PORSCHE 917/10 & 917/30
The
prototype version of the Porsche 917/10 at the Weissach test
track
in winter 1971/72with Mark Donohue sitting on the car and Roger
Penske,
engineer HelmutFlegl and Porsche competition director Rico
Steinemann
(from the left to the right).
The
1971 car of Jo Siffert had been brought to 1972 specification
for the use of Porsche test driver Willi Kauhsen.
The
spaceframe of the Porsche 917/10 was made out of magnesium. The
air-cooled 12 cylinder engine had got 4999 cc, two turbochargers
and about
950 horse powers. As typical for Porsche all engines were boxers.
The
Porsche 917/30 had been the most powerful car all over the world
before massive turbo power entered Grand Prix Racing in the
mid-eighties.
The car had got a 5.4 litre air-cooled boxer engine with up to
1.200 horse
powers.
In
1973 the Porsche 917/30 was entered by Team Penske, sponsored by
oil group Sunoco and exclusively driven by Mark Donohue winning
that
year´s CanAm championship with 6 victories to his credit.
Graphics: project * 2000
© 2002 by researchracing
