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Porsche 917 K-71 – Specifications & Performance

Technical Specifications

Porsche 917 KH Martini

1971 Porsche 917 Kurzheck Specifications

type Series Production Car
production years 1970 – 1971
released at 1969 Geneva Motorshow
built at German
body stylist Gerhard Schroeder
engineers Helmut Flegl, Paul Hensler
production 12
engine
Air Cooled 912.10 180 Flat-12 w/Dry Sump Lubrication
position Stressed Mid Longitudinal
aspiration Natural
ignition Twin Spark, Dual 12V Distributors
block material
RZ5 Magesiumn Alloy w/Chromal Cylinders
valvetrain Gear Driven DOHC, 2 Valves per Cyl
fuel feed
Indirect, Mechanical Bosch Fuel Injection
displacement 4494 cc / 274.25 in³
bore 85 mm / 3.35 in
stroke 66 mm / 2.60 in
compression 10.5:1
engine designer Hans Mezger
power 426.5 kw / 572 bhp @ 8400 rpm
specific output 127.28 bhp per litre
bhp/weight 715.0 bhp per tonne
torque 509.8 nm / 376 ft lbs @ 6800 rpm
body / frame
Polyester & Fiberglass Panels over Tubular Aluminum Alloy Frame
driven wheels RWD w/LSD
wheel type Cast Magnesium
front tires 4.75/11.30-15 Dunlop
rear tires 6.00/13.50-15 Dunlop
front brakes
Internally Vented Discs w/Dual-Circuit Calipers w/4-Piston Aluminum Calipers
rear brakes
Internally Vented Discs w/Dual-Circuit Calipers w/4-Piston Aluminum Calipers
front wheels F 38.10 x 22.86 cm / 15 x 12 in
rear wheels R 38.10 x 30.48 cm / 15 x 12 in
steering Rack & Pinion
f suspension
A-Arms & Control Arms w/Coil Springs, Bilstein Shocks
r suspension
Control Arms w/Coil Springs, Bilstein Shocks
curb weight 800 kg / 1764.00 lbs
wheelbase 2300 mm / 90.55 in
front track 1564 mm / 61.6 in
rear track 1584 mm / 62.4 in
length 4140 mm / 163.0 in
width 1975 mm / 77.8 in
height 920 mm / 36.22 in
transmission 5-Speed Manual
tran clutch 3-Disc Dry Clutch
top speed ~320 kph / 198.72 mph
fuel capacity 120 litres or 31.68 gal.
race victories 1OA Le Mans 1970, 1OA Le Mans 1971
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