Nissan S20 engine

Nissan S20 engine
This article incorporates information from the equivalent article on the Japanese Wikipedia.
Nissan S20 engine
1969 Nissan S20 engine left.jpg
Manufacturer Nissan Motors
Production 1968-1973
Predecessor Prince GR-8
Configuration I6
Displacement 2.0 L (120 cu in)
Cylinder bore 82 mm (3.2 in)
Piston stroke 62.8 mm (2.47 in)
Valvetrain DOHC
Fuel system Three Weber 40DCOE carbs
Lucas mechanical fuel injection (after 1969)
Power output 120 kW (160 hp)
Torque output 180 N·m (130 ft·lb)
Dry weight 199 kg (440 lb)
S20 Engine installed in C10 Skyline GT-R.

The Nissan S20 engine (1998 cc) was a straight-6, DOHC internal combustion engine produced by Nissan (designed by the former Prince engineers) in the 1970s. It was essentially the same as the 1966 Prince GR8 engine of Prince/Nissan's R380 racecar. It produces 160 hp (120 kW) @7000 rpm and 180 N·m (130 ft·lbf). The S20 weights 199 kg (439 lb).

The S20 powered Nissan's Skyline GT-R (C10 and C110) and Fairlady Z432 models

History

The S20 was one of the technical carryovers to the Nissan brand from Prince technology. The Skyline model, was built as a Prince car since the model's inception in the 1950s, received the new engine. The Skyline GT-B in 1969 saw the introduction of the PGC10 GT-R, followed by the KPGC10 GT-R with a shorter wheelbase and 2 fewer doors in 1970. This model would later win a 50 straight touring car victories. For 1972, Nissan introduced the C110 Skyline powered by the L series of engines. A small number of KPGC110 GT-R would be built utilizing the remainder of the S20s.

The S20 was later fitted to the Nissan Fairlady Z432, a sports racing model of the Nissan Fairlady Z (S30) model line.

The S20 features a dual overhead cam, cross flow head with four valves per cylinder, and hemispherical combustion chambers. Early versions were fed via triple Weber 40DCOE carbs; models after 1969 featured Lucas mechanical fuel injection. In racing trim, the fuel injected motors reportedly produced over 225 bhp (168 kW), with 250 bhp (190 kW) for larger tracks like Fuji Speedway.

S20 engine installed in Fairlady Z432

This engine was used in the following vehicles:


Engine specifications

  • DOHC 1989cc(2.0L) inline six-cylinder water-cooled gasoline engine
  • Bore x Stroke 82x62.8mm
  • Maximum output (gross) 160 hp (119 kW; 162 PS) @ 7000 rpm
  • Maximum torque (gross) 130 lb·ft (176 N·m) @ 5600 rpm
  • Solex Mikuni carburetor fuel supply system * x3 N40PHH
  • 4-valve lifter valve direct-driven
  • 06 liter oil capacity
  • dry weight 199 kg (439 lb)

See also



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