Cylinder Head

Cylinder Head




- The cylinder heads are made of aluminum alloy, which features light weight and high cooling efficiency.
- Each cylinder head incorporates a DOHC mechanism, which is adapted to the four valves per cylinder arrangement. A variable valve lift system is used at the intake port. The exhaust ports are formed in three independent ports. These design features contribute together to higher output.
- The combustion chamber is of a compact pent roof design with the spark plug located at its top center. The squish area formed between the piston top surface and combustion chamber helps improve mixing of air and fuel and thus combustion efficiency.
- Coolant flows from the rear to the front of the cylinder head of each bank. This serial-flow coolant line arrangement ensures highly efficient cooling of the engine.
- A metal gasket is used between the cylinder head and cylinder block. Tightening the cylinder head bolts by the angle-tightening method ensures invariable sealing performance of this gasket.