The Nissan RD engine series is basically a Nissan RB engine design, except that it is only a single overhead cam six-cylinder diesel engine. It was the successor to the Nissan LD and SD six-cylinder engines and was joined by the six-cylinder Nissan TD engine.

Nissan RD engine
RD28 series 1 in a C33 Nissan Laurel
Overview
ManufacturerNissan Diesel
Production1985-2009
Layout
ConfigurationStraight-6
Displacement2.8 L (2,826 cc)
Cylinder bore85 mm (3.35 in)
Piston stroke83 mm (3.27 in)
Valvetrain
  • SOHC 2 valves x cyl.
Combustion
TurbochargerWith intercooler on RD28T and RD28ET
Fuel systemMechanical fuel injection
Electronic fuel injection
Fuel typeDiesel
Cooling systemWater-cooled
Output
Power output94–145 PS (69–107 kW; 93–143 bhp)
Torque output18–29.3 kg⋅m (177–287 N⋅m; 130–212 lb⋅ft)
Chronology
PredecessorLD and SD

From 1997 onwards the turbocharged versions were fitted with electronic fuel injection. The turbodiesel version known as the RD28T (or RD28ET with electronic fuel injection) and were also fitted to the Nissan Safari (also known as the Nissan Patrol) off-road vehicle.

Since the Nissan RD engine is based on the Nissan RB engine, they have many similarities and many parts are interchangeable. The engine block was similar to the RB30 engine except it had more material, was heavier and had 85mm bore vs the 86mm bore of the RB30 and a 83mm stroke vs 85mm stroke. One issue is that the stronger vibrations from the diesel engine can loosen the crank/harmonic balancer bolt (originally from the RB engines) and in turn become loose or fall off causing major engine damage. It is recommended to use thread locking fluid when installing.

The cylinder head was of a non-crossflow design, meaning that the exhaust and intake ports were on one side of the cylinder head.

RD28

edit
  • 2.8 L (2,826 cc) SOHC, 85 mm (3.35 in) bore

RD28 Series 1

edit
  • 12 valves (two per cylinder). When originally introduced, JIS gross were used rather than JIS net, meaning that early information claims 100 PS (74 kW; 99 bhp) and 18.5 kg⋅m (181 N⋅m; 134 lb⋅ft) at the same engine speeds.[1]

94 PS (69 kW; 93 bhp) at 4,800 rpm
18 kg⋅m (177 N⋅m; 130 lb⋅ft) at 2,400 rpm

No PCV on the tappet cover.

RD28 Series 2

edit

100 PS (74 kW; 99 bhp) at 4,800 rpm
18.2 kg⋅m (178 N⋅m; 132 lb⋅ft) at 2,400 rpm

RD28E

edit

100 PS (74 kW; 99 bhp) at 4,800 rpm
18.2 kg⋅m (178 N⋅m; 132 lb⋅ft) at 2,400 rpm

Vacuum pump located on tappet cover.

RD28T

edit

125 PS (92 kW; 123 bhp) at 4,400 rpm
26 kg⋅m (255 N⋅m; 188 lb⋅ft) at 2,400 rpm

Nissan Safari Spirit series Y60 2-door soft-top 1996–1997

Nissan Civilian Bus

RD28ETi1

edit

135 PS (99 kW; 133 bhp) at 4,000 rpm
29.3 kg⋅m (287 N⋅m; 212 lb⋅ft) at 2,000 rpm

Nissan Safari Spirit series Y61 2-door soft-top 1997–1999 (automatic transmission)

RD28ETi2

edit

145 PS (107 kW; 143 bhp) at 4,000 rpm
26.6 kg⋅m (261 N⋅m; 192 lb⋅ft) at 2,000 rpm

See also

edit

References

edit
  1. ^ Büschi, Hans-Ulrich, ed. (5 March 1987). Automobil Revue 1987 (in German and French). Vol. 82. Berne, Switzerland: Hallwag AG. p. 428. ISBN 3-444-00458-3.
  2. ^ "Goo-net Catalog: Nissan Cedric Classic". Goo-net. Retrieved 2011-01-31.