VALVE, VALVE SPRING, VALVE SEAL, VALVE GUIDE CONSTRUCTION [ZJ, ZY]

id0110b7101100

•  The valves are made of heat-resistant steel for wear resistance improvement.

Valve specification

ITEM

ZJ

ZY

Valve full length
(mm {in})
Intake valve
Approx. 98.3 {3.87}
Approx. 97.1 {3.82}
Exhaust valve
Approx.98.7 {3.89}
Approx.96.6 {3.81}
Valve umbrella diameter
(mm {in})
Intake valve
Approx. 27.7 {1.09}
Approx. 29.2 {1.15}
Exhaust valve
Approx. 24.0 {0.945}
Approx. 25.9 {1.02}
Stem diameter
(mm {in})
Intake valve
Approx. 5.5 {0.22}
Exhaust valve
Approx. 5.5 {0.22}

•  The intake valve and the exhaust valve are tufftride processed to improve abrasion resistance.
•  An equal pitch valve-type valve spring has been adopted. In addition, the upper diameter is smaller compared to the bottom diameter. As a result, combustion efficiency has been improved by the reduced size of the upper valve spring seat and the reduced load on the valve spring.
•  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.
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