Operation CHARM: Car repair manuals for everyone.

Cylinder Head, Valve Guides & Valve Seats

Face Angle 45°
Seat Angle 46°
Seat Runout .05°
Seat Width
Intake 1.55mm-1.85mm (.061"-.073")
Exhaust 1.70mm-2.00mm (.067"-.079")
Stem Clearance .026mm-.068mm (.0010"-.0027)