R200 Lsd

[acanthophis]

Does anyone know how to convert a GTR LSD Skyline short nose diff center to a R200 longnose to make a LSD diff. I have the both diffs complete.

[Ben]

It can be done - some of the lads in Melbourne have done it. My initial suggestion would be to disassemble both diffs & look for visual indicators.

[acanthophis]

any chance of they phone numbers or email addresses ?

[Ben]

I had Steve Lamb's e-mail address - he may be subscribed to this forum. Gav, can you help?

[drunkenmaster]

you can PM him at www.performanceforums.com

[chris b]

Did any one ever find out if this could be done. I also would like to fit the 4.1 lsd from a shortnose into a R200 longnose.

[jmortensen]

You can fit the shortnose diff in the chassis with some custom mounts. A bunch of guys at Hybrid Z have done this, and they've even used the R230 in a few cars now.

The short nose R200 that you have should be the same diff we got in the 240SX in the US, only we never got clutch LSDs, only viscous LSDs. My understanding of that diff is that the output splines are the same size and spline count in the open and clutch LSD versions. This is based on the available options from KAAZ and Cusco, which I believe show one LSD carrier for the open and clutch type diff and another for the viscous (it's been a while so you might want to check my memory on that). The viscous LSD version uses a larger diameter side shaft with more splines, and so the side stubs from a long nose R200 out of a 280Z or ZX won't fit. If you have the viscous LSD you'll have to figure out shafts to go from the diff to the wheel. I think this has also been done, but it's not as easy as using the open stub shafts or converting to S130 turbo or Z31 turbo CV shafts with adapters from www.modermotorsports.com.

chris, you mention that you wanted to use the "4.1 LSD". The ring and pinion are independent of the LSD and unless you mount the whole shortnose diff you won't be getting the 4.1 part of the deal. You'll have to use the LSD carrier, not the whole thing. The only other issue I'm aware of is the size of the holes in the carrier are different. They changed from 10mm bolt holes to 12mm bolt holes around 85 or so IIRC, so if you're putting a newer carrier onto an older ring gear, you'll have a bunch of slack in the ring gear bolt holes. Some don't worry about this and just bolt it up with the ring gear clocked so that it rests on the smaller 10mm bolts during acceleration. I had some ring gear bolt spacers made to take up the space, basically they are 10mm ID 12mm OD tubing that is cut into spacers and deburred. Just don't make them too long so that they prevent the bolt head from sitting flat on the carrier.

Some links for you:

http://forums.hybridz.org/showthread.php?t=92808

http://forums.hybridz.org/showthread.php?t=97827

http://forums.hybridz.org/showthread.php?t=107996

Apparently there is a difference in the Z33 diffs that makes them incompatible, not sure how that correlates to your Skyline diff: http://forums.hybridz.org/showthread.php?t=107222