VALVE, VALVE SPRING, VALVE SEAL, VALVE GUIDE CONSTRUCTION [L3 Turbo]SM1934307
VALVE, VALVE SPRING, VALVE SEAL, VALVE GUIDE CONSTRUCTION [L3 Turbo]

id0110b3101100

• The valves are made 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

Item

Specification
Valve length (overall)
(mm {IN.EN_UK})
Intake valve: 102.99—103.79 {4.055—4.086}
Exhaust valve: 104.25—105.05 {4.105—4.135}
Intake valve umbrella diam.
(mm {IN.EN_UK})
34.85—35.15 {1.3720—1.3838}
Exhaust valve umbrella diam.
(mm {IN.EN_UK})
29.85—30.15 {1.1752—1.1870}
Stem diam.
(mm {IN.EN_UK})
Intake valve:5.970—5.985 {0.2351—0.2356}
Exhaust valve:5.965—5.980 {0.2349—0.2354}

• 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.
acxuun00000123