1970 Porsche 917 Langheck Specifications
4.5 L Flat 12 Engine Spec
| type | Racing Car |
| built at | Germany |
| engine |
Air Cooled 912.10 Flat-12 w/Dry Sump Lubrication
|
| position | Mid, Longitudinal |
| aspiration | Natural |
| ignition |
Twin Spark, Dual 12V Distributors
|
| block material |
RZ5 Magnesium Alloy w/Chromal Cylinders, Aluminum Alloy Cylinder Heads
|
| valvetrain |
Gear Driven DOHC, 2 Valves per Cyl
|
| fuel feed | Bosch Fuel Injection |
| displacement | 4494 cc / 274.24 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 |
| 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
|
| 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 lbs |
| wheelbase | 2300 mm / 90.6 in |
| front track | 1564 mm / 61.6 in |
| rear track | 1584 mm / 62.4 in |
| length | 4660 mm / 183.5 in |
| width | 2032 mm / 80.0 in |
| height | 940 mm / 37.0 in |
| transmission | 5-Speed Manual |
| tran clutch | 3-Disc Dry Clutch |
| fuel capacity | 120 litres or 31.68 gal. |
| top speed | 320 km/h (199 mph) |
4.9 L Flat 12 Engine Spec
| type | Racing Car |
| built at | Germany |
| engine |
Air Cooled 912.10 Flat-12 w/Dry Sump Lubrication
|
| position | Mid, Longitudinal |
| aspiration | Natural |
| ignition |
Twin Spark, Dual 12V Distributors
|
| block material |
RZ5 Magnesium Alloy w/Chromal Cylinders, Aluminum Alloy Cylinder Heads
|
| valvetrain |
Gear Driven DOHC, 2 Valves per Cyl
|
| fuel feed | Bosch Fuel Injection |
| displacement | 4,907 cc / 299.4 cu in |
| bore | 86.0 mm (3.4 in) |
| stroke | 70.4 mm (2.8 in) |
| compression | 10.5:1 |
| engine designer | Hans Mezger |
| power |
600 bhp / 448 kW @ 8,300 rpm
|
| specific output | 122 bhp per litre |
| torque |
563 Nm / 415 ft lbs @ 6,400 rpm
|
| body / frame |
Polyester & Fiberglass Panels over Tubular Aluminum Alloy Frame
|
| driven wheels | RWD |
| 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
|
| 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 | 927 kilo / 2,044 lbs |
| wheelbase | 2300 mm / 90.6 in |
| front track | 1564 mm / 61.6 in |
| rear track | 1584 mm / 62.4 in |
| length | 4660 mm / 183.5 in |
| width | 2032 mm / 80.0 in |
| height | 940 mm / 37.0 in |
| transmission | 5-Speed Manual |
| tran clutch | 3-Disc Dry Clutch |
| fuel capacity | 120 litres or 31.68 gal. |
| top speed | 386 km/h (240 mph) |
