EEE

The DMF in my C2 failed, I was stranded and it had to be towed. Anyway, engine and gearbox have been dropped pending replacemant of new DMF and clutch assembly. I took the parts to the shop and saw this worn out gearbox on the floor. Well, it's mine and does look very old from outside with rusty nuts/bolts. I took some pictures and have these questions.

1. Is this a G50/31? Can you tell simply from the appearance (not the engraved nos.) of the gearbox?

2. Without opening it up, is there any way I can tell whether the gears inside have been changed or not? I used to have a TT, the gears in the C2 are definitely taller, but it never occured to me that it could be something other than G50/20 or /21. AFAIK PO did not do anything to gearbox except putting on LWF (which I replaced).

3. Given the outside condition of the box, do I need to be concerned with the gears inside? It's a street car, I have not experienced any problem except that it's a bit difficult to change from 1st to 2nd when the engine is cold (maybe for the first 5 to 10 minutes). No problem when it has warmed up. The shop is going to change the transmission fluid.

Any thoughts?

EEE

Here are the pics.

NP993

Is there any particular reason you think you have a 993 RS transmission? I mean, I've never run the numbers on my gearbox either, but I would put the chances of there magically being /31 in my '96 C2 at somewhere between zero and zero, with the chance of this in a best case scenario being zero.

VNTGSPD

Cactus

Hmmmmm.........

CalvinC4S

look at the stamping under the case. If your lucky it will be a G50 20 2.
If 1st to 2nd are rough as you say, it may be a good idea to have it worked on.

EEE

See pictures

EEE

There have been quite a few PO's who did some expensive mods like complete WB C2S body conversion and addition of Vram.


Sorry, was unable to upload the pictures. Any other ideas?

JM993

Those are the markings of a g50/31. The "2" after "31" represents LSD (which all g50/31s have). Seems your PO and I have similar ideas (see my sig).

Looks like the thing has been underwater though.......

Cheers,
Joe

CalvinC4S

Thats the 2,229 gear box. It fell off the boat back in 94. Which beach did you find it on?

EEE

Actually I had gone through most of your threads before posting. Any suggestions to my specific questions in the 1st post? Are you serious about the remarks on water damage? We have a very humid weather.

JM993

I'm not sure where the car has lived its life, but my guess is that it was driven on salty roads. I was joking about it being underwater - but I suppose this is possible.

To answer your other questions, since the car shifts fine, I'd simply change the flywheel (go back to a LWF) and fill with Mobil Delvac and drive it. The Delvac may help your cold shifting issues.

First gear is tall on a g50/31 so it's probable that the gears are stock g50/31. When get the car back together you can verify by comparing your rpm/speed in specific gears with the gearing charts posted numerous times by Bill Verberg.

Enjoy your g50/31!

Joe

Bill Verburg

Someone had a good day!

bart1

Seriously, that's a good find for EEE!!

Rinty

You're a lucky guy!

Joe: With the taller first gear and the LWF on your car, is the throttle/clutch interplay a bit touchy, when the car starts moving?