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Valve Spring > < Valve Guide|Specifications|Page 2681
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Valve Seat: Specifications

Refacing Dimension [1] 
  Minimum dimensions

Intake valve  ...................................................................................................................................................................................................  36.0 mm
Exhaust valve  ................................................................................................................................................................................................  36.3 mm

Intake Valve Seat

Seat Diameter Outer Edge ...................................................................................................................................................................  31.2 mm (1.229 in)
Seat Angle ....................................................................................................................................................................................................................  45°
Seat Width ..........................................................................................................................................................  1.5 mm to 1.8 mm (0.059 in to 0.071 in)
Lower Correcting Angle ...............................................................................................................................................................................................  75°
Upper Correcting Angle ...............................................................................................................................................................................................  30°

Exhaust Valve Seat

Seat Diameter Outer Edge ...................................................................................................................................................................  27.6 mm (1.087 in)
Seat Angle ....................................................................................................................................................................................................................  45°
Seat Width ....................................................................................................................................................................  Approximately 1.8 mm (0.071 in)
Upper Correcting Angle ...............................................................................................................................................................................................  30°

 
 
[1] 

Measure distance between center of valve stem end and upper edge of cylinder head.

Valve Spring > < Valve Guide|Specifications|Page 2681