Nissan H engine

Nissan H engine
Nissan H engine
Overview
Manufacturer	Nissan Motors
Production	1954-2003
Layout
Configuration	Inline-4 & Inline-6
Displacement	1.5–3.0 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 block material	Cast iron
Cylinder head material	Cast iron; Aluminum (later versions);
Valvetrain	OHV; SOHC (U20);
Compression ratio	8.0:1-9.0:1
Combustion
Fuel system	Carburetor
Fuel type	Gasoline
Cooling system	Water-cooled
Output
Power output	50–152 PS (37–112 kW; 49–150 hp)
Torque output	159–221 N⋅m (117–163 lb⋅ft)
Chronology
Predecessor	Nissan G engine

The Nissan H series of automobile engines is an evolution of the Nissan "R" engine which was based on the 1.5-liter, three-main bearing "G" engine used in the 1960s. Both inline-four and inline-six versions 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)