There are so many Type R LSD's for sale on Ebay and its tempting to buy.

 

Only the CTR LSD will fit. The ITR LSD is a larger diameter, and the CTR uses the smaller diameter that works in Cable trannies, LS trannies, and the 92-93 GSR transmission.

HTH.

 

Ummmm ...Wrong!! ITR/CTR same Part Number Gus'
and they will both fit you just have to mate up the right diff ring..

 

I have asked the same question on different forums and I am always told it won't fit. Do you have first hand experience with this? have you installed a CTR or ITR LSD in a Y1, S1, J1 or YS1?

Thanks

 

it's been done.. here's how..

http://courtneyeg9.streetracing.org/btech.trans.y1.html

 

i was thinking of doing that same set up, but with a usdm ys1 mainshaft & counter shaft. usdm itr 2/3/4, with a 92-93 ys1(gsr) fd ring gear on the ys1 differential(or itr lsd if i can get one for a reasonable price). i have all the parts, except for the gsr fd ring gear wich i got to get at the dealer! so i'll have ls 1(actually gsr with the 4.40 fd), itr 2/3/4, and ls 5th wich should be a touch slower than a gsr fifth! i hope it works, since is all theory at this point!

 

What happens if you change the FD? Higher number FD = higher revs at highway speeds?

 

so, can you just put the LSD without changing the shafts and gears?
I like the gearing on my Y1, and don't want to play with final drive gears and custom gearing.

 

I'd like to know how the GSR/ITR bearings are even remotely close, because they're not at all, aside from being sealed roller bearings, that's it. They are different sizes. Also how do you fit the 92-3 YS1 ring gear on the R lsd, the housing and ring gear of an R lsd are physically larger than the YS1, and for you to be able to put the ring gear of a YS1 on the R you would have to have the inside edge machined out to fit (which there is no way in hell I want that in my trans! Kind of like having wheels without the center fiting snugly around the hub ring, ok for wheels, bad in trans). Then the case of the R lsd is larger diameter then the YS1, it's possible this could fit, I have never tried, but it doesn't look promising looking at the two side by side.

 

Sure have... Who do you think gave hime that information on his site

-Dave

 

If thats the case then you cant use the ITR LSD it will only work with the 98Spec or 96 Ring gear

-Dave