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The L20ET engine was developed to improve vehicle performance while cleaning up exhaust gases, improving fuel economy, and reducing noise.
It used a turbocharger (a supercharger with a turbine) to obtain levels of output and torque unobtainable by a conventional engine. The turbocharger took in exhaust gas energy with the turbine, causing the coaxial air compressor to rotate, and supplying more air than usual to the engine (supercharging). This output increase was not used for obtaining the type of super high performance of previous non-Japanese sports cars. Instead, although the displacement was small, a high final gear ratio was set by reducing the ratio so that exhaust gas purification, fuel economy improvement and low noise could be achieved while maintaining vehicle performance equivalent to a large displacement engine. |
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| Storage location | : | NISSAN MOTOR CO., LTD (Technical Center, 560-2 Okatsukoku, Atsugi-shi, Kanagawa-ken 243-0192) | |
| Year manufactured | : | 1979 | |
| Manufacturer | : | Nissan Motor Co., Ltd. | |
| Classification | : | Mass-production product | |
| Current status | : | Not open to the public (static) | |
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| Model / Manufacture |
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| Model | : | L20ET |  |
| Type | : | Gasoline | |
| Company name | : | Nissan Motor Co., Ltd. | |
| Location | : | 4F Design Building 1, Yokohama 3 District | |
| Installation model | : | Nissan Cedric Model 430 Minor | |
| Year of manufacture | : | 1979 |
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| Specification |
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| Cylinder arrangement, number of cylinders | : | Inline 6-cylinder | |
| Cycle / cooling method | : | 4/ | |
| Valve type / number | : | OHC/2-valve | |
| Combustion chamber | : | Wedge type | |
| Total displacement | : | 1998 cc | |
| Bore x stroke | : | 78.0×69.7 mm | |
| Compression ratio | : | 7.3 | |
| Mass (weight) | : | 200 kg | |
| Dimensions | : | 871×631×663 mm | |
| Ignition system | : | Spark ignition engine |
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| Performance |
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| Max. output | : | 145 ps/5600 rpm | |
| Max. torque | : | 21.0 kgm/3200 rpm | |
| Rate of fuel consumption | : | 205 g/psh/2400 rpm |
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| Points of interest, topicality | : | This high performance engine was the first in Japan to be equipped with a turbocharger. To secure the durability of the engine body due to the turbocharging, new technology was developed to reduce the thermal stress of parts, including the exhaust manifold. This allowed the acquisition of a large amount of knowledge on such systems. A turbo specification was added to the Fairlady Z for North America thereafter, marking the beginning of the turbo era. | |
| Features | : | ・Japan's first turbo engine | |
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