Patrick, the MK IV and the 1500 use the same body style. The diffences in
the cars being the length of the rear axles, and the engine and trannies
used in them (some of the first 1500s still used the three rail tranny
though). Other than trim and such that is your difference.
Patrick Bowen
-----Original Message-----
From: Patrick Baize [mailto:speedracre@netzero.net]
Sent: Tuesday, November 23, 1999 8:12 PM
To: Barry Schwartz
Cc: Joe Curry; spitfires@autox.team.net
Subject: Re: Lots o questions
So, I have a 71 -72 motor (FK makes it that year per V.B.)
Yet I pull off a 10 spline 7 1/4 disk, which matches the Fly wheel and
pressure plate.
I don't have any pictures of a MK4, was it the same body style as the 1500?
Pat 63 Spitfire ( with some newer parts)
Barry Schwartz wrote:
> >Undoubtedly, you ordered a clutch for the Mk1 and got the smaller one.
> >When it comes to the MkIV and 1500 clutches, it gets a bit dicier. The
> >reason is while the pressure plate is virtually the same, the disks are
> >different, owing to the different splines on the transmission's pilot
> >shaft. The Disk for all the three rail transmissions has the same
> >splines (10 of them). The single rail transmissions have finer splines
> >and therefore more of them. If you order a 3-piece clutch setup be sure
> >that you specify whether your transmission is a single rail (late
> >Spitfire) or a 3-rail (early one). You should get the one for the MkIV
> >if you have a 3-rail tranny connected to the MkIV engine.
> ******************************************
> 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 -
>
> Barry Schwartz (San Diego) bschwart@pacbell.net
>
> 72 PI, V6 Spitfire (daily driver)
> 70 GT6+ (when I don't drive the Spit)
> 70 Spitfire (long term project)
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