Toyota U engine

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Toyota U engine
1961 Toyota U Type engine front.jpg
Overview
Manufacturer Toyota
Production 1961-1976
2011-present

The Toyota U family was a series of flat-twin engines produced in the 1960s and 1970s. The family was extended in 2011 for the engine derived from the Subaru flat-four for the Toyota 86.

U[edit]

U
Overview
Manufacturer Toyota
Production 1961-1966
Combustion chamber
Configuration Flat-2 air-cooled
Displacement 697 cc (43 cu in)
Cylinder bore 76 mm (2.992 in)
Piston stroke 73 mm (2.874 in)
Output
Power output 28–32 PS (21–24 kW)[1]
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[edit]

2U
Overview
Manufacturer Toyota
Production 1965-1976
Combustion chamber
Configuration Flat-2 air-cooled
Displacement 790 cc (48 cu in)
Cylinder bore 83 mm (3.268 in)
Piston stroke 73 mm (2.874 in)

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[edit]

4U
Overview
Manufacturer Subaru
Production 2012-present
Combustion chamber
Configuration Flat-4 water-cooled
Displacement 1,998 cc (122 cu in)
Cylinder bore 86 mm (3.386 in)
Piston stroke 86 mm (3.386 in)
Output
Power output 203 PS (149 kW; 200 hp)
Torque output 205 N·m (151 lb·ft)

Appearing in the Toyota 86 (also known as the Toyota GT 86 in Europe, Scion FR-S in the USA and Subaru BRZ), the 4U-GSE is a boxer type engine with four cylinders and a bore and stroke of 86 mm. 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 203 PS (149 kW; 200 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, power was increased to 208 PS (153 kW; 205 hp) when equipped with a manual transmission.[citation needed]

See also[edit]

References[edit]

  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. Retrieved 2012-03-30. 

External links[edit]