Are all of the shuddering clutces sprung-center? This could be all/part of
the problem. The shock-absorbing springs rebounding. Solid centers might
just cure it...

I had slightly oily KEP 2300lb clutch discs in my Toyota V6-powered Bay and
my V6-powered Caravelle. Both would slip under full power in 1st (2nd in
the 5spd Caravelle) but not under normal use; no sign of chattering.

However my experience with diesel Toyota Corollas & Coronas (2 of each) was
that they all seem to suffer from severe clutch chatter on takeoff. Good
healthy clutch, flywheel etc. Again, may be a harmonic problem caused by
sprung disc-centers. Nissan Skyline, Toyota Estima and LandCruiser manual
diesels don't seem to do this.

Andrew Grebneff
165 Evans St, Dunedin, New Zealand
<andrew.grebneff@stonebow.otago.ac.nz>
ph   64 (3) 473-8863
fax 64 (3) 479-7527
84 VW Caravelle GL (to be fitted with SVX engine & Porsche G50 trans) RWD
87 Corolla 1.8 DX CE80 diesel sedan FWD
89 Corolla 1.8 DX CE96 diesel van/wagon FWD
89 Corona 2.0 D Select CT170 diesel sedan FWD
92 Toyota Estima Lucida (=Previa) 2.2 turbodiesel RWD
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