Nissan S20 engine
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|Nissan S20 engine|
|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 2 valves x cyl.|
|Fuel system||Three 40DCOE Weber carburetors|
Lucas mechanical fuel injection (after 1969)
|Power output||160 hp (119 kW; 162 PS)|
|Torque output||177 N⋅m; 130 lbf⋅ft (18 kg⋅m)|
|Dry weight||199 kg (439 lb)|
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) in the 1970s. 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 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 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 features a dual overhead cam, cross-flow head with four valves per cylinder, and pent-roof combustion chamber. Early versions were fed via triple 40DCOE Weber carburetors; 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 (186 kW) for larger tracks like Fuji Speedway.
This engine was used in the following vehicles:
- Skyline GT-R (PGC10 type) 4-door sedan 1969 - 1970. (832 units)
- Skyline GT-R (KPGC10 type) 2-door coupe 1970 - 1972. 70 mm (2.8 in) shorter wheelbase than the PGC10. (1,197 units)
- Skyline GT-R (KPGC110 type) January–April 1973. (197 units)
- Fairlady Z432 (PS30) 1969 - 1972
- Fairlady Z432R (PS30SB) Z432 race car based nearly 100 kg (220 lb) lighter than production Z432. (3 units)
- 1,990 cc (2.0 L; 121.4 cu in) water-cooled gasoline inline-six engine
- Bore x Stroke 82 mm × 62.8 mm (3.23 in × 2.47 in)
- Maximum output (gross) 160 bhp (119 kW; 162 PS) @ 7,000 rpm
- Maximum torque (gross) 177 N⋅m; 130 lbf⋅ft (18 kg⋅m) @ 5,600 rpm
- Mikuni-Solex 3-barrel carburetor fuel supply system * N40PHH
- DOHC 4 valves per cylinder, lifter valve direct-driven
- 06 liter oil capacity
- dry weight 199 kg (439 lb)
- "1969 Nissan Skyline GT-R Hardtop C10". carfolio.com. Retrieved July 23, 2018.