Toyota U engine

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 2011 for the engine derived from the Subaru flat-four for the Toyota 86.

Toyota U engine
Overview
ManufacturerToyota
Production1961-1976
2011-present

U
U
Overview
ManufacturerToyota
Production1961-1966
Layout
ConfigurationFlat-2
Displacement697 cc (43 cu in)
Cylinder bore76 mm (2.992 in)
Piston stroke73 mm (2.874 in)
Combustion
Cooling systemAir-cooled
Output
Power output28–32 PS (21–24 kW)[1]
Torque output5.4 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
2U
Overview
ManufacturerToyota
Production1965-1976
Layout
ConfigurationFlat-2
Displacement790 cc (48 cu in)
Cylinder bore83 mm (3.268 in)
Piston stroke73 mm (2.874 in)
Combustion
Cooling systemAir-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)[2] at 4,600 rpm. This version has an 8.2:1 compression ratio.[3] The 2U-C used in some models of the Publica 20 series produced 40 PS (29 kW; 39 hp) at 5,000 rpm.[4] It was also installed in the Publica-derived sports car, called the Toyota Sports 800.

4U
4U
Overview
ManufacturerSubaru
Production2012-present
Layout
ConfigurationFlat-4
Displacement2.0 L; 121.9 cu in (1,998 cc)
Cylinder bore86 mm (3.39 in)
Piston stroke86 mm (3.39 in)
Compression ratio12.5:1
Combustion
Fuel systemDirect injection and Multi-Port injection
Fuel typeGasoline
Cooling systemWater-cooled
Output
Power output200 PS (147 kW; 197 hp)
Torque output205 N⋅m (151 lb⋅ft)
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, the FA20, 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.[5] In 2016, for the 2017 model year, power was increased to 208 PS (153 kW; 205 hp) when equipped with a manual transmission.[6]

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See also

References
  1. Publica parts catalogue. Toyota.
  2. Toyota Commercial Cars (Catalog), Toyota, 1969, p. 6
  3. News from Toyota (PDF) (Press Release) (in Japanese), Toyota Motor Co., 1967-11-06
  4. Publica models UP20,20-F,20-KS,20S parts catalogue. Toyota. 1969. No.53114-69.
  5. "86 スペック" [86 Specs]. Toyota Japan. Archived from the original on 2012-04-15. Retrieved 2012-03-30.
  6. Jacquot, Josh (October 2016). "2017 Subaru BRZ Manual". Car and Driver. US: Hearst Communications, Inc. Retrieved 2017-11-21.


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