Giovanni

Has anyone done this? If I want to change to LSD or PSD do I need to get a complete gearbox or can I swap some parts? What about PSD?

Thanks...

Bill Ball

PSD has a pile of supporting electronics and is tied into the ABS, etc. With an 89, swapping in an LSD is the way to go. Only issue is the need to drop the tranny or fuel tank, as I do not think there is enough work room behind the diff case to do this in situ. Otherwise, it a straight enchange of the open diff for the LSD, using your existing ring gear and shimming the new unit for fit and backlash.

AO

I don't think PSD would be practical as it's an electro-hydrailic solution that dependes on wheel speed sensors, etc. that your '90 may or may not have. You need a pure mechanical solition IMHO. I think Bill Ball did this in his car with parts swapped out from 928 Int'l.

AO

He beat me to it...

Bill Ball

I haven't done it yet, although I bought the LSD to do this TWICE. First one I sold before I got around to it. The second one is hibernating in my garage. Sterling Gee shows the process here:
http://www.928sg.com/5sp.htm

RyanPerrella

if your going LSD you may want to check out a Quaiffe, everyone swears by them, you just simply swap out the carrier.

sublimate

If you go the PDS route you can replace the actuator w/ a bolt and forgo all the eletronics, etc.
https://rennlist.com/forums/928-forum/231737-psd-delete-advice-needed.html

Giovanni

What happened to this thread?

https://rennlist.com/forums/showthre...ght=lsd+adding

AO

Not sure what you mean...? I can read it. You can't?

Giovanni

It the Inglish, lol

mark kibort

our LSD is a good one . the older style is supposed to be a higher value limited slip, but ive done it a few times on a few different racers. HUGE difference. Some folks have done near lock up versions, but if you want to do something that actually works and works well, do what the guys have done that are running the fastest. Seems the mild limited slip found in the later cars works just fine for street use and track.

Mk

Bill Ball

Hi Ryan:

Does Quaiffe make one that will fit a 928? What do you mean by "swap out the carrier"?

Jim bailey - 928 International

Quaiffe....Nope ...never made one probably never will...

Giovanni

Thank you all for your input. Does anyone has a late model (1987? and up) limited slip for sale? The link that Bill provided is pretty straight forward.

Jim bailey - 928 International

Yes of course we do CALL ME