Just to add my little bit...
Cam bearings were fitted in all spitfire blocks upto Mk4 Spitfires,
(Eng no.FH25000). After this the camshaft ran in the block as per
other models, but at the reduced diameter. So you are right in your
assumptions that the cam bearings can be retro fitted to later blocks:
Joe Curry <spitlist@gte.net> wrote:
> The cam bearings being offered appear to cover all Spitfires to 1972
> 1300 engines.
>
> Ny quandary is: If the cams are the same from 69 through the 1500's,
the
> bearing journals must all be the same size and in order to install cam
> bearings in the engines that do not have bearings, one would have to
> align bore the block to the size that will allow the bearings from
> earlier engines to fit. I had that done with my 1500 engine, but I
> don't know if the machine shop used early Spitfire cam bearings or
some
> "off-the-shelf" ones that they had.
==
Phil Johnson
66 Spitfire4 Mk2 FC73949
68 GT6 Mk1 KC13299
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