Valve Seat

SEAT ANGLE SPECIFICATIONS
Intake And Exhaust Valve:
Inner Narrowing Angle 65°
Outer Narrowing Angle 30°
Seat Angle 44 - 44.5°
Width of seat contact 0.9 - 1.3 mm (0.035 - 0.051 in.)

OVERSIZE SEAT SPECIFICATIONS
Exhaust Valve Seat:
1st Oversize:
Size Mark 30
Amount Oversize 0.30 mm (0.012 inch)
Seat Insert Height 7.90 - 8.10 mm (0.311 - 0.319 inch)
I.D. Of Seat Bore In Cylinder Head 33.300 - 33.325 mm (1.3110 - 1.3120 inch)
2nd Oversize:
Size Mark 60
Amount Oversize 0.60 mm (0.024 inch)
Seat Insert Height 8.20 - 8.40 mm (0.324 - 0.331 inch)
I.D. Of Seat Bore In Cylinder Head 33.600 - 33.625 mm (1.3228 - 1.3238 inch)
Intake Valve Seat:
1st Oversize:
Size Mark 30
Amount Oversize 0.30 mm (0.012 inch)
Seat Insert Height 7.90 - 8.10 mm (0.311 - 0.319 inch)
I.D. Of Seat Bore In Cylinder Head 35.300 - 35.325 mm (1.3898 - 1.3907 inch)
2nd Oversize:
Size Mark 60
Amount Oversize 0.60 mm (0.024 inch)
Seat Insert Height 8.20 - 8.40 mm (0.324 - 0.331 inch)
I.D. Of Seat Bore In Cylinder Head 35.600 - 35.625 mm (1.4016 - 1.4026 inch)