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General characteristics

* Type: 18-cylinder supercharged two-row radial engine
* Bore: 156 mm (6.142 in)
* Stroke: 156 mm (6.142 in)
* Displacement: 53.671 L (3,275.2 in³)

Components

* Valvetrain: One intake and one sodium-cooled exhaust valve per cylinder
* Supercharger: Gear-driven single-stage three-speed
* Fuel system: Fuel injection
* Cooling system: Air-cooled

Performance

* Power output:
o 1,912 kW (2,563 hp) for takeoff
o 1,176 kW (1,575 hp) at 12,000 m (39,000 ft)
* Specific power: 35.6 kW/L (0.78 hp/in³)
* Compression ratio: 6.5:1