VALVE, VALVE SPRING, VALVE SEAL, VALVE GUIDE CONSTRUCTION [L3 Turbo]
id0110b3101100
• The valves are heat-resistant steel. There are two intake valves, two exhaust valves per cylinder.
• In order to provide resistance against high-temperature loads, a nickel-based steel with a high heat resistance has been adopted for the exhaust valves.
Valve specification
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Item
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L3 Turbo
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Valve length (overall)
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(mm {in})
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Intake valve: 102.99-103.79 {4.055-4.086}
Exhaust valve: 104.25-105.05 {4.105-4.135}
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Intake valve umbrella diam.
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(mm {in})
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34.85-35.15 {1.3720-1.3838}
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Exhaust valve umbrella diam.
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(mm {in})
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29.85-30.15 {1.1752-1.1870}
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Stem diam.
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(mm {in})
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Intake valve:5.970-5.985 {0.2351-0.2356}
Exhaust valve:5.965-5.980 {0.2349-0.2354}
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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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