BMW 801 Type: 14-cylinder two-row air-cooled radial engine Length: 2,006 mm (79 in) Diameter: 1,290 mm (51 in) Dry weight: 1,012 kg (2,231 lb) Power output: 1,560 PS (1,539 hp, 1,147 kW) at 2,700 rpm for takeoff at sea level [Later versions up to 2,000 PS (1,973 hp, 1,471 kW)] Power-to-weight ratio: 1.13 kW/kg (0.69 hp/lb) | R-2600 Type: 14-cylinder two-row air-cooled radial engine Length: 62.06 in (1,576 mm) Diameter: 55 in (1,397 mm) Dry weight: 2,045 lb (930 kg 1,750 hp (1,305 kW) at 2,600 rpm at 3,200 ft (975 m) military power 1,450 hp (1,080 kW) at 2,600 rpm at 15,000 ft (4,575 m) military power Power-to-weight ratio: 0.86 hp/lb (1.40 kW/kg)) | R-1830 Type: 14-cylinder two-row air-cooled radial engine Length: 59.06 in (1,500 mm) Diameter: 48.03 in (1,220 mm) Dry weight: 1,250 lb (567 kg) 1,200 hp (895 kW) at 2,700 rpm for takeoff 700 hp (522 kW) at 2,325 rpm cruise power at 13,120 ft (4,000 m) Power-to-weight ratio: 0.96 hp/lb (1.58 kW/kg) |