Engine Design
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2004 Porsche Boxster, 2003 Porsche Boxster, 2002 Porsche Boxster, 2001 Porsche Boxster, and 2000 Porsche Boxster. However, it is still accessible from the selected car via links, so may be relevant.
ENGINE DESIGN FOR ENGINES M 96/23 AND M 96/24 - AS OF MY 2003
| Designation | Boxster 2.7 | Boxster S 3.2 |
|---|---|---|
| Type | 6-cylinder aluminum opposed-cylinder engine, water cooled | 6-cylinder aluminum opposed-cylinder engine, water cooled |
| Valve control | Via flat-base tappets | Via flat-base tappets |
| Camshaft adjustment | DOHC, Porsche VarioCam with axial camshaft adjuster | DOHC, Porsche VarioCam with axial camshaft adjuster |
| Valve arrangement | 2 inlet valves, 2 exhaust valves suspended in parallel V arrangement | 2 inlet valves, 2 exhaust valves suspended in parallel V arrangement |
| Diameter of inlet valve | 33.3 mm | 37.1 mm |
| Diameter of exhaust valve | 28.1 mm | 32.5 mm |
| Valve travel of inlet | 9.85 mm | 10.5 mm |
| Valve travel of outlet | 9.85 mm | 10 mm |
| Valve clearance | Hydraulic valve clearance compensation | Hydraulic valve clearance compensation |
| Timing: Inlet opens | 21° before TDC/19° after TDC | 26° before TDC/14° after TDC |
| Inlet closes | 9° before BDC/49° after BDC | 20° before BDC/60° after BDC |
| Outlet opens | 39° before TDC | 39° before TDC |
| Outlet closes | 8° before TDC | 6° before TDC |