Cayenne Turbo (9PA) V8-4.8L Turbo (2008)
Valves (Figure, turbo cylinder bank 5 to 8)
1
- Intake valve (identical in the naturally aspirated and turbo engines)
2
- Valve-seat ring intake
3
- Valve guide
4
- Lower valve-spring plate intake
5
- Valve stem seal
6
- Set of valve springs, intake (identical in the naturally aspirated and turbo engines)
7
- Upper valve-spring plate intake
8
- Valve collet
9
- Upper valve-spring plate outlet (different in the naturally aspirated and turbo engines)
10
- Set of valve springs (turbo outlet); valve spring (naturally aspirated engine outlet)
11
- Lower valve-spring plate outlet (different in the naturally aspirated and turbo engines)
12
- Valve-seat ring outlet
13
- Exhaust valve (different in the naturally aspirated and turbo engines)
Distinguishing feature of exhaust valve on naturally aspirated and turbo engine
Difference between exhaust valve on naturally aspirated and turbo engine
1
- Exhaust valve - naturally aspirated engine
2
- Exhaust valve - turbo engine
3
- Difference in shank length over shank entries
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