Alfa Romeo 8C
| Alfa Romeo 8C | |
|---|---|
Alfa Romeo 8C 2900A (1936)
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| Overview | |
| Manufacturer | Alfa Romeo |
| Production | 1931–1939 |
| Assembly | Portello, Milan, Italy |
| Body and chassis | |
| Class | Luxury car, Sports car, Racing car |
| Layout | FR layout |
| Powertrain | |
| Engine | 2.3 L 2336 cc I8 2.6 L 2556 cc I8 2.9 L 2905 cc I8 (road cars) |
| Alfa Romeo Monoposto Type C | |
|---|---|
Alfa Romeo 8C-35 Scuderia Ferrari
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| Overview | |
| Manufacturer | Alfa Romeo |
| Also called | Alfa Romeo 8C 35 |
| Production | 1935–1939 |
| Assembly | Italy |
| Designer | Vittorio Jano |
| Body and chassis | |
| Class | Racing car |
| Body style | Monoposto (single seat) open wheeler |
| Layout | Multi-plate clutch at engine, four-speed Stirnsi rear transaxle. |
| Platform | Light gauge welded box-section frame with all independent suspension |
| Powertrain | |
| Engine | Supercharged 3822 cc straight eight twin overhead cam |
| Transmission | Unsynchronised rear transaxle four-speed with reverse gear |
| Dimensions | |
| Wheelbase | 108.2 inches (2748.28 mm) |
| Length | 169.3 inches (4300 mm) including starting handle |
| Width | 34.0 inches (863.6 mm) cockpit |
| Height | 48.0 inches (1219.2 mm) cowl 52.0 inches (1320.8 mm) windscreen |
| Curb weight | 1646 lb (746.613 kg) unladen |
| Chronology | |
| Predecessor | Alfa Romeo Monoposto 8C Type B |
| Successor | Alfa Romeo Monoposto 12C 37 |
| Alfa Romeo 8C 2900 | |
|---|---|
1938 Alfa Romeo 8C 2900 B Lungo with Carrozzeria Touring Superleggera body
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| Overview | |
| Manufacturer | Alfa Romeo |
| Production | 1935–1938 |
| Assembly | Italy |
| Body and chassis | |
| Class | Sports car/Racing car |
| Body style | 2-seat roadster 2-seat coupe |
| Layout | Engine-mounted multi-plate clutch, rear transaxle. |
| Platform | Light gauge welded box-section frame with all independent suspension |
| Related | Alfa Romeo 8C 35 |
| Powertrain | |
| Engine | Supercharged 2,905 cc (177.3 cu in) DOHC straight-eight engine |
| Transmission | Unsynchronised four-speed rear transaxle with reverse gear |
| Dimensions | |
| Wheelbase | 2900A: 2,718 mm (107.0 in) 2900B Corto: 2,799 mm (110.2 in) 2900B Lungo: 3,000 mm (118.1 in) |
2nd place car in 1938 Mille Miglia, driven by Carlo Pintacuda.
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| Category | Sports car racing |
|---|---|
| Constructor | Alfa Romeo |
| Designer(s) | Engine: Vittorio Jano Body: Carrozzeria Touring |
| Predecessor | Alfa Romeo 8C 2900A |
| Technical specifications | |
| Chassis | Light gauge welded box-section frame |
| Suspension (front) | Trailing arms, coil springs, telescopic shock absorbers in oil-filled cylinders |
| Suspension (rear) | Swing axles located by radius arms and transverse leaf spring, telescopic shock absorbers |
| Length | 176.4 in (448.1 cm) |
| Height | 42.2 in (107.2 cm) at cowl, 48.0 in (121.9 cm) at windscreen |
| Axle track | 53.1 in (134.9 cm) front and rear |
| Wheelbase | 110.2 in (279.9 cm) |
| Engine | Alfa Romeo 8C 2900 2,905 cc (177.3 cu in) Straight-8 Twin Roots superchargers front-mounted, behind rear axle |
| Transmission | four-speed + reverse unsynchronised manual rear transaxle |
| Weight | 1,250 kg (2,755.8 lb) |
| Tyres | 5.5-inch (140 mm) Pirelli Corsa front and rear |
| Competition history | |
| Notable entrants | Alfa Corse |
| Notable drivers |
Clemente Biondetti Carlo Maria Pintacuda Giuseppe Farina Eugenio Siena Francesco Severi |
| Debut | 1938 Mille Miglia |
The Alfa Romeo 8C was originally a range of Alfa Romeo road, race and sports cars of the 1930s. In 2004 Alfa Romeo revived the 8C name for a V8-engined concept car which made it into production for 2007, the 8C Competizione.
The 8C designates 8 cylinders, and originally a straight 8-cylinder engine. The Vittorio Jano designed 8C was Alfa Romeo's primary racing engine from its introduction in 1931 to its retirement in 1939. In addition to the two-seater sports cars it was used in the world's first genuine single-seat Grand Prix racing car, the Monoposto 'Tipo B' - P3 from 1932 onwards. In its later development it powered such vehicles as the twin-engined 1935 6.3-litre Bimotore, the 1935 3.8-litre Monoposto 8C 35 Type C, and the Alfa Romeo 8C 2900B Mille Miglia Roadster. It also powered top-of-the-range coach-built production models, including a Touring Spider and Touring Berlinetta.
In 1924, Vittorio Jano created his first straight-eight-cylinder engine for Alfa Romeo, the 1987 cc P2, with common crankcase and four plated-steel two-cylinder blocks, which won the first World Championship ever in 1925. Although it was a straight-8, the 8C designation was not used.
The 8C engine, first entered at the 1931 Mille Miglia road race through Italy, had a common crankcase, now with two alloy four-cylinder blocks, which also incorporated the heads. The bore and stroke (and hence rods, pistons and the like), were the same as the 6C 1750 (bore: 65 mm, stroke: 88 mm 2,336 cc). There was no separate head, and no head gasket to fail, but this made valve maintenance more difficult. A central gear tower drove the overhead camshafts, superchargers and ancillaries. As far as production cars are concerned, the 8C engine powered two models, the 8C 2300 (1931–1935) and the even more rare and expensive 8C 2900 (1936–1941), bore increased to 68 mm and stroke to 100 mm (2,905 cc).
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