Nissan SD engine

The SD engine was replaced by the Nissan TD engine. It was manufactured by Minsei Diesel Industries, Ltd., which was renamed Nissan Diesel Motor Co., Ltd in 1960.

The SD20 is a normally aspirated 2.0 L (1,991 cc) straight-four diesel engine with a bore and stroke of 83.0 and 92.0 mm. It had three main bearings. The Diesel versions of the Nissan Cedric in the 1960s until the early 1980s used this engine, which produces 60 PS (44 kW) at 4,000 rpm. It was first seen in June 1964, when it was fitted to the QGS31 Nissan Cedric.

The SD22 is a normally aspirated 2.2 L (2,164 cc) inline-four diesel engine. It is a stroked version of the smaller SD20 (83.0 x 100.0 mm bore and stroke). It produces 65 PS (48 kW) at 4,000 rpm as fitted to the 1983 430-series Nissan Cedric. It was first used in the 330-series Nissan Cedric from June 1977. It was also produced in a marine version MN 22 by Chrysler Marine under license during the 1980s.

The SD22 was used in the Datsun 720 pickup trucks from 1980 through 1983, where it produced 61 hp (45 kW) (SAE) at 4,000 rpm. Like its lesser SD20 relative (but unlike its SD33 six-cylinder derivative) it has three main bearings and was never available with turbocharging. In 1981, pistons were upgraded to a three ring piston with a steel compression ring carrier cast as part of the piston for improved durability.

The engine is popular in Australia utilized mostly as a reliable pump for remote livestock stations. The engine may still by manufactured and imported by JESCO in California. JESCO also supplies parts. The marine version, using a water-cooled exhaust manifold and expansion tank is also still available from other manufacturers.

Applications:

The SD23 is a 2.3 L (2,289 cc) straight four diesel engine with eight valves (two per cylinder), and a distributor type injection pump. It is a bored out version of the SD20, with a bore and stroke of 89.0 x 92.0 mm. It produces 74 PS (54 kW; 73 hp) SAE net at 4,300 rpm and was fitted to the Nissan 720 and D21 Pickups, as well as the E23 Nissan Urvan and export market Y30-series Cedrics. The engine has also been used in many other functions, for forklifts, marine, and stationary applications. Unlike the smaller engines, the SD23 received a five bearing crankshaft. The European-spec version claimed 50 kW (68 PS), as fitted to the 1985 Urvan.

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Wikipedia