Engine Design
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2013 Porsche 911, 2012 Porsche 911, 2011 Porsche 911, 2010 Porsche 911, and 2009 Porsche 911. However, it is still accessible from the selected car via links, so may be relevant.
| Designation | 997 (MA.102) | 997 S (MA.101) |
|---|---|---|
| Type | 6-cylinder aluminum flat-six engine, water-cooled | |
| Crankcase | Vertically split light alloy cylinder housing | |
| Crankshaft | Forged, supported by 8 bearings | |
| Crankshaft bearings | Plain bearings, dia. 63 mm (2.48 in) Smooth bearings: Cyl. 1/3/5/7/8 Partially grooved bearings: Cyl. 2/4/6 |
|
| Connecting rods | Forged, l = 140 mm | |
| Con-rod bearings | Plain bearings | |
| Pistons | Pressed light alloy | |
| Cylinders | Aluminium silicon cylinder liner surface | |
| Cylinder head | 1-part light alloy cylinder head | |
| Valve arrangement | 2 valves, suspended in parallel V arrangement | |
| Diameter of inlet valve | 39.5 mm 41.8 mm | |
| Diameter of exhaust valve | 34.2 mm 36.1 mm | |