Fiat A.80

The Fiat A.80 was an 18-cylinder, twin-row, air-cooled, radial aircraft engine produced during World War II. Rated at 1,000 hp (745 kW), it was a more powerful development of the Fiat A.74.

Applications:
Aeronautica Umbra Trojani AUT.18
Breda Ba.65
CANSA FC.20
Fiat BR.20
Savoia-Marchetti SM.79

Variants:
R.C.41

Specifications:

A.80
Type: 18-cylinder air-cooled radial
Bore: 140 mm (5.51 in)
Stroke: 165 mm (6.50 in)
Displacement: 45.72 L (2789.9 cu in)
Length: 1,155 mm (45.47 in)
Width: 653 mm (25.71 in)
Height: 1,335 mm (52.56 in)
Dry weight: 725 kg (1598.4 lb)
Valvetrain: One intake and one sodium-cooled exhaust valve per cylinder
Supercharger: Single Speed, Single Stage. 4,100 m rated altitude
Fuel system: 1 Fiat carburettor
Fuel type: 87 octane
Cooling system: air-cooled
Power output: 1,000 hp at 2,100 rpm at 4,100 m, 1,100 hp at 2,100rpm at Sea Level
Compression ratio: 6.7:1
Power-to-weight ratio: 0.6 hp/lb at cruise speed