Porsche 911 GT3 RS User Handbook Manual page 25

19
1. VarioCam for inlet valves
2. VarioCam for outlet valves
3. Tappets with hydraulic valve
clearance adjustment
4. Inlet valves
5. Valve springs
6. Crankshaft
7. Intake camshaft
8. Camshaft drive chain
9. Tensioner rail
15
13
13
12
11
6
18
10. Forged aluminum piston
11. Titanium connecting rod
®
12. Nikasil -coated cylinder bore
13. Resonance valve
14. Throttle valve (electronically
actuated)
15. Variable intake manifold
16. Separate engine oil reservoir
(dry-sump lubrication)
17. Oil filler pipe
· 35 ·
16
14
3
4
5
10
9
2
18. Oil scavenge pumps for
cylinder heads
19. Vacuum pump
17
7
8
1
3.8-liter Boxer engine 911 GT3