Porsche 914 Technical Information
2.0 Liter Engine
| Technical Data - 2.0 Liter Engine (Data applicable only to 2.0L Engine (Code GA) is printed in brackets) | |
| Type | Air cooled, 4-stroke fuel injected engine forming one unit with transmission and final drive; rear mounted |
| Code | GA |
| Number of cylinders | 4 |
| Cylinder arrangement | Horizontally opposed, 2 cylinders each bank |
| Bore | 94 mm |
| Stroke | 71 mm |
| Total displacement | 1971 cc |
| Compression ratio | 7.6 |
| Max. output DIN/SAE net | 68 KW at 4900 rpm/91 kp at 4900 |
| Max. torque DIN/SAE net | 142 NM/3500 rpm/105 ft lb at 3500 |
| Mean piston speed | 11.6 m/sec. at 4900 rpm |
| Octane rating | 91 RON |
| Total weight, dry | approx. 146 kg / 321 lb |
| Ignition | Battery ignition |
| Ignition timing | 27° btdc |
| Firing order | 1-4-3-2 |
| Ignition control | Centrifugal and vacuum |
| Dwell angle | 44-50° |
| Spark plugs | M 14x 1.25x 19 |
| Electrode gap | 0.7 mm/0.028 in. |
| Cooling System | Air cooled by radial fan on crankshaft |
| Delivery rate | Approx. 800 L/sec. at 4600 rpm |
| Lubrication | Forced oil lubrication by gear-type pump |
| Oil cooling | Oil cooler in fan air stream |
| Oil filter | Full flow filter |
| Oil pressure gauge | Indicator lamp |
| Oil filling capacities | 3.5 L/3.7 U.S.. gt with filter replacement 3.0 L/3.2 U.S. gt without filter replacement |
| Oil consumption | 0.5-1.0 L/1000 km (0.5-1.0 U.S. gt/620 ml.) |
| Cylinder head | One for each 2 cylinders with cast cooling ribs; aluminum alloy |
| Valve seats | Press fit, sintered steel |
| Valve guides | Press fit, special brass |
| Spark plug threads | Tapped in cylinder head |
| Valve timing | 1 camshaft underneath crankshaft, cam followers, push rods and rocker arms. |
| Valves | 1 intake and 1 exhaust valve per cylinder |
| Exhaust valve | |
| Arrangement | |
| Tappet clearance, intake | 0.15 mm/0.006 in. engine cold |
| Tappet clearance, exhaust | 0.20 mm/0.008 in. engine cold |
| Valve springs | 1 spring per valve |
| Valve timing with 1 mm valve clearance | |
| Intake opens | 12° btdc |
| Intake closes | 42° abdc |
| Exhaust opens | 43° bbdc |
| Exhaust closes | 4° atdc |
| Cylinders | Individual cylinders, special gray cast iron with cooling ribs |
| Distance between centers | 124.5 mm |
| Pistons | Alloy with special inserts |
| Piston pins | Floating, snap rings |
| Piston rings | 2 compression rings 1 oil scraper ring |
| Crankcase | 2-piece divided vertically through crankshaft and camshaft bearings; aluminum alloy |
| Camshaft | Gray cast iron, 3 bearings |
| Camshaft bearings | Thin wall steel shell halves with babbitt bearing surface |
| Camshaft drive | Helical gears |
| Crankshaft | Forged steel, 4 plain bearings |
| Main bearings, 1,3 and 4 | Aluminum shells, lead coated |
| Main bearing | 2 Shells, triple alloy |
| Main bearing journals 1,3 and 4 | 60 mm dia. |
| Main bearing journal 2 | 40 mm dia. |
| Connecting rod bearing journals | 50 mm dia. |
| Flywheel | Forged, one-piece, with starter gear ring |
| Connecting rods | Forged, with I-shaped shank section |
| Connecting rod bearings | Thin wall shell halves, triple alloy |
| Piston pin bushings | Press fit steel bushings with lead/bronze bearing surface |
| Clutch | Diaphragm spring clutch |
| Type | Single disc, dry clutch |
| Total lining surface | 375 cm2 |
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