Richard Peterson wrote:
>
> The engine rpm in my '77B drops down about 200 rpm or so when I am idling
> and I disengage the clutch (that is, press the clutch [pedal to the floor).
> This seems abnormal to me, but what do the rest of you think? About the
> only thing I can come up with is a throw-out bearing which requires a LOT
> of torque. The car has an overdrive (OH NO, NOT THAT SUBJECT AGAIN) on it,
> if that makes a difference.
>
> Thanks to all who respond.
>
> Rich P.
Rich,
There's a thrust washer on the crankshaft that takes the load when
the clutch is disengaged and the spring pressure in the pressure plate
shoves the crank forward. The RPM drop is caused by the increased
friction there and at the throwout bearing.
--
Charley Robinson
Kerrville, TX, USA
NAMGBR 8-3530
`69 B Roadster
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