Nissan RD engine


The Nissan RD engine series is the diesel version of the Nissan RB engine, using a single overhead cam, six-cylinder layout. It was the successor to the Nissan LD and SD engine|SD] six-cylinder engines and was joined by the six-cylinder Nissan TD engine.
From 1997 onwards, turbocharged versions were fitted with electronic fuel injection. The turbodiesel version is known as the RD28T and were also fitted to the Nissan Safari off-road vehicle.
The engine block was similar to the RB30 engine except it had more material, was heavier and had an 85 mm bore vs the 86 mm bore of the RB30 and a 83 mm rather than 85 mm stroke. One issue is that the stronger vibrations from the diesel engine could loosen the crank/harmonic balancer bolt which in turn loosens or falls 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

RD28 Series 1

  • 12 valves. When originally introduced, Japanese [Industrial Standards|JIS] gross power|gross] were used rather than JIS net, meaning that early information claims and at the same engine speeds.
  • at 4,800 rpm
  • at 2,400 rpm
Applications:
No PCV on the tappet cover.

RD28 Series 2

  • at 4,800 rpm
  • at 2,400 rpm
Applications:

RD28E

  • at 4,800 rpm
  • at 2,400 rpm
Applications:
Vacuum pump located on tappet cover.

RD28T

Applications:

RD28ETi1

Applications:

RD28ETi2