VALVE, VALVE SPRING, VALVE SEAL, VALVE GUIDE CONSTRUCTION [L8, LF, L3]
id0110a1101100
• The valves are heat-resistant steel. There are two intake valves, two exhaust valves per cylinder.
Valve specification
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ITEM
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L8
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LF
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L3
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valve full length
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(mm {in})
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Intake valve: About 101.6 {4.000}
Exhaust valve: About102.6 {4.039}
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Intake valve umbrella diameter
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(mm {in})
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About 32.5 {1.28}
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About 35 {1.38}
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Exhaust valve umbrella diameter
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(mm {in})
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About 28
{1.10}
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About 30 {1.18}
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Stem diameter
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(mm {in})
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Intake valve: About 5.5 {0.22}
Exhaust valve: About 5.5 {0.22}
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• The intake valve and the exhaust valve are treated with the tufftride process to improve abrasion resistance.
• The valve spring is an uneven outer dimension type. It has been improved by reducing the size of the upper seat.
• The valve guide is made of the sintered alloy to improve abrasion resistance.
• The valve seat is integrated with the lower valve spring seat to simplify the unit and improve its 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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