Valve and Seat Refacing Measurements
WARNING: This page is about a different car, the 2004 Lincoln LS. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
After grinding valves or valve seats, check valve clearance.
- Check the valve head and seat.
- Check valve angles.
- Check margin width.
- Refer to ENGINE - 3.0L (4V) or ENGINE - 3.9L for the procedure.
- Be sure margin width is within specification.
- Inspect for abnormalities on the valve face and seat. Install a new cylinder head assembly if abnormalities are found.