VALVE, VALVE SPRING, VALVE SEAL, VALVE GUIDE CONSTRUCTION [L3]
BUE011012111N04
• The valves are made of heat-resistant steel. There are two intake valves and two exhaust valves per cylinder.
VALVE SPEC.
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valve full length
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(mm {in})
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Intake valve: Approx. 103.4 {4.070}
Exhaust valve: Approx. 104.7 {4.120}
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Intake valve umbrella diameter
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(mm {in})
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Approx. 35 {1.38}
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Exhaust valve umbrella diameter
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(mm {in})
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Approx. 30 {1.18}
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Stem diameter
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(mm {in})
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Intake valve: Approx. 5.5 {0.22}
Exhaust valve: Approx. 5.5 {0.22}
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• The intake valve and the exhaust valve are tufftride processed to improve adhesion resistance.
• The valve spring is an beehive type. It has been improved by reducing the size of the upper seat.
• The valve guide is made of sintered alloy to improve abrasion resistance.
• The valve seal is integrated with the lower spring seat to simplify the unit and improve serviceability.
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1
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Valve keeper
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2
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Upper valve spring seat
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3
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Valve spring
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4
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Valve seal
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5
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Valve guide
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6
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Valve
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