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Reciprocating internal combustion engine
Nissan S20 engine
Overview
Manufacturer
Nissan Motors
Designer
Yuji Sakakibara
Production
1968-1973
Layout
Configuration
Straight-6
Displacement
2.0 L; 121.4 cu in (1,990 cc)
Cylinder bore
82 mm (3.23 in)
Piston stroke
62.8 mm (2.47 in)
Valvetrain
DOHC 4 valves × cyl.
Valvetrain drive system
Timing chain
Combustion
Fuel system
3× Mikuni-Solex N40PHH-A24 carburetors Lucas mechanical fuel injection
Fuel type
Gasoline
Cooling system
Water-cooled
Output
Power output
160 hp (119 kW; 162 PS)
Specific power
80.4 hp (60.0 kW; 81.5 PS) per liter
Torque output
177 N⋅m; 130 lbf⋅ft (18 kg⋅m)
Dimensions
Dry weight
199 kg (439 lb)
Chronology
Predecessor
Prince GR-8
The Nissan S20 engine 2.0 L (1,989 cc)[a] was a straight-6 four-valve DOHC internal combustion engine produced by Nissan from 1969 to 1973, originally designed by engineers of the former Prince. It was the first mass-produced Japanese engine with more than two valves per cylinder.
Essentially a revised production variant of the 1966 Prince GR-8 engine from Prince/Nissan's R380 racecar, it produces 160 hp (119 kW; 162 PS) at 7000 rpm and 177 N⋅m; 130 lbf⋅ft (18 kg⋅m) of torque at 5600 rpm and weighs 199 kg (439 lb). The S20 powered Nissan's Skyline GT-R (C10 and C110) and Fairlady Z432 models.
This engine is not to be confused with the unrelated SR20 (consisting of the SR20Di, SR20DE, SR20DET, SR20VE, and SR20VET engines), which were straight-4 DOHC petrol engines from the SR series used in other Nissan models.
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