Hai gebissen

The shifter coupling was disconnected when I got the car on the trailer...still is...I believe I have the trans in neutral, but I'll confirm next time I'm at the shop...

17prospective buyer

Did the LSD cars come with a LSD additive in the gear oil i wonder? Newer cars commonly use a limited slip additive as a friction modifier, such as graphite.

Vilhuer

G28/13 2J10708 is 208th '88 MY manual box and it has LSD. 2 before '88 MY letter J says it has LSD. 1 would be open diff and 3 PSD. This numbering format was used in '88-95 MY.

Plates in LSD can be so badly worn that other side will turn opposite direction even when gearbox is in neutral. It just means other drive shaft is easier to rotate into opposite direction than get pinion shaft to turn inside gearbox. This is very extreme case and LSD is definitelly in need for rebuild.

GregBBRD

If that is the case....you are going to need more than just new friction discs. These limited slips are generally very neglected and lots have had the wrong gear oil in them. I'm seeing more and more of the big pressure rings that are destroyed from the friction discs galling them....ao many that I keep them, in stock.

Hai gebissen

This doesn't sound good. What do you recommend I do next?

Dave928S

Pull it apart and lay it out on a bench and let us see what the parts look like .... or take it to someone who can rebuild it for you.

They really are quite easy to pull apart and you get a good understanding of how and why they work when you look at the innards ... just open it up and lay the parts out as you see in exploded parts diagrams.

Dave928S

This is correct Roger. You do appear to have learned a little since I posted, for your benefit, the beginners guide to driving a car with manual transmission ....

GregBBRD

Pull the rear cover and see if it still has the limited slip or if someone "stole" it, before the transmission was installed.

If a limited slip....it needs....help.

Mrmerlin

the upside to fixing all of the subsystems on the car at the same time is that,
when its put back on the road,
it will drive better than just about any other new car you could ever drive.

jpitman2

My 83 S has LSD, and works properly. AFAIK it calls up standard GL5 oil...thats what its had for 10+ years, and it still works. The later models may of course be different...
jp 83 Euro S AT 55k

Lizard928

All the G28/13 transmissions that have had a stock LSD in it have had a /12 after the 13 to denote the LSD.

Errka is normally really good at this stuff. But I would remove the fill plug and verify, my money is on an open diff.

Dave928S

I took it from post #8 that the OP has already taken the cover off and the pic is his and shows the LSD spool ... ???

Hai gebissen

Yes, I have pulled the diff cover and confirmed the presence of LSD spool.

Good thing I'm the boss...I could never tie up a lift this long otherwise!

Landseer

Number system in tech spec book changed for 87 up, no longer a 12, instead. a 2 designater. Try it on gravel , you will likely find it is working well such that it can be a lower priority item in your punch list (note also greg's point about checking in neutral v. in gear). Counter view, the guys advising rebuild are the best of the best, and basically say the units rarely don't need rebuild. I'm speaking more towards priorities on what must be a moderate sized punch list.

Hai gebissen

Well, you can see the car in my avatar...this is a substantial project car. I have never heard it run let alone driven it. I am not too far from being able to try to run it...once I have the PKensioner I can install the timing belt and try to fire it up. The odo shows 204K but I don't even know if it works. Why was the shifter coupling disconnected? I don't know...maybe the set screw fell out...maybe the PO disconnected it to winch it onto the trailer, but why not just put it in neutral? Maybe there is something wrong inside the gearbox. I am basically trying to resurrect a car that had been cannibalized to fix another car. This pit may be far deeper than I think.