Nissan P engine

The Nissan P engine and its predecessors are large inline-six-cylinder engines manufactured by Nissan Diesel Motor Co., Ltd. from 1950 to 1983 and used in light-duty trucks by Nissan, as well as in the Nissan Patrol.

Nissan P engine
Overview
ManufacturerNissan Motors
Production1959-1983
Layout
ConfigurationInline-6
Displacement4.0 L (3,956 cc)
Cylinder bore85.7 mm (3.37 in)
Piston stroke114.3 mm (4.50 in)
ValvetrainOHV
Combustion
Fuel systemCarburetor
Cooling systemWater cooled
Output
Power output92 kW (125 PS; 123 hp)
99 kW (135 PS; 133 hp)
107 kW (145 PS; 143 hp) (after 1965)
Chronology
PredecessorNissan NC engine


NAK

Introduced in 1950, this is a 3.7L gasoline inline six-cylinder engine which produces 75 hp (56 kW; 75 hp).

Applications:

  • Nissan 290 bus
  • 1950 Nissan Patrol 4W70
  • 1951 Nissan Patrol 4W60

NB

Introduced in 1955, this is a 3.7L petrol inline six-cylinder engine which produces 92 hp (69 kW; 92 hp)

Applications:

  • 1955 Nissan Patrol 4W61

NC

Introduced in 1955, this is a 4.0 L (3,956 cc), sidevalve petrol inline six-cylinder which produces 80 PS (59 kW; 79 hp) or 105 PS (77 kW; 104 hp) at 3,400 rpm. Bore and stroke are 85.7 mm × 114.3 mm (3.37 in × 4.50 in). It was used in various buses and trucks as well as in early Nissan Patrols.[1]

Applications:

  • 1955 Nissan 482 Truck[2]
  • 1955 Nissan 492 Bus[2]
  • 1955-1957 Nissan 580 Truck
  • 1958-1959 Nissan 582 Truck
  • 1955-1957 Nissan 590 Bus
  • 1958-1959 Nissan 592 Bus
  • 1955-1959 Nissan Carrier 4W72
  • 1956-1959 Nissan Cabstar E590
  • 1956-1959 Nissan Patrol 4W65

P

The P is a gasoline-powered, overhead valve 4.0 L (3,956 cc) inline six-cylinder[1] with 125 PS (92 kW; 123 hp) at 3,400 rpm initially. Bore and stroke are 85.7 mm × 114.3 mm (3.37 in × 4.50 in).[1] Later with 135 PS (99 kW; 133 hp), further modifications in 1965 increased the power to 145 PS (107 kW; 143 hp). Later variants were called P40, reflecting the engine displacement in liters (4.0).

Applications:

References
  1. Ozeki, Kazuo (2007). 日本のトラック・バス 1918~1972 [Japanese Trucks and Buses 1918-1972] (in Japanese). Tokyo: Miki Press. p. 84. ISBN 978-4-89522-494-9.
  2. Ozeki, Japanese Trucks and Buses 1918-1972, p. 112
  3. Ozeki, Japanese Trucks and Buses 1918-1972, p. 102
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