'The Motor Yearbook for 1949'* gives basic specifications for both the XK
120 and the XK 100 cars. As I doubt if the latter was actually ever made,
this is an interesting feat, probably accomplished by extrapolating from
the 120. They reckoned a production 2 litre engine would have given 95
bhp @ 5000 rpm as opposed to the 120's 160 bhp. It doesn't sound a lot
these days, but compares well with a fairly cooking Bristol. I think
you're right about the demand for the 120 being so overwhelming that Bill
Lyons saw no point in glueing up the production lines with something he
would probably make less money on and wouldn't sell so well anyway.
Talking of production, I was taken round Browns Lane sometime in the mid
50's and I still haven't worked out how they managed to produce even one
car a day, let alone the number that they did.

Ron Robinson

*That's where the Gardner figures came from - I don't want you to think I
carry that sort of stuff around in my head.

There is (or at least was) a four cylinder XK engine on display at the
Jaguar Daimler Heritage centre at Browns Lane. Not sure if it was ever
installed in a car though.

Malcolm