Nissan RD engine
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The Nissan RD engine series is substantially similar in design to the Nissan RB engine series, except that it is a diesel engine. It is a single overhead cam engine with electronic fuel injection. These engines are usually found in the Nissan Laurel with a displacement of 2.8 L.
RD engine owners have been known to replace the cylinder head with a higher quality custom head to convert the engine to petrol, thus creating a 2.8 L petrol engine.