Giulia clutch question

[AlfaNeely@domain.elided]

Bob,
       The workshop manual for the 85 spider also calls for a wear limit 
thickness of 6 mm.  The lining material I have been using for relining clutch 
disks is 4 mm.  That would put the relined disk at about 4 + 4 + 1 or 9 mm.  
I am estimating that the steel plates in the center are one mm thick.
       So how do you measure the disk?  Squeeze the spring disks in the 
center together?  Or measure with the springs spreading the disk?  I vote for 
the former.

Ciao,
Russ Neely
Oklahoma City

In a message dated 11/15/2002 7:31:25 PM Central Standard Time, 
owner-alfa-digest@domain.elided writes:


> 
> Date: Fri, 15 Nov 2002 17:46:22 -0600
> From: "Bob McKeown" <mcneon@domain.elided>
> Subject: Giulia clutch question
> 
> Does anyone know the thickness of a standard Sachs Giulia clutch disk right
> out of the box? I'm helping a friend with a new Giulia project, and we have
> a clutch problem. The disk he has (which came in the car but hadn't been
> used much at all) is about 9mm thick. One major supplier tells us their
> disks are 10mm. I think both are just too thick.
> 
> Years ago I had a local shop reline the clutch disk in my Duetto. They did a
> nice job, installing a new facing that looked just great. But, when I
> installed it in my car, the pressure plate center ring sat much too close to
> the flywheel - the extra disk thickness threw the geometry of the clutch
> off, and I couldn't adjust the linkage enough to make it work properly.
> Finally, in desperation, I adjusted the pivot nuts (lever-type pressure
> plate) and regained enough throw to make it work okay.
> 
> As I recall, the next new disk I bought was much thinner, maybe on the order
> of 8mm or so, and I was able to set my pressure plate pivots back to their
> original height. (The Duetto spec book, by the way, calls for a minimum
> thickness of 6mm for a worn clutch disk.)
> 
> I think we're going to either adjust my friend's pressure plate pivots or
> shim the pressure plate to make it work, but I'm curious to know what the
> correct disk thickness should be.
> 
> Bob McKeown
> Nashville
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