CYLINDER HEAD CONSTRUCTION[LF, L3]
id0110a0100300
• The cylinder head is made of a high heat conductive, lightweight aluminium 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 steps to insure tightening stability.
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1
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Cylinder head bolt
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2
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Exhaust side
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3
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Intake side
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4
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Engine front side
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5
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Angle between two valves
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6
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Exhaust port
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7
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Intake port
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