924 Clutch

[AirCooledExcellence]

Hi All,

The clutch on my '83 924 has given up! Does anyone know how many hours of labour is required for this job?

Cheers,

Tim.

 

[geoff Ives]

LOTS!! I had the job on my 1982 car done this year and my garage isn't speaking to me any more (joking) as they completely misjudged the time require when they quoted for the job.
Geoff

 

[924nutter]

As your's is the 83 model it has the five speed gearbox so the torque-tube cannot be disconnected and drawn backwards as suggested in the Haynes manual, which means that it is a pain in the backside removing the transmission before undoing the four bell housing adapter bolts and the exhaust hanger to slide the torque-tube back. Ive done the job using that method, and that is the way to go, because if the engine is removed, the front suspension has to be lowered to clear the sump, and this method has inherent problems with suspension re-alignment, and probably is the slightly more time comsuming method, but there isn't a lot in it. By drawing the torque tube back, sufficient gap is created to remove the bellhousing, and whoever does it does not have to struggle because access to the bell-housing bolts is better from underneath.

Based on a competent mechanic using a hoist, with the car overhead and standing upright, I reckon at least
remove transmission; 90-100 minutes
undo exhaust hangers and four torque-tube bolts; 30 mins
remove and replace clutch; 75 minutes
reposition torque-tube and bolt up; 30 mins
replace transmission; 90-100 minutes

total: 355 minutes 0r 5 hrs 55 minutes approx, or £300 plus parts and vat

 

[pse_SC]

Finally - is there enough difference to make it worth doing?

I doubt it, Vince - why go to all that trouble anyway? They’re OK as there are.
Turbo bellhousing liable to be different as the box is a (so-called) ‘proper’ Porsche design.

 

[924nutter]

Turbo clutch has spline for a 25mm drive shaft the 2.0 has 20mm shaft in the torque tube. Also the bell housing has the starter motor mounting and a properly sorted 924 cable clutch is not heavy. If yours is then it is likely the fingers on the diaphragm have worn away to next to nothing.

 

[vincematthews]

Turbo clutch has spline for a 25mm drive shaft the 2.0 has 20mm shaft in the torque tube. Also the bell housing has the starter motor mounting and a properly sorted 924 cable clutch is not heavy. If yours is then it is likely the fingers on the diaphragm have worn away to next to nothing.

Thanks John - I was afraid of that . . . I'll have to pull my head out of the sand and take off the dark glasses.
I suppose 160k miles and no recorded clutch change is asking a lot!!

 

[sstman]

I had the clutch replaced on my 924 a couple of months ago, a total revalation!. I've owned the car for 26 years, and it had always been a heavy feel to the pedal, but never having any problems with traction, I just assumed that's what a cable system was like!. It was very heavy, once I got my 968 and was swapping between the two cars.

Since having it changed (was getting very noisy when pedal depressed) it's now far lighter than the clutch on the 968!, first time I drive the car I really thought the cable had not been reattached to the clutch!. Huge improvement, and I should've done it years ago.

 

[vincematthews]

I had the clutch replaced on my 924 a couple of months ago, a total revalation!. I've owned the car for 26 years, and it had always been a heavy feel to the pedal, but never having any problems with traction, I just assumed that's what a cable system was like!. It was very heavy, once I got my 968 and was swapping between the two cars.

Since having it changed (was getting very noisy when pedal depressed) it's now far lighter than the clutch on the 968!, first time I drive the car I really thought the cable had not been reattached to the clutch!. Huge improvement, and I should've done it years ago.

Sorry about the delay in replying - just zoned out for a while!
Thanks that's good to know - that's definitely moved clutch change higher up my list of priorities. Did you have any issues with getting it set up correctly? There were so many things I had too do when I got (saved!!) the car in 2001 that as long as the clutch functioned, it was OK.