Fiat A.74

The Fiat A.74 was a two-row, fourteen-cylinder, air-cooled radial engine produced in Italy in the 1930s as a powerplant for aircraft. It was used in some of Italy's most important aircraft of World War II.

Design and development
The A.74 marked a transition for Fiat from liquid-cooled inline engines, to large air-cooled radial engines. Fiat had made a number of smaller radial air engines over the years but the A.74 marked a major increase in power and size. The A.74 family was widely produced and spawned a number of related engines such as the A.76, A.80, and A.82, each successive generation being larger and more powerful than the previous. The entire series grew from 14 cylinders to 18 cylinders with a power output of 870 hp to 1,400 hp.

Variants

 * A.74 R.C.18: With reduction gear and supercharger, rated altitude 1800 m.
 * A.74 R.C.38: With reduction gear and supercharger, rated altitude 3800 m.
 * A.74 R.C.38D:
 * A.74 R.C.38S:
 * A.74 R.I.C.38: With reduction gear, fuel injection and supercharger, rated altitude 3800 m.
 * A.74 R.C.42: With reduction gear and supercharger, rated altitude 4200 m.

Applications

 * CANSA FC.20
 * Fiat CR.42
 * Fiat G.50
 * Fiat RS.14
 * Ikarus Orkan
 * IMAM Ro.57
 * Macchi C.200