Ford Model A engine
| Ford Model A engine | |
|---|---|
| Overview | |
| Manufacturer | Ford Motor Company |
| Production | 1927–1931 |
| Layout | |
| Configuration | Inline-4 |
| Displacement | 200.5 cu in (3.3 L) |
| Cylinder bore | 3.876 in (98.45 mm) |
| Piston stroke | 4.125 in (104.8 mm) |
| Cylinder block material | Cast iron, monobloc design |
| Cylinder head material | Cast iron, detachable |
| Valvetrain | Side valve (flathead) |
| Compression ratio | 4.22:1 |
| Combustion | |
| Fuel system | Gravity feed, Zenith (predominantly) and other carburetors |
| Fuel type | gasoline |
| Oil system | gravity feed; dip-and-splash |
| Cooling system | Water-cooled, circulating pump and radiator |
| Output | |
| Power output | 40 hp (29.8 kW) brake |
| Specific power | 24.03 hp (17.9 kW) SAE |
| Torque output | 128 lb⋅ft (174 N⋅m) at 1,000 RPM |
| Dimensions | |
| Dry weight | approx. 350 lb (160 kg) with radiator and water |
| Chronology | |
| Predecessor | Ford Model T engine |
| Successor | Ford Model B engine |
The Ford Model A engine – primarily developed for the popular Ford Model A automobile (1927–1931, 4.8 million built) – was one of the most mass-produced automobile engines of the 1920s and 1930s, widely used in automobiles, trucks, tractors, and a wide variety of other vehicles and machinery.
A four-cylinder, carbureted, gasoline-fueled, piston engine, derived from the Ford Model T engine, the Ford Model A engine – with a bigger bore and stroke, and higher compression ratio – was twice as powerful as the Model T engine. Some derivatives, with improvements, were produced until 1958. Tens of thousands of the original design remain active even in the 21st century.