Prowler V6-3.5L VIN G (1999)
Valve: Service and Repair
Refacing Valves and Valve Seats
The intake and exhaust valves have a 44.5 to 45 degree face angle. The valve seats have a 45 to 45.5 degree face angle. The valve face and valve seat
angles are shown in the illustration.
Intake And Exhaust Valves
Valves
1. Inspect the remaining margin after the valves are refaced. Refer to Valve Specifications Chart below.
Valve Specification Chart
Valve Seats
1. When refacing valve seats, it is important that the correct size valve guide pilot be used for reseating stones. A true and complete surface must be
obtained.
2. Measure the concentricity of valve seat using dial indicator. Total runout should not exceed 0.051 mm (0.002 inch) total indicator reading.
3. Inspect the valve seat with Prussian blue to determine where the valve contacts the seat. To do this, coat valve seat LIGHTLY with Prussian blue
then set valve in place. Rotate the valve with light pressure. If the blue is transferred to the center of valve face, contact is satisfactory. If the blue
is transferred to top edge of valve face, then lower valve seat with a 15 degree stone. If the blue is transferred to the bottom edge of valve face,
then raise valve seat with a 65 degree stone.