Valve Spring Squareness

VALVE SPRING SQUARENESS





^ Set try square along the side of valve spring and rotate spring. Measure the maximum clearance between the top face of spring and try square.
Limit : 2.0 mm (0.079 inch)
^ If it exceeds the limit, replace valve spring.

VALVE SPRING DIMENSIONS AND VALVE SPRING PRESSURE LOAD





^ Check valve spring pressure at the specified spring height.
Standard:
Intake and exhaust
Free height: 46.35 - 46.85 mm (1.8247 - 1.8444 inch)
Installation height: 33.8 mm (1.331 inch)
Installation load: 165 - 189 N (16.8 - 19.3 kg, 37 - 42 lbs.)
Height during valve open: 24.4 mm (0.961 inch)
Load with valve open: 290 - 330 N (29.6 - 33.7 km 65 - 74 lbs.)
^ If the installation load or load with valve open is out of the standard, replace valve spring.