Merlin

General Characteristics (Merlin 61) Type: 12-cylinder supercharged liquid-cooled 60° "Vee" piston aircraft engine Bore: 5.4 in Stroke: 6 in Displacement: 1,647 in³ Dry weight: 1,640 lb - - - - - - - - - - - - - - - - - - - - - - - - - Performance Power output: 1,565 hp at 3,000 rpm @12,250 ft 1,390 hp at 3,000 rpm @23,500 ft Source: Wikipedia.com

Aircraft installations: Spitfire, P-51

	Source: Vintage V-12's

Rolls-Royce Merlin

The Merlin was a 12 cylinder, 60° "V", 27 litre, liquid cooled piston aircraft engine built during World War II by Rolls-Royce and under licence in the United States by Packard.

It was one of the three best aero engines in the world at that time, and powered many notable warplanes. The Merlin name came from a bird (a small falcon also known as "pigeon hawk") rather than King Arthur's legendary magician.

Engine Components
Valvetrain: Overhead camshaft-actuated, two intake and two exhaust valves per cylinder, sodium-cooled exhaust valve stems

Supercharger: Two-speed two-stage, boost pressure automatically linked to the throttle, water-air aftercooler installed between the second stage and the engine.

Fuel system: Twin-choke updraft carburetor with automatic mixture control
Oil system: Dry sump with one pressure pump and two scavenge pumps.

Cooling system: 70% water and 30% ethylene glycol coolant mixture, pressurized.

Source: Wikipedia.com