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CYLINDER HEAD CONSTRUCTION [L8, LF, L3]

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• The cylinder head is made of a high heat conductive, lightweight aluminum alloy, which is quenched.
• Compact, pentroof-type combustion chambers have been adopted. The spark plugs are mounted at the top of the combustion chambers to improve combustion efficiency.
• The intake/exhaust port layout is a cross flow type, (the angle between two valves is 39°, the two intake valves and the two exhaust valves per cylinder) which improves air intake/exhaust efficiency.
• The cylinder head bolts are plastic region tightening bolts to be tightened in five motions to insure tightening stability.

1 | Cylinder head bolt
2 | Exhaust side
3 | Intake side
4 | Engine front side
5 | The angle between two valves
6 | Intake port
7 | Exhaust port