| Type |
6-cylinder aluminum opposed-cylinder engine, water-cooled |
6-cylinder aluminum opposed-cylinder engine, water cooled, twin-turbo with variable turbine geometry |
| Crankcase |
Vertically split light alloy cylinder housing with integrated crankshaft bearings |
Vertically split light alloy cylinder housing |
| Crankshaft |
Forged, long-term gas-nitro carbonated, supported by 8 bearings |
Forged, supported by 8 bearings |
| Crankshaft bearings |
Plain bearings |
| Connecting rods |
Titanium, forged, l = 131.5 mm |
Forged |
| Con-rod bearings |
Plain bearings |
Plain bearings, sputter bearings on rod side |
| Pistons |
Light alloy, forged |
| Cylinders |
Nikasil cylinder lining, detachable cylinder housing |
Cast light alloy with wet cylinder sleeves inserted, Nikasil running surface |
| Cylinder head |
Light alloy RR 350, spherical cap on combustion chamber |
Light alloy RR 350 |
| Valve arrangement |
Two input and output valves per cylinder suspended in parallel v-format |
| Diameter of inlet valve |
41 mm |
37 mm |
| Diameter of exhaust valve |
35.5 mm |
32 mm |
| Valve lift of inlet |
12.67 mm |
Large lift: 10 mm |
| Small lift: 3.6 mm |
| Valve lift of outlet |
11.1 mm |
10 mm |
| Valve gear |
Inlet and exhaust via crowned bucket tappets |
Inlet: Switchable bucket tappets |
| Outlet: Bucket tappets |
| Camshaft |
Chilled cast iron |
| Camshaft drive |
From the crankshaft via a gear wheel to the intermediate shaft, and from there to the exhaust and inlet camshafts via one roller-type chain each. |
| Camshaft adjustment- inlet side |
Porsche VarioCam with 52° adjustment (vane adjuster and valve travel adjustment) |
Porsche VarioCam Plus, continuous 40° adjustment |
| Valve clearance |
Hydraulic valve clearance compensation |
| Timing: Inlet opens, large lift |
19.4° after top dead center (TDC) |
20° before TDC |
| Timing: inlet closes, large lift |
81° after bottom dead center (BDC) |
50° after BDC |
| Timing: inlet opens, small lift |
- |
30° after TDC |
| Timing: inlet closes, small lift |
- |
30° before TDC |
| Timing: outlet opens |
46° before BDC |
40° before BDC |
| Timing: Outlet closes |
2° after TDC |
9° before TDC |