Nissan SD engine

The SD engine was replaced by the Nissan RD engine.

Straight 4

SD20

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.^[1] It was first seen in June 1964, when it was fitted to the QGS31 Nissan Cedric.

SD22

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.^[1] 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 from1980 through 1983, where it produced 61 hp (45 kW) (SAE) at 4,000 rpm. Like its lesser SD20 sister (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:

• 1964 Nissan Caball QC141, QC142
• 1964-1970 Nissan Junior Q40/41
• 1970-1982 Nissan Junior 140-series
• 1977-? Nissan Cedric 330-series

SD23

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&nnsp;mm. It produces 73 SAE hp at 4,300 rpm^{[verification needed]} and was fitted to the Nissan 720 and D21 Pickups, as well as the E23 Nissan Urvan. 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.

SD25

The 2.5 L (2,488 cc) SD25 is the biggest version of the four-cylinder SD series, with the larger bore and stroke of 89.0 and 100.0 mm. It was fitted to Nissan 720 pickup trucks 1983 through 1986 and D21 Nissan pickups (only 1987 in Canada). It was also fitted to the Nissan Urvan and Cabstar. Featured five main bearing crankshaft & redesigned rear main seal.

Straight 6

SD33

The SD33 is a 3.3L (3,246 cc/198.1 cu in) Straight 6 diesel engine, most known for its use in the Nissan Patrol MQ (160 series) from 1980-1983^[2] and the Nissan C80. The SD33 produces 98 hp.

The Engine was also used in the UD 3400 series light truck, large forklifts, Marine applications, in International Scout offerings from 1976 to 1979,as well as Jeep CJ-10 and Cj-10a flightline tow vehicles from 1985 to 1986.

SD33T

The SD33T is the Turbocharged version of the SD33 engine and was used in 1980 for the powerplant in 6400 International Harvester Scout II's. All were equipped with a T-19 manual transmission. From July 1983-1987 SD33T engines were fitted to the Nissan Patrol MK (160 series - model 2).

References

1. ^ ^{a b} Büschi, Hans-Ulrich, ed (March 10, 1983). Automobil Revue '83. 75. Berne, Switzerland: Hallwag, AG. p. 411. ISBN 3-444-06065-3. 
2. ^ Nissan Patrol model 160&61 Series Workshop Manual

See also

• List of Nissan engines