The Liberty L-12 was 27 litre water-cooled 45 degree V-12 aircraft engine of 400 horsepower (300 kW).
It was designed by Jesse Vincent and E. J. Hall of the Hall-Scott Motor Co. and manufactured by Packard, Lincoln, Ford, General Motors, Nordyke and Marmon during the 1st world war. It was a modular design where 4 or 6 cylinders could be used in one or two banks. 20,478 were built between July 4, 1917 and 1919. Displacing 1650 cubic inches, bore was 5 inches (127 mm) and stroke 7 inches (178mm). A single overhead camshaft for each cylinder bank operated 2 valves per cylinder. Dry weight was 383kg and takeoff power at 2000 rpm was 449 hp. July 4 is the 185th day of the year (186th in leap years) in the Gregorian Calendar, with 180 days remaining. ... 1917 was a common year starting on Monday of the Gregorian calendar (see link for calendar) or a common year starting on Tuesday of the Julian calendar. ... 1919 was a common year starting on Wednesday (see link for calendar). ...
An inverted Liberty 12-A was also refered to as the V-1650 and was built up to 1926. 1926 was a common year starting on Friday (link will take you to calendar). ...
The gas engines are so well insulated that it sometimes seems to be in the rear, since that's where you hear the exhaust (the Sport has a more prominent exhaust note, tuned to give a sense of power).
The engine always started, but it was very noisy for a few minutes, making a pronounced diesel noise complete with clanking, gradually quieting down over time; and power was very low for the first minute or two.
The Liberty is sold as the Cherokee outside of the United States, where the old Cherokee was never considered as a viable addition.
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