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Nissan S20 engine

From Wikipedia, the free encyclopedia

Nissan S20 engine
1969 Nissan S20 engine left.jpg
ManufacturerNissan Motors
DesignerYuji Sakakibara
Displacement2.0 L; 121.4 cu in (1,990 cc)
Cylinder bore82 mm (3.23 in)
Piston stroke62.8 mm (2.47 in)
ValvetrainDOHC 4 valves x cyl.
Fuel system3x Mikuni-Solex N40PHH-A24 carburetors
Lucas mechanical fuel injection
Fuel typeGasoline
Cooling systemWater-cooled
Power output160 hp (119 kW; 162 PS)
Specific power80.4 hp (60.0 kW; 81.5 PS) per liter
Torque output177 N⋅m; 130 lbf⋅ft (18 kg⋅m)
Dry weight199 kg (439 lb)
PredecessorPrince GR-8

The Nissan S20 engine 2.0 L (1,990 cc) was a straight-6, DOHC internal combustion engine produced by Nissan (designed by the former Prince engineers) from 1969 to 1973. It was essentially a revised production variant of the 1966 Prince GR8 engine from Prince/Nissan's R380 racecar. It produces 160 hp (119 kW; 162 PS) @ 7000 rpm and 177 N⋅m; 130 lbf⋅ft (18 kg⋅m) of torque @ 5600 rpm. The S20 weights 199 kg (439 lb).

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


S20 engine installed in Fairlady Z432
S20 engine installed in Fairlady Z432

The S20 was one of the technical carryovers to the Nissan brand from Prince technology. The Skyline model - 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 49 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 pent-roof combustion chamber. Most engines utilized triple Mikuni-Solex 40PHH dual-choke carburetors; models after 1969 offered optional Lucas mechanical fuel injection. In racing trim, the fuel-injected motors reportedly produced over 225 bhp (168 kW), with 250 bhp (186 kW) for larger tracks like Fuji Speedway.

This engine was used in the following vehicles:

Engine specifications

S20 Engine installed in C10 Skyline GT-R.
S20 Engine installed in C10 Skyline GT-R.

See also


  1. ^ "1969 Nissan Skyline GT-R Hardtop C10". Retrieved July 23, 2018.
This page was last edited on 13 December 2019, at 18:01
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