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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 ...
The following is a list of Porsche vehicles, ... Porsche 917 Porsche 936 Porsche 935/77 2.0 Porsche 935/78 Porsche 956 Porsche 962; 1968. 1969–1981. 1968–1973.
Overview. The engine was designed by chief engineer Hans Mezger under the leadership of Ferdinand Piëch and Helmuth Bott. [9] 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 ...
The "Can-Am killer", Porsche 917–30, on display at the Porsche Stuttgart-Zuffenhausen Museum, Germany Porsche, Penske, and Donohue quickly started the development of the 917-30 , complete with a reworked aerodynamic "Paris" body and a 5.4-liter turbocharged flat-12 engine whose output could be adjusted from about 1,100 to 1,500 bhp [ citation ...
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The best Porsche 907 finished 5th, beaten only by Ford and Ferrari with their much bigger engines. As the record-breaking performances of the 7.0l V8-powered Ford had triggered rumors about a future rule change, Porsche started to prepare themselves in summer of 1967. The 907 was equipped with the 270 hp 2200cc Type 771/1 8-cyl which was then ...
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The 1971 24 Hours of Le Mans was the 39th Grand Prix of Endurance, and took place on 12 and 13 June 1971. It was the ninth round of the 1971 International Championship for Makes . This year would be the swansong of the mighty 5-litre engines – the incoming regulations would put a 3-litre limit on engine capacity for Group 5 Sports Cars.