| 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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