Wikipedia

Nissan H engine

TheNissan H seriesofautomobileengines is an evolution of theNissan"R" engine which was based on the 1.5-liter, three-main bearing "G" engine used in the 1960s. Bothinline-fourandinline-sixversions were produced. It is a pushrod OHV design with iron block, early models with an iron head, later models with aluminum head. Versions of this motor have been used in many Nissan autos and forklifts, well into the eighties and a version called H20II was in production until 2003. The SD diesels are based on this series of motors (bore spacing and basic block layout)

Nissan H engine
Overview
ManufacturerNissan Motors
Production1954-2003
Layout
ConfigurationInline-4&Inline-6
Displacement1.5–3.0 L (1,489–2,974 cc)
Cylinder bore
  • 73 mm (2.87 in)
  • 85 mm (3.35 in)
  • 87.2 mm (3.43 in)
  • 92 mm (3.62 in)
Piston stroke
  • 66 mm (2.6 in)
  • 83 mm (3.27 in)
  • 89 mm (3.5 in)
  • 93 mm (3.66 in)
Cylinder blockmaterialCast iron
Cylinder headmaterial
Valvetrain
Compression ratio8.0:1-9.0:1
Combustion
FuelsystemCarburetor
Fuel typeGasoline
Cooling systemWater-cooled
Output
Power output50–152 PS (37–112 kW; 49–150 hp)
Torque output159–221 N⋅m (117–163 lb⋅ft)
Chronology
PredecessorNissan G engine

Inline-4

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1H

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The 1H is not related to the later H engines. It was also an all-iron, OHV engine, but this was a licensedBMC (Austin) B engine.With a bore and stroke of 73 mm × 89 mm (2.87 in × 3.50 in) it displaced 1.5 L (1,489 cc), power was 50 PS (37 kW; 49 hp) at 4,400 rpm in 1956, but this increased to 57 PS (42 kW; 56 hp) in August 1958.[1]The license agreement terminated in the late 1950s and the Nissan G engine was a more compact replacement, which in turn became replaced by the (below) Nissan H engines. The 1H would also be de-stroked from 89mm to 59mm to become the 1.0 L (990 cc) to create theNissan C engineat the suggestion of former Willys-Overland engineer Donald Stone.[2][3]

Applications:

H

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The basicHis a 1.9 L (1,883 cc) engine produced from 1962 for Nissan'sCedric.Bore and stroke was 85 mm × 83 mm (3.35 in × 3.27 in). The 8.0:1 compression version produced 92 hp (69 kW; 93 PS) and 159 N⋅m (117 lb⋅ft), while a high-compression engine (8.5:1) produced 95 hp (71 kW; 96 PS) and 163 N⋅m (120 lb⋅ft).

Applications:

H20

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TheH20is the most-common member of the family. Displacing 2.0 L (1,982 cc) thanks to a larger 87.2 mm (3.43 in) bore, H20 engines produced around 99 hp (74 kW; 100 PS) and 167 N⋅m (123 lb⋅ft).

Applications:

Also N230S, T40, forklifts and other machinery

H20P

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TheH20Pis the LPG-powered version of the H20.

Applications:

H25

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TheH25was developed as a high-output version of the H20. This engine was used in forklifts.

2.5 L (2,472 cc) bore x stroke: 92 mm × 93 mm (3.62 in × 3.66 in).

  • compression ratio 8.7:1
  • maximum output (gross) 62 bhp (46 kW; 63 PS) @ 3200 rpm
  • maximum torque (gross) 132 lb⋅ft (179 N⋅m; 18.2 kg⋅m) @ 1600 rpm

R (H16)

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TheRengine used essentially the same block as the H20, but a 17 mm (0.67 in) shorter piston stroke resulted in a capacity reduction of 387 cc (23.6 cu in). The R was later named H16. The "R" motor made the switch from 3 to 5main bearingsin 1967 for improved reliability, and the H20 was developed from this arrangement. The R/H16 bore and stroke is 87.2 mm × 66.8 mm (3.43 in × 2.63 in) displacing 1.6 L (1,595 cc). With 9.0:1 compression, the engine produced 96 hp (72 kW; 97 PS) and 103 lb⋅ft (140 N⋅m).

Applications:

U20

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The U20 was similar to the H20 but with an SOHC cylinder head for motorsports applications. Although Prince Motor Company is credited in many sources with designing the U20, it was actually designed in-house at Nissan by Kenichi Sasaki. The U20 was produced in two forms: a stock 135 hp (137 PS) version with twin SU carburetors, or a 150 hp (152 PS) version with twin Mikuni/Solex carburetors and a "B" model camshaft.

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Straight-6

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K

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TheKengine is a 2.8 L (2,825 cc)straight-6engine produced from 1963 to 1965. The K engine is an H engine with two extra cylinders. The K engine produced 118 hp (88 kW; 120 PS).

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H30

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TheH30is a 3.0 L (2,974 cc) straight-6 version produced from 1965. Output ranged from 120 to 130 PS (88 to 96 kW) and torque is 163 lb⋅ft (221 N⋅m). The H30 is an H20 with two extra cylinders.

Applications:

This engine is used in large forklifts

See also

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References

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  1. ^Ozeki, Kazuo (2007).Nhật Bản の トラック・バス 1918~1972[Japanese Trucks and Buses 1918-1972:] (in Japanese). Tokyo: Miki Press. pp. 98–99.ISBN978-4-89522-494-9.
  2. ^Halberstam, David (2012).The Reckoning.New York: Open Road Integrated Media.ISBN978-1453286104.
  3. ^Britain & Japan: biographical portraits. Vol. VI.Folkestone, UK: Global Oriental Ltd. 2007. p. 104-105.ISBN978-9004217850.
  4. ^Quattroruote: Tutte le Auto del Mondo 77/78(in Italian). Milano: Editoriale Domus S.p.A. 1977. pp. 554–556.
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