("JP" wrote)
What you have in the picture, seems to be a French Lorraine 12 Ed aircraft
engine, circa year 1922. It is a liquid-cooled W-type engine (yes,
60+60=120 degrees most probably), but instead of 6-cylinder configuration,
it's a 12-cylinder layout (believe or not). Capacity 24,4 litres, dry
weight 425 kg. Power output 450 hp.
Check out this link. It has a picture of the engine.
http://www.planes-and-tanks.com/EngineShop/lorraine.htm
Thanks for the link!
About the web page:
When you click on "Aircraft Engines" to see more engines - that link doesn't
work.
Simply turn the capital "E", in the web address, into a lower case "e" for
the "Aircraft Engines" link on the Lorraine page to work. (IE 6.0 and
Firefox/Mozilla)
http://i2.tinypic.com/r7pq4z.jpg
1922 (French) Lorraine aircraft engine in Cambodia
940 lbs
450 hp
12 cylinder
Montblack