VALVE, VALVE SPRING, VALVE SEAL, VALVE GUIDE CONSTRUCTION [LF, L3]
id0110001011a2
• The valves are made of heat-resistant steel. There are two intake valves and two exhaust valves per cylinder.
Valve specification
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ITEM
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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: Approx. 101.6 {4.000}
Exhaust valve:Approx.102.6 {4.039}
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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 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 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.
