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The Porsche 917 is a sports prototype race car developed by German manufacturer Porsche to exploit the regulations regarding the construction of 5-litre sports cars. Powered by a Type 912 flat-12 engine which was progressively enlarged from 4.5 to 5.0 litres, the 917 was introduced in 1969 and initially proved unwieldy on the race track but continuous development improved the handling and it ...
Power came from a new 4.5-litre air-cooled engine designed by Mezger, which was a combination of 2 of Porsche's 2.25L flat-6 engines used in previous racing cars. The 'Type 912' engine featured a 180° flat-12 cylinder layout, twin overhead camshafts driven from centrally mounted gears and twin spark plugs fed from two distributors . [ 10 ]
1.17 Porsche 917. 1.18 Porsche 918. 1.19 Porsche 919 Hybrid (9R9) ... Porsche 986 engines Vehicle Engine MY Engine numbers Technical data [2] Boxster: M96.20: 1997: V ...
When the minimum number was lowered to twenty-five for 1969, the more modern Porsche 917 and Ferrari 512 were homologated and outran the older Lolas and Fords. Chevrolet powered coupes tended to not run as well in Europe as they did in North America. Some reliability problems arose when racing in Europe, mainly due to the grade of fuel allowed.
The domination of the Porsche 917 probably influenced Ferrari, because they switched from V12 engines to flat-twelve engines (using a boxer configuration) for the Ferrari 312 PB, which competed from 1971 to 1973. Alfa Romeo also used flat-twelve engines in the 1973-1976 Alfa Romeo 33TT12 and Alfa Romeo 33SC12 sports prototype racing cars.
Ferdinand Karl Piëch (1937-2019), a brilliant engineer who rose to the top of the Volkswagen Group during a long and illustrious career, sketched out an 18-cylinder engine in 1997, on the back of ...
The M4 was a roadster conceived between the end of 1969 and the beginning of 1970 coupling M3 chassis with a 5-liter Ford GT40 engine, [2] but development of this particular car was stopped once JWAE signed the agreement with Porsche to use their 917 for the 1970 season, [3] while in 1969 M5, a Formula Ford single seater, was built, [2] and ...
Rear mid-engine, rear-wheel drive roadster (Boxster) and fastback coupe (Cayman). ... Porsche 908 Spyder Porsche 917 Porsche 936 Porsche 935/77 2.0 Porsche 935/78 ...