On Tue, 23 Nov 1999, Barry Schwartz wrote:
> Actually it's a slight bit diceier than that. Up thru 1972, the disk is a
> 6-1/2 x 10 spline. From 73-74 it's a 7-1/4 x 10 spline, and then (1975 on)
> it becomes a 7-1/4 x 20 spline (single rail). The pressure plate would be
> sized accordingly, so up thru 72 it's a 6-1/2 incher, and from 73 on it
> would be a7-1/4 inch. Anything with a single rail transmission should be a
> 7-1/4 x 20 spline, but a 3 rail could have a 6-1/2 or a 7-1/4 dia x 10
> spline setup depending upon what year flywheel (or engine) it has -
Oh, and just to make it really interesting, don't forget that the earliest
"Mk.1" Spitfires originally had a spring-style pressure plate and not the
diaphragm type as all later cars did. Yeah, that's ALSO a different
(friction) plate! ;-)
--Andy
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