Valve Seat

Angle (Intake and Exhaust)
Standard (New) 44.55-45.5°
Service Limit (Maximum) 44.5-45°

Width
Intake
Standard (New) 0.79-1.23 mm (0.0394-0.0512 inches)
Service Limit (Maximum) 1.66 mm (0.0653 inches)
Exhaust
Standard (New) 1.05-1.49 mm (0.0512-0.0630 inches)
Service Limit (Maximum) 1.92 mm (0.0756 inches)

Outside Diameter
Intake
Standard (New) 33.49-33.51 mm (1.3185-1.3193 inches)
Exhaust
Standard (New) 28.49-28.50 mm (1.121-1.122 inches)

Bore (Cylinder Head)
Intake
Standard (New) 33.399-33.423 mm (1.315-1.316 inches)
Exhaust
Standard (New) 28.399-28.423 mm (1.118-1.119 inches)