Bob,

I also have a 1993 850, stick.

I priced out clutch replacement just a couple weeks ago but didn't actually
have it done (had the exhaust system replaced instead - incl. catalytic).
Ouch.  Was getting fumes inside the car.   Also had battery and serp/timing
belt and tensioner replaced.  All of that (not the clutch) was just under
$2000.

They said it would also cost around $2000 to have the clutch replaced, along
with the clutch master cylinder and the main bearing oil seal.  All these
are recommended, from what I hear, when  you have the clutch done.  They did
not say what the parts versus labor cost was.  That was the whole cost.

They test drove my car, determined that the clutch was fine, and not to
worry about it until it actually starts to slip in 4th or 5th under
accelleration.  That's why I decided not to have it done.  I have 152K miles
on the car.

To me, the clutch seems grabby in 1st gear (not slippy).  Also, with clutch
disengaged (foot to the floor) but car still in 1st gear, I think something
is still rubbing a little bit, when slowing down to stop.  I can feel it.
As if clutch does not totally disengage of if something's gummed up, causing
tranny to still be slightly connected to flywheel.  If I put car in neutral
and do same, all is OK.

What symptoms are you seeing that you are having it replaced?  How many
miles are on your car?

Thanks,

Mike