about the ABS - by 97 the Denso system had been replaced by a Bosch system which is complete cr*p. The Denso system on my 95 is vastly superior to the Bosch system on my 98. The Bosch system cuts in far earlier than the Denso system, and once activated there is much less braking available from the Bosch. I pulll the fuse from my 98's Bosch system in the winter I find it so intrusive, whereas I've never been tempted to do that to my 95.

Charles

 

[unior]

from my understanding all 2G AWDS came with LSD rear

 

[cait sith]

I thought the Rear Kaaz/Cusco LSD fittings were non US market parts numbers? That's what Road Race says at least.

I'd like to replace my rear Viscious unit with a Clutch LSD at some point, but the whole 300 dollar a side for parts along with the 800 dollars for the diff kind of puts a damper on that.

 

[ACM]

Yes, that's what Kaaz says, however it's not quite accurate.
Non-LSD axles will work fine, as will the single-spline LSD axle.

I have all three axle typee, having already converted my 95 from non-LSD to OEM LSD, I can state first hand that they are all dimensionally identical, having measured them up. Also, the 1G axle noses are the same part numbers, so at least the stub axles themselves could be obtained from a 1G.

Charles

 

[cait sith]

Originally posted by ACM
Yes, that's what Kaaz says, however it's not quite accurate.
Non-LSD axles will work fine, as will the single-spline LSD axle.

I have all three axle typee, having already converted my 95 from non-LSD to OEM LSD, I can state first hand that they are all dimensionally identical, having measured them up. Also, the 1G axle noses are the same part numbers, so at least the stub axles themselves could be obtained from a 1G.

Charles

Thanks for the information. I have a friend who converted his non-lsd rear end to a Viscious rear end on his rally project car, and that means I could probably get those stubs for a song and a dance.

Hope to see you this autocross season again, now that I have a motor in my car...

-Tristan

 

[leet]

Originally posted by unior
from my understanding all 2G AWDS came with LSD rear

Incorrect. I believe there is a thread somewhere clarifying this.

EDIT: NVM. You posted in said thread.

 

[unior]

holy crap i'm sooo sick of hearing about lsd non lsd now

at this point even if my car didnt have it i could not give a fly rats asss!

good luck to those who continue to attempt to find out what t/e/l's have lsd

I'm out!!

 

[Martillo]

Rear LSD was standard by 97 in the GSX I believe, not sure about earlier; by 97 I believe the GSX only came fully loaded, with the only significant option being the CD changer.

Talons never had the rear LSD as standard, although it became a de facto standard in 98 as the AWD could not be ordered in any other trim than the 25L package (leather, sunroof, ABS, power seat etc) and the LSD was part of that package. The Talon spec I am certain about , as that's when I ordered mine.

Charles

I have a 97 GSX and I do not have a LSD or leather seats. Lol so yea those were not factory standard on my side.

from my understanding all 2G AWDS came with LSD rear

FALSE.