Alfa Romeo 8C

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. Spider 1937 in 2005 Pebble Beach Concours d'Elegance. 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). At the same time, since racing cars were no longer required to carry a mechanic, Alfa Romeo built the first single seater race car. As a first attempt, the 1931 Monoposto Tipo A used a pair of 6-cylinder engines fitted side by side in the chassis. Initially, Alfa Romeo announced that the 8C was not to be sold to private owners, but by autumn 1931 Alfa sold it as a rolling chassis in Lungo (long) or Corto (short) form with prices starting at over £1000. The chassis were fitted with bodies from a selection of Italian coach-builders (Carrozzeria) such as Zagato, Carrozzeria Touring, Carrozzeria Castagna, Carrozzeria Pinin Farina ( later Pininfarina ) and Brianza, even though Alfa Romeo did make bodies. Some chassis were clothed by coach-builders such as Graber, Worblaufen and Tuscher of Switzerland and Figoni of France. Alfa Romeo also had a practice of rebodying cars for clients, and some racing vehicles were sold rebodied as road vehicles. Some of the famous first owners include Baroness Maud Thyssen of the Thyssen family, the owner of the aircraft and now scooter company Piaggio Andrea Piaggio, Raymond Sommer, and Tazio Nuvolari. ==Models==

1931 8C 2300 The first model was the 1931 '8C 2300', a reference to the car's 2.3 L (bore: 65 mm, stroke: 88 mm, 2336 cc) engine, initially designed as a racing car, but actually produced in 188 units also for road use. While the racing version of the 8C 2300 Spider, driven by Tazio Nuvolari won the 1931 and 1932 Targa Florio race in Sicily, the 1931 Italian Grand Prix victory at Monza gave the "Monza" name to the twin seater GP car, a shortened version of the Spider. The Alfa Romeo factory often added the name of events won to the name of a car. 1931 8C 2300 Le Mans type . '8C 2300 tipo Le Mans' was the sport version of the '8C 2300' and it had a successful debut in the 1931 Eireann Cup driven by Henry Birkin. It won the 24 Hours of Le Mans in 1931 (Howe-Birkin); 1932 (Chinetti-Sommer); 1933 (Nuvolari-Sommer) and 1934 (Chinetti-Etancelin). The 8C 2300 Le Mans model on display at the Museo Alfa Romeo was bought by Sir Henry Birkin in 1931 for competition use, but it is not the car in which Birkin and Howe won the 1931 Le Mans 24 hours. A 1933 8C 2300 Le Mans, chassis #2311201, is part of the permanent collection at the Simeone Foundation Automotive Museum in Philadelphia, PA, US. The car was owned by Lord Howe who campaigned it in the 24 Hours of Le Mans in 1934 (DNF) as well as in 1935 when it set the fastest lap before retiring. 1933 8C 2600 In 1933 the supercharged dual overhead cam straight-8 engine, enlarged (bore: 68 mm, stroke: 88 mm, 2557 cc) to 2.6 litres ('8C 2600') for the Tipo B, was fitted to the Scuderia Ferrari 8C Monzas. Scuderia Ferrari had become the "semi-official" racing department of Alfa Romeo, who were no longer entering races as a factory effort due to the poor economic situation of the company. With the initial 215 hp of the 2.6 engine, the Monoposto Tipo B (P3) racer could accelerate to 60 mph (97 km/h) in less than 7 seconds and could eventually reach 135 mph (217 km/h). For 1934 the race engines became 2.9 litres. Tazio Nuvolari won the 1935 German GP at the Nürburgring at the wheel of a 3.2 L Tipo B against the more powerful Silver Arrows from Mercedes-Benz and Auto Union. 1935 Monoposto 8C 35 Type C Eight 3.8-litre versions, sharing no castings with the earlier blocks, were individually built for racing in five months, most being used in the Alfa Romeo Monoposto 8C 35 Type C, as raced by Scuderia Ferrari. (The P3 designation was dropped.) The capacity produced at 5500 rpm, and had from 900 rpm to 5500 rpm. It had 15.5-inch drum brakes all round, using Pirelli 5.25 or 5.50 x 19 tyres at the front and 7.00 or 7.50 x 19 tyres at the rear. Though not a match for the big Mercedes and Auto Union on the faster circuits, they came into their own on the tighter circuits and races. In 1936 Tipo Cs fitted with the troublesome V12 did not live up to expectations, and the 3.8 continued to be used. From 1933 Scuderia Ferrari had managed the racing, and the Ferrari prancing horse appeared on the flanks of the Bimotore, but Alfa Corse began to become more active, and Vittorio Jano went at the end of the 1937 season. which had been one of the early stars of racing at the Goodwood Motor Circuit 1948–55. 1935 Bimotore In 1935, to compete with Mercedes Benz and Auto Union, Enzo Ferrari (Race team manager) and Luigi Bazzi (Designer) built a racer with two 3.2-litre (bore: 71 mm, stroke: 100 mm, 3167.4 cc) engines, one in the front and one in the rear, giving 6.3 litres and . The drivetrain layout was unusual. The two engines were connected by separate driveshaft to a gearbox with two input shafts, and two angled output shafts, so each of the rear wheels had its own driveshaft. It could never quite succeed against the Mercedes W25 B of Rudolf Caracciola, the car handed very badly because of uneven weight distribution, thanks to one of the engines being behind the driver, and was hard on fuel and tyres. The gain in speed was offset by increased pit times. On May 12, 1935, two were entered in the Tripoli Grand Prix driven by Nuvolari and Chiron who finished fourth and fifth. Chiron managed a second at the following 1935 Avus race. On June 16, 1935, Nuvolari drove a specially prepared Bimotore from Florence to Livorno and set a new speed record with an average speed of over . After that it was sidelined in favour of the Tipo C. It was the first racer to use the Dubonnet independent trailing arm front suspension. The V12 was under development, but was not race ready. It was noticed that the Bimotore had a traction advantage on rough ground, so a version of the Bimotore chassis with the independent Dubonnet front end, and a new independent rear with swing axles with radius rods and a transverse leaf spring was used for the Tipo C 3.8s. 8C 2900 The 8C 2900 was designed to compete in sports car races in general and the Mille Miglia in particular. It used the 2.9 L (bore: 68 mm, stroke: 100 mm, 2905 cc) version of the 8C engine and was based on the 8C 35 Grand Prix racing chassis. As such, it had an inline 8-cylinder 2.9-litre engine using two Roots type superchargers fed by two updraught Weber carburettors The 2900B chassis was available in two wheelbases: the Corto (short) at , which was longer than the 2900A's wheelbase, and the Lungo (long) at . The wheels of the 2900B had 19-inch rims fitted with hydraulic drum brakes. Thirty-two 2900Bs were built in regular production, ten in 1937, and twenty-two in 1938. Another 2900B was assembled from parts in 1941. Most of these cars were bodied by Carrozzeria Touring, although a few were bodied by Pininfarina An 8C 2900 with Pininfarina cabriolet bodywork was auctioned for US$4,072,000 by Christie's at Pebble Beach, California. This was the tenth highest price ever paid for a car at auction at the time. 1938 8C 2900B Mille Miglia Roadster In 1938, Alfa Corse, an in-house racing team for Alfa Romeo, took over the activities of Scuderia Ferrari, along with many of their personnel, including Enzo Ferrari. Alfa Corse prepared four 8C 2900B Corto cars for the 1938 Mille Miglia. These used Carrozzeria Touring Superleggera roadster bodies. Three of these cars had their engines tuned to give , while the fourth, assigned to Biondetti, had an engine from an Alfa Romeo Tipo 308 Grand Prix car, which delivered The aerodynamic coupé was built by Carrozzeria Touring. In 1987, an Italian magazine had the car tested at the Pininfarina wind tunnel, where a Cx of 0.42 was measured, down to 0.37 with air intakes closed. The coupé, driven by Sommer and Biondetti, led for most of the race, but tyre trouble was then followed by a dropped valve. The car was driven to the pits, but had to retire there. At the time the valve dropped, the coupé had a lead of more than 160 km over the next car. This was the only time the coupé was raced by Alfa Corse. After the war, it was entered in minor races under private ownership, was then displayed at the Donington museum from the 1960s before being added in 1987 to the Alfa Romeo museum, which now runs it at many events. ==Technical data==