Engine – Cayenne V8
Page 1.25
Tappet Evolution
Cayenne V8 engines use a “Ultra Leichtbau” lightweight 3CF bucket
tappet.
Advantages are:
• Reduced mass
• Increased rigidity
Cylinder Head Design
Previous Cylinder Head Second Generation Cylinder Head
Additional weight savings were gained from the second generation V8
engine cylinder head design. On the left is the previous V8 4.5 liter
cylinder head – fully machined, total weight including camshaft housing
and bolts was 41 lbs (18.6 kg). On the right is the new second genera-
tion 4.8 liter head – fully machined, total weight including valve cover
and DFI is 28 lbs (12.6 kg).
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