The Toyota U engine is a series of

flat engine A flat engine is a piston engine where the cylinders are located on either side of a central crankshaft. Flat engines are also known as horizontally opposed engines, however this is distinct from the less common opposed-piston engine design, ...

s produced by

Toyota is a Japanese multinational automotive manufacturer headquartered in Toyota City, Aichi, Japan. It was founded by Kiichiro Toyoda and incorporated on . Toyota is one of the largest automobile manufacturers in the world, producing about 10 ...

. The original version of this engine was produced in the 1960s and 1970s in

flat-twin A flat-twin engine is a two-cylinder internal combustion engine with the cylinders on opposite sides of the crankshaft. The most common type of flat-twin engine is the boxer-twin engine, where both pistons move inwards and outwards at the same ti ...

configuration. The engine series was extended in 2012 for the engine derived from the Subaru

flat-four A flat-four engine, also known as a horizontally opposed-four engine, is a four-cylinder piston engine with two banks of cylinders lying on opposite sides of a common crankshaft. The most common type of flat-four engine is the boxer-four engine, ...

for the

Toyota 86 The Toyota 86 and the Subaru BRZ are 2+2 sports cars jointly developed by Toyota and Subaru, manufactured at Subaru's Gunma assembly plant. The 2+2 fastback coupé has a naturally-aspirated boxer engine, front-engined, rear-wheel-drive confi ...

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U

The 697 cc U was produced from 1961 through 1966. The power was increased from from engine number U-184170 onwards. It was exclusively installed in the

Toyota Publica The is a small car manufactured by the Japanese automaker Toyota from 1961 until 1978. Conceived as a family car to fulfill the requirements of the Japanese Government's "national car concept", it was the smallest Toyota car during that period an ...

family of vehicles.

2U

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 at 5,400 rpm. When installed in the

Toyota MiniAce The Toyota MiniAce was a small utility vehicle built by Toyota from November 1967 until November 1975. It shared many parts with the Toyota Publica, especially the Publica P20 Pickup. In Japan, it was sold through the ''Toyota Corolla Store'' and ' ...

(UP100) minitruck and bus series, the engine only produces at 4,600 rpm. This version has an 8.2:1 compression ratio. The 2U-C used in some models of the Publica 20 series produced at 5,000 rpm. It was also installed in the Publica-derived sports car, called the

Toyota Sports 800 The is Toyota's first production sports car. The prototype for the Sports 800, called the Publica Sports, debuted at the 1962 Tokyo Auto Show, featuring a space age sliding canopy and utilizing the powertrain of the Publica 700, a Japanese marke ...

4U

Appearing in the

(also known as the Toyota GT 86 in Europe,

Scion FR-S The Toyota 86 and the Subaru BRZ are 2+2 sports cars jointly developed by Toyota and Subaru, manufactured at Subaru's Gunma assembly plant. The 2+2 fastback coupé has a naturally-aspirated boxer engine, front-engined, rear-wheel-drive c ...

in the US and

Subaru BRZ The Toyota 86 and the Subaru BRZ are 2+2 sports cars jointly developed by Toyota and Subaru, manufactured at Subaru's Gunma assembly plant. The 2+2 fastback coupé has a naturally-aspirated boxer engine, front-engined, rear-wheel-drive confi ...

), the 4U-GSE is a boxer type engine with four cylinders and a bore and stroke of . The engine is a

Subaru ( or ; ) is the automaker, automobile manufacturing division of Japanese transportation conglomerate (company), conglomerate Subaru Corporation (formerly known as Fuji Heavy Industries), the Automotive industry#By manufacturer, twenty-first ...

designed-and-built

flat-four engine A flat-four engine, also known as a horizontally opposed-four engine, is a four-cylinder piston engine with two banks of cylinders lying on opposite sides of a common crankshaft. The most common type of flat-four engine is the boxer-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 Direct may refer to: Mathematics * Directed set, in order theory * Direct limit of (pre), sheaves * Direct sum of modules, a construction in abstract algebra which combines several vector spaces Computing * Direct access (disambiguation), a ...

and port injection systems, with a maximum power rating of at 7000 rpm and a maximum torque rating of at 6600 rpm. The compression ratio is 12.5:1. In 2016, for the 2017 model year, power was increased to when equipped with a

manual transmission A manual transmission (MT), also known as manual gearbox, standard transmission (in Canada, the United Kingdom, and the United States), or stick shift (in the United States), is a multi-speed motor vehicle transmission (mechanics), transmission ...

. 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.

References

External links

Photo of the 2U engine

U Boxer engines Gasoline engines by model {{Automotive-part-stub

U

2U

4U

See also

References

External links