| Toyota U engine | |
|---|---|
 | |
| Overview | |
| Manufacturer | Toyota |
| Production | 1961–1976 2012–2021 |
The Toyota U engine is a series of flat engines produced by Toyota. The original version of this engine was produced in the 1960s and 1970s in flat-twin configuration. The engine series was extended in 2012 for the engine derived from the Subaru flat-four for the Toyota 86.
| U | |
|---|---|
| Overview | |
| Manufacturer | Toyota |
| Production | 1961–1966 |
| Layout | |
| Configuration | Flat-2 |
| Displacement | 697 cc (43 cu in) |
| Cylinder bore | 78 mm (3.071 in)[1] |
| Piston stroke | 73 mm (2.874 in) |
| Combustion | |
| Cooling system | Air-cooled |
| Output | |
| Power output | 28–32 PS (21–24 kW)[2] |
| Torque output | 5.4 kg⋅m (53.0 N⋅m) |
The 697 cc U was produced from 1961 through 1966. The power was increased from 28 to 32 PS (21 to 24 kW; 28 to 32 hp) from engine number U-184170 onwards. It was exclusively installed in the Toyota Publica family of vehicles.
| 2U | |
|---|---|
| Overview | |
| Manufacturer | Toyota |
| Production | 1965–1976 |
| Layout | |
| Configuration | Flat-2 |
| Displacement | 790 cc (48 cu in) |
| Cylinder bore | 83 mm (3.268 in) |
| Piston stroke | 73 mm (2.874 in) |
| Combustion | |
| Cooling system | Air-cooled |
The 790 cc 2U was produced from 1965 through 1969, while the similar 2U-B was produced from 1966 through 1976. Output for the 2U-B when fitted to the Publica is 49 PS (36 kW; 48 hp) at 5,400 rpm. When installed in the Toyota MiniAce (UP100) minitruck and bus series, the engine only produces 36 PS (26 kW)[3] at 4,600 rpm. This version has an 8.2:1 compression ratio.[4] The 2U-C used in some models of the Publica 20 series produced 40 PS (29 kW; 39 hp) at 5,000 rpm.[5] It was also installed in the Publica-derived sports car, called the Toyota Sports 800.
| 4U | |
|---|---|
 | |
| Overview | |
| Manufacturer | Subaru |
| Also called | FA20D |
| Production | 2012–2021 |
| Layout | |
| Configuration | Flat-4 |
| Displacement | 2.0 L; 121.9 cu in (1,998 cc) |
| Cylinder bore | 86 mm (3.39 in) |
| Piston stroke | 86 mm (3.39 in) |
| Compression ratio | 12.5:1 |
| Combustion | |
| Fuel system | Direct injection and Multi-Port injection |
| Fuel type | Gasoline |
| Cooling system | Water-cooled |
| Output | |
| Power output | 200 PS (147 kW; 197 hp) |
| Torque output | 205 N⋅m (151 lb⋅ft) |
| Chronology | |
| Successor | FA24D |
|
See also: Subaru FA engine |
Appearing in the Toyota 86 (also known as the Toyota GT 86 in Europe, Scion FR-S in the US and Subaru BRZ), the 4U-GSE is a boxer type engine with four cylinders and a bore and stroke of 86 mm (3.39 in). The engine is a Subaru designed-and-built flat-four engine called the FA20D, with a Toyota engine code. The engine is built at Subaru's Oizumi Plant in Ota, Gunma. It features Toyota's D4-S direct and port injection systems, with a maximum power rating of 200 PS (147 kW; 197 hp) at 7000 rpm and a maximum torque rating of 205 N⋅m (151 lb⋅ft) at 6600 rpm. The compression ratio is 12.5:1.[6] In 2016, for the 2017 model year, power was increased to 208 PS (153 kW; 205 hp) when equipped with a manual transmission.[7]
The 4U-GSE was discontinued in 2021, following the introduction of the second-generation Toyota 86 (also known as the Toyota GR86) and Subaru BRZ, which uses a 2.4-liter FA24D. Unlike the FA20, it does not use a Toyota engine code.
