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Porsche
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2002 Cayenne
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2000 Boxster
1999 6-cyl. Turbo
1999 6-cyl. engine
1997 Turbo Coupe
1997 911 GT 1
1993 911
1993 Turbo Cross Sect
1991 968
1989 911 Speedster
1986 959
1984 928 Study 50
1983 956 - 104
1981 924 Carrera GTS
1981 924 Carrera GTR
1981 944
1981 Aircraft engine
1979 924 Turbo
1978 928
1977 911 930 Turbo
1977 935
1977 936 Le Mans
1976 924
1973 911 G-Modell
1973 Carrera RS
1973 911 Targa
1971 917 Rosa Schwein
1971 Sixteencylinder
1971 Targa
1970 911 S Typ 915
1969 914
1969 914 (Eight cylinder)
1969 911
1967 907 Short Rear
1967 917
1967 911
1967 911 Targa
1966 First crashtests
1966 906 Carrera 6
1966 911 S
1965 912
1964 911
1964 904 Carrera GTS
1964 904
1963 911
1963 911 Motor
1963 Elva
1960 356 B
1960 356B 2000GS
1959 754
1959 356 B
1956 597 'Hunting car'
1956 356 Brake
1956 356 Engine
1953 550 Spyder

1950 356 SL
1948 First 356
1947 356 preparation
1947 Cisitalia
1922 Car Sascha
1898 Electric car
1897 Lohner-Porsche
Engine data


Porsche 917 K






Porsche 917 K
EngineFlat twelve-cylinder (2 flat six-cylinder)
Displacement4494/4907 cm³
Bore * stroke85/86 * 66/70,2 mm
Compression10,5 : 1
Engine controlDOHC, gear wheel drive
ValvesV-shape, 2 per cylinder
IgnitionDouble
Firing order1 9 5 12 3 8 6 10 2 7 4 11
CoolingBlower
Mixture preparationInjection pump, fuel delivery cone,
indirect
Torque500 Nm at 6800 rpm
Performance412/441 kW (560/600 bhp)
Rated speed8300/8500 rpm
Engine weight260 kg
DrivetrainMid-engine with rear drive
TransmissionThree-disc dry clutch
Gear boxFive-speed
BrakesDiscs, four piston per wheel,
internally ventilated
Tyres front11.30 - 12
Tyres rear13.50 - 15
Fuel tank120 liter
Kerb weight800 kg + driver
Wheel base2,10 m
LengthShort 4,29 m,
long 4,78 m
Top speedApprox. 310 - 350 km/h
Years of manufacture1969 - 1973


Many experts of the racing sport nominate the Porsche 917 as the racing car of the century. Porsche seizes the opportunity when at the end of the 60s suddenly engines of up to 5 liters of cubic capacity are possible, designing a level 12-cylinder. The extraordinary feature of the engine is that it does not deliver its torque - as usual - at the end, but in the middle, to a shaft, which runs below the engine towards the back. This as protection against too much torsion load.Thus, the engine might be fancied as two 6-cylinders set against each other at their respective flywheel side.

Above in the table only the data of the models 69/70 are noted. In the course of the car's career the 800 kW (1088 HP) are topped and the highest speed during a race is nearly 400 km/h. The 917 wins two-thirds of all its competitions. The competing Ferrari, Alfa and Matra were defeated. The 917, actually, was stopped only by new racing rules in 1973.

With extreme force one has completed until the last minute, the 25 cars required for homologation. They are thought for the now possible displacement class to 5 liter. Whether there are really still installed 'brake blocks made of wood', we leave open. After all the cars rigorously have been inspected at the opportunity.

The participating racers describe the car as initially not to control. Too unstable its driving behaviour. Herbert Linge says that the car have barely touched the ground at top speed. Only the legendary Gulf team makes with all kinds of aerodynamic know-how of drive the car mobile. Now, finally, the overall victory to be targeted, whereas before it concerns class wins. The engagement will be rewarded, however, in the following year with the desired Le Mans overall victory 1970. 01/10









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