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  2. Porsche 917 - Wikipedia

    en.wikipedia.org/wiki/Porsche_917

    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 ...

  3. Porsche flat-twelve engine - Wikipedia

    en.wikipedia.org/wiki/Porsche_flat-twelve_engine

    The further evolution of the 917, the 917/30 with revised aerodynamics, a longer wheelbase and an even stronger 5.4-liter engine with around 1,100 horsepower (820 kW) in race trim, won the 1973 edition winning all races but two when Charlie Kemp won the Mosport race and George Follmer won Road Atlanta and Mark Donohue won the rest.

  4. 1970 24 Hours of Daytona - Wikipedia

    en.wikipedia.org/wiki/1970_24_Hours_of_Daytona

    The 1970 24 Hours of Daytona was an endurance race at the 3.8 mile road circuit at the Daytona International Speedway, Daytona Beach, Florida, USA that took place on January 31 and February 1, 1970.

  5. 1971 24 Hours of Le Mans - Wikipedia

    en.wikipedia.org/wiki/1971_24_Hours_of_Le_Mans

    The race winning Porsche 917K of Helmut Marko and Gijs van Lennep 1971 Le Mans Porsche 917LH driven by Derek Bell & Jo Siffert parked outside the Hotel de France. The ACO received 80 entries for the race, which it reduced to 63 for qualifying, though only 53 cars arrived to practice. [8]

  6. How an 18-cylinder engine and the Porsche 917 shaped the ...

    www.aol.com/news/18-cylinder-engine-porsche-917...

    On the surface, Volkswagen's resurrection of Bugatti looks like one of the many chess-like moves made in its bold quest to expand its portfolio of brands during the late 1990s. Bugatti opened its ...

  7. Mark Donohue - Wikipedia

    en.wikipedia.org/wiki/Mark_Donohue

    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 ...

  8. 1970 12 Hours of Sebring - Wikipedia

    en.wikipedia.org/wiki/1970_12_Hours_of_Sebring

    With the 1969 to 1971 rules allowing sportscars with 5-litre-engines if at least 25 were made, which did Porsche early in 1969 with the Porsche 917 and Ferrari late in the year with the Ferrari 512S, up to 50 V12-powered race cars were available for the 1970 World Sportscar Championship endurance racing season, entered either by factory-backed teams, or by independent customers if they could ...

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