75 HP Bristol engine.

[Lewis]

I own the HRG 2 Litre. The one and only. An experimental chassis built by HRG in about 1948/9 for a Bristol engine. Having got as far as a rolling chassis with an engine borrowed from Bristol Cars, the penny dropped when HRG realised everyone else was using this engine for racing. The engine was, very reluctantly, returned and the chassis ended up with a cousin on a New South Wales sheep station.

To complete the car I found an early 400 engine near Melbourne. It is engine number 1065, stamped 400/75 on that brass plate on the offside rocker cover.
Now the Oz Bristol gurus don't acknowledge the existence of a 75 HP engine outside early Filton development cars, so what have I got?

I wrote to Tony Crook a few years ago but did not receive a reply. A pity because long ago when I married in London he lent me a 403 for a weekend.

Does anyone out there know whether 75 HP engined cars were sold by Bristol and if so how many and to whom?

Lewis.