Grand Caravan FWD V6-3.3L VIN R (1999)
Valve Seats
The intake and exhaust valves have a 44-1/2 to 45 degree face angle. The valve seats have a 45 to 45-1/2 degree face angle. The valve face and valve
seat angles are shown in the image..
VALVES
1. Inspect the remaining margin after the valves are refaced. Refer to Valve Specification Chart.
VALVE SPECIFICATION CHART
VALVE SEATS
Refacing Valve Seats
CAUTION: Remove metal from valve seat only. Do not remove metal from cylinder head.
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.
