Nissan S20 engine
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Nissan S20 engine | ||
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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)
Essentially a revised production variant of the 1966
This engine is not to be confused with the unrelated SR20 (consisting of the
History
The S20 was one of the technical carryovers to the
The third generation Skyline was exhibited at the
Aside from its use in the PGC10/KPGC10 Skylines, the S20 also was fitted to the
In September 1972, Nissan introduced the fourth generation Skyline (chassis code C110) powered by the
Engine specifications
The S20 is an inline-six with a cast iron block and aluminum head, using a 7-bearing crankshaft. It features a
Compared to the preceding GR-8, the 82 millimetres (3.2 in) bore was retained but the stroke was reduced from 63 to 62.8 millimetres (2.48 to 2.47 in) in order to ensure that displacement would not exceed 2 litres if slight errors were made during manufacturing. In addition, the valvetrain was driven by timing chains, rather than gears.[2]
Most engines utilized triple
Parameter | Value | |
---|---|---|
Type | inline-six engine
| |
Displacement | 1,990 cc (2.0 L; 121.4 cu in) | |
Bore × Stroke | 82 mm × 62.8 mm (3.23 in × 2.47 in) | |
Valvetrain | ||
Fuel system | Triple carburetors
|
fuel injection |
Power (gross) | 160 bhp (119 kW; 162 PS) @ 7,000 rpm | 227 bhp (169 kW; 230 PS) @ 8,400 rpm |
Torque (gross) | 177 N⋅m; 130 lbf⋅ft (18 kg⋅m) @ 5,600 rpm | ? |
Lubricating oil capacity | 6 L (1.3 imp gal; 1.6 US gal) | |
Dry weight | 199 kg (439 lb) |
As fitted to Shinohara's No. 39 racing car (1969), the S20 was tuned for higher output, generating 154 kW (209 PS; 207 bhp) at 8000 rpm and 196 N⋅m (20 kg⋅m; 145 lb⋅ft) at 6000 rpm.[14]
Applications
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.[2] (1,197 units)
- Skyline GT-R (KPGC110 type) January–April 1973. (197 units)[15]
- Fairlady Z432 (PS30) 1969 - 1972. (419 – 420 units)[7]
Motorsports
The first win for the S20-powered Skyline 2000GT-R was on May 3, 1969, at the TS-b race of the 1969 JAF Grand Prix held at Fuji Speedway, using the four-door PGC10;[4] the winning car (No. 39, driven by T.Shinohara) has been preserved in the Nissan Heritage Collection.[14] The racing saloons were joined by the hardtop coupe KPGC10 in March 1971 at the All Japan Suzuka Automobile Race.[4] The PGC10/KPGC10 went on to win 49 consecutive races held at Fuji, Suzuka, Tsukuba, and Hokkaido; although the streak ended after the 49th win on October 10, 1971, the GT-R won its next race for its 50th victory on March 20, 1972, also held at the Fuji Circuit.[4][16]
Compared to the Nissan L-series straight-six engines, the S20 was too small and too complex, despite it being a twin-cam with four valves per cylinder. In the 1970 All-Japan Fuji 1000km race, six Fairlady Z432R models with the S20 were entered, as well as one HS30 Fairlady 240Z with an L24. The L24-powered Fairlady 240Z won easily. Due to its simpler and more robust design, the L-series went on to become the most favored engine in motorsport and tuning,[17] while the S20 remains relatively obscure.
See also
Notes
References
- ^ a b "No. 052: Skyline 2000GT-R (1969: PGC10)". Nissan Heritage Collection. Retrieved 19 April 2021.
- ^ a b c d e f g h "【昭和の名機⑭ 最終回】ニッサンS20型は闘うために生まれた国内量産エンジン初の4バルブDOHC" [Showa's famous machine ⑭ final: Nissan S20 is the first 4-valve DOHC engine in Japan that was born to compete]. Motor Magazine (in Japanese). May 21, 2020. Retrieved 19 April 2021.
- ^ "No. 401: Skyline Hardtop 2000GT-R (1972: KPGC10)". Nissan Heritage Collection. Retrieved 19 April 2021.
- ^ a b c d "Eternal glory - Skyline GT-R's 50 wins". Nissan Global. Retrieved 19 April 2021.
- ^ "No. 221: Fairlady Z432 (1969: PS30)". Nissan Heritage Collection. Retrieved 19 April 2021.
- ^ a b Hsu, Ben (January 14, 2020). "MARKETWATCH: A Nissan Fairlady Z432-R has sold for over $800,000". Japan Nostalgic Car. Retrieved 19 April 2021.
- ^ a b c Strohl, Daniel (December 2, 2019). "When a single letter adds half a million dollars: Nissan Fairlady Z432R heads to auction". Hemmings. Retrieved 19 April 2021.
- ^ Hsu, Ben (March 8, 2011). "World's First Nissan Fairlady Z Newspaper Ad". Japanese Nostalgic Car. Retrieved 19 April 2021.
- ^ "No. 067: Skyline 2000GT-R (1972: KPGC110)". Nissan Heritage Collection. Retrieved 19 April 2021.
- ^ Wendler, Andrew (March 24, 2016). "Godzilla Invades NYC: Vintage Nissan Skyline GT-Rs at NYIAS". Car and Driver. Retrieved 19 April 2021.
- ^ "No. 068: Skyline 2000GT-R (1973: KPGC110)". Nissan Heritage Collection. Retrieved 19 April 2021.
- ^ "No. 069: Skyline 2000GT-R (1973: KPGC110)". Nissan Heritage Collection. Retrieved 19 April 2021.
- ^ "1969 Nissan Skyline GT-R Hardtop C10". carfolio.com. Retrieved July 23, 2018.
- ^ a b "No. 423: Skyline 2000GT-R (1969: PGC10)". Nissan Heritage Collection. Retrieved 19 April 2021.
- ^ Gilboy, James (December 21, 2020). "This Vintage Barn-Find Nissan Skyline GT-R Could Be Your Next Winter Project". The Drive. Retrieved 19 April 2021.
- ^ "Skyline 2000GT-R's "50 wins" list". Nissan Global. Retrieved 19 April 2021.
- ^ "L24 Battles Six S20's. Guess who wins?".
External links
- "蘇るS20" [Revived S20]. Vintage Car Yoshino (in Japanese). Detailed pictures of major components, taken during restoration.