Streak

Hello fellow 930 enthusiasts!

I am taking care of my Dad's 1988 930 Turbo Cab. He is the first and only owner and the car has 36,000 miles.

I drive it around for him and have things fixed and maintained. It's rough but it's my Dad so I suffer through it

I think something big is about to let go in the clutch dealywhapper.

The other day during the course of a drive the clutch pedal feel changed dramatically. It got lighter and feels notchy when pressed as it travels through the swing if that makes sense. It has also became much more difficult to pull from a stop smoothly, the chatter is significant. There is also a weird noise that sounds like rushing fluids when the clutch is depressed, it goes away when the clutch is let out. Actual shifting seems OK. I don't know if what I'm feeling is clutch or hydraulics or the whole thing is going to explode and Dad's gonna kill me. Any ideas?

And then there is this idea: If the clutch needs to be replaced would it make sense to swap out the 4 speed for either the factory 5 speed from '89 or does RUF still make one? Side note, I found an original RUF brochure from 1988 advertising the 930 mods in the door pocket so this is something he's been thinking about for a looooong time.

Would a 5 speed make the car more drivable? We live in a hybrid city/rural setting. We're in 2nd gear almost all the time and a lot of the time we could probably drive around in 1st. I was thinking that the 5 speed might be shorter gears and that would make it more "normal" for driving around. How much is a 5 speed? will the 89 5 speed bolt right in? What's a clutch job run?

Any advice is appreciated.

flatsixforme

My guess is the clutch slave is bad...if so, probably less than $100 part and then bleeding the system.

Chris M.

Patrick Motorsports sells a short bellhousing G50 made to fit into the 930 tub without a lot of fuss. About a 3 years ago a friend bought one and it was $12K.

There is a lot of good info on Pelican such as this thread.

Streak

Thanks for the info. A bad slave would be a great answer. That thread was a good read.

Mark Houghton

Uhhh....Streak, dude, it's great that you're exercising your dad's car. But be advised that the only year that had a 5 speed (and thus hydraulic actuated clutch) was the '89. All earlier models were 4 speed and clutch cable operated. Your problem has nothing to do with a non-existant slave cylinder
Also be advised that if the car still has the original factory clutch (which it most likely does per your description), it would be of the funky rubber centered disc type which - over use time and age - tends to desintegrate without much warnikng. That, my friend, is most likely your issue. Park it, pull the engine and tranny as a unit, and prepare to replace it with a spring centered disc.

The 5 vs. 4 speed debate goes on and on. I, for one, prefer the tall legs of the 4 speed. While others are constantly grabbing gears as they run out of rpms, the 4 speed folks just keep the pedal to the metal.

Streak

Ha! Good to know. I would have spent hours looking for that slave.

TT Surgeon

Agree w Mark, You don't have a slave, one of the many nice things about a 930.
I wouldn't waste money on a 5 speed conversion, 4 speed is tough as nails.
PICS!!!

HkPlinker

and be prepaired to shell out $ 3,000

Streak

So the spring centered clutch, is that a typical replacement part? Is it the same as a 3.2 Carrera?

Pics!

fullquack

A 930 clutch is unique, no matter if it's got a rubber center or a spring center disk. You cannot simply use carrera parts.
Changing from a rubber center disk to a spring center disk is a common upgrade, however, itdoes require a different throw out bearing as well.

Mark

Rick GT3

go with Kennedy clutch...

Streak

Thanks for the help guys.

shlobeck

Just had this exact thing happen on my '86. All the comments are correct regarding the clutch disc. Your car is well over due for a new one. Probably with a new pressure plate, through-out bearing and anything else while the motor/ transaxle is out. For me it was a 5k bill when it was all said and done. My car had 39k miles and 25 years before I needed a new clutch disc. Actually the pressure plate still had some meat on it. But All were replaced... At least I know the car was babied over the years...Usually they don't last 20k miles..Best 5k I ever spent! Good luck..

Handy930

Hey Fullquack, tell us more about the throw out bearing. MY 930 which I have had for 20 years had the rubber disc replaced when I bought it. I have replaced the TO bearing a couple of times but just ordered a TO bearing for a 79' 930. What should I have ordered? Just putting a complete rebuild together and ready to fire up with a new TO. Now I am wondering.

fullquack

My bad...I hope I did not possibly mislead anyone here. My car has a early style ligtweight clutch assembly, which requires an "EXTENDED" throw out bearing sleeve, not a different bearing itself....sorry got ahead of my self.
I just did my complete clutch on my '84, bought all the needed componants from Chris @ Turbocraft. I went with the light weight clutch assembly again (same style the 3.0 liter engines had), although I went with a stronger clutch upgrade over stock spec.'s.
I went will full Sachs pieces, my car already had the lightweight style of clutch installed from the previous owner, so I did not need to buy the extended throw out bearing sleeve, or the starter gear spacer.
I too bought just the normal throw out bearing, but had to remove the actual bearing itself from the standard mounting flange & re-install it onto the extended throw out bearing sleeve.
Total cost in parts including complete clutch assembly, throw out bearing, flywheel, flywheel bolts , pressure plate bolts, crankshaft guide bearing = $2500.00. I did my of wrenching, thus no labor costs.
Mark