How much horsepower did the Merlin engine have?
Over its production life, over 50 different development types of the Merlin Engine were produced, ranging from just over 1,000 horsepower, to right at the end of the war, the two Merlins that powered the de Havilland Hornet giving 2,050 horsepower each. Packard V-1650 Merlin. The V-1650 liquid-cooled engine was the U. S. British Rolls-Royce Merlin engine, which powered the Spitfire and Hurricane fighters during the Battle of Britain in 1940.