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Nissan Z engine

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The Nissan Z series of engines ranged from 2.0 L to 2.4 L and were produced from 1979 through August 1989. The Z series engines retained a nearly identical block to the earlier Nissan L engine with the exception of the Z24 which utilized a taller deck height to increase engine displacement. The most notable feature of the Z-Series engine was the introduction of the crossflow cylinder head which increased performance and reduced emissions by moving the intake ports to the right side of the vehicle opposite the exhaust ports. This change allows the fuel air mixture to more easily enter the combustion chamber and also allows the exhaust port velocity to more effectively scavange the cylinder and reduce reversion pulses.

Z20SEdit

The Z20S is a 2.0 L (1952 cc) engine produced from 1979 through 1986. It was produced in 2-bolt and 3-bolt versions.

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Z20EEdit

The Z20 was fuel injected to become the Z20E and produced from 1979 through July 1981.

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Z22SEdit

The Z22S is a 2.2 L (2187 cc) engine produced from 1981 through 1982. It was always carbureted.

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Z22EEdit

The Z22E is a 2.2 L (2187 cc) engine produced from 1981 through 1982. It was always fuel injected.

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Z24Edit

The Z24 is a 2.4 L (2389 cc) carburetor engine produced from 1984 through mid 1986 and only used on the 720 trucks]] . A fuel injected (throttle body) Z24i version was produced starting in April of 1986 for use on the next generation trucks, the 1986 1/2 D-21 Hardbody and the first year 1987 WD-21 Pathfinder.

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