Porsche Type 911/0x (1970)
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Home » Racing Engines » Porshce Type 911/0x

Specifications

Porsche Type 911/01, 911/02, 911/03 engines
Porsche Type 911/20, 911/21, 911/22 and 911/73 racing engines
Introduced in 1970
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Dimensions

Cylinders arrangement: flat boxer 6 cyl with 180º included angle
Strokes: 4

Basic version

All engines codes 911/01, 911/02, 911/03
Bore x Stroke: 84.0 mm x 66.0 mm, 3.307" x 2.598"
Capacity: 2194.53 cc, 134 ci

Racing versions

Engine Code Bore x Stroke Capacity
911/20 85.0 mm x 66.0 mm, 3.346" x 2.598" 2247 cc, 137.1 ci
911/21 87.5 mm x 66.0 mm, 3.445" x 2.598" 2380 cc, 145.2 ci
911/22 85.0 mm x 66.0 mm, 3.346" x 2.598" 2247 cc, 137.1 ci
911/73 89.0 mm x 66.0 mm, 3.504" x 2.598" 2464 cc, 150.4 ci

Construction materials

silumin alloy crank case. Magnesium alloy crank case for 911/20, 911/21, 911/22 and 911/73. 124.5mm bore spacing, with cast iron cylinder liners coated with fins for air cooling
Aluminium alloy head with hemi combustion chamber
forged steel crankshaft with 8 plain main bearings 57mm diameter, big end journal diameter 57mm
steel connecting rods, 130mm distance center to center, 61mm big end bearing diameter
titanium connecting rods for 901/20, 901/21, 911/22 and 911/73

Cylinder-head

2 x 1 overhead camshafts (SOHC), chain driven
2 valves/cyl. - 12 valves total. 46mm inlet valve diameter, 40mm exhaust valve diameter.
901/20, 901/21, 911/22 and 911/73: Hollow, sodium-filled exhaust valve

Typ 906 camshaft, center oiling, three bearing:
906 Lift I/E: 11.73/10.24; Duration I/E (deg crank) 281/251; Lobe Center (deg camshaft) 95; Intake Valve Overlap 6.7*-6.9*

Aspiration

Ignition

BHKZ Bosch electonic ignition
single Bosch X 270 P 21 spark plug, Bosch coils and Bendix fuel pumps
850 W alternator
Magnetti Marelli twin plugs/cylinder for 911/20, 911/21, 911/22 and 911/73
firing order 1-6-2-4-3-5
130226.jpg Source

Cooling and lubrication

aircooled
Dry sump with 1 oil cooler. 11 lt oil capacity

Models used and Output

Year Model, Engine Induction Compression ratio Power Torque
1970 Porsche 911 E type D, 911/01 Bosch Kugelfisher MFI 9.1:1 153 bhp (114 kW) @ 6200 rpm 191 Nm (141 ft·lb) @ 4500 rpm
1970 Porsche 911 S Type C/D, 911/02 Bosch Kugelfisher MFI 9.8:1 177 BHP (130 KW) @ 6500 RPM 199 Nm (147 Ft-Lbs) @ 5200 rpm
1970 Porsche 911 T Type D, 911/03 2 x Weber 40 IDT 3C carbs 8.6:1 123 bhp (92 kW) @ 5800 rpm 176 Nm (130 ft·lb) @ 4200 rpm
Racing engines
1970 Porsche 911 S/T, 911/20 Bosch Kugelfisher MFI 10.3:1 230 hp @ 7800 rpm 170 lb/ft @ 6200 rpm
1970 Porsche 911 S/T, 911/22 2 x Weber 46 IDA 3C carbs 10.3:1 230 hp @ 7800 rpm 170 lb/ft @ 6200 rpm
1971 Porsche 911 S/T, 911/21 Bosch Kugelfisher MFI 10.3:1 250 hp @ 7800 rpm 186 lb/ft @ 6200 rpm
1972 Porsche 911 S/T, 911/73 Bosch Kugelfisher MFI 10.3:1 275hp @ 8000 rpm 192 lb/ft @ 5300 rpm
Phantom+view+of+Porsche+MFI+engine1202346303.jpg Source

Drawings

Schematic+view+of+the+Porsche+MFI+system1235690811.jpg Source
Injection%2BPump%2BPost%2B1970%2B1201286868.jpg Source
Injection pump for D-jetronic mechanical pulse injection
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