Valve and Seat Refacing Measurements

WARNING: This page is about a different car, the 2013 Ford F-550 Super Duty, 2013 Ford F-450 Super Duty, 2013 Ford F-350 Super Duty, and 2013 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: After grinding valves or valve seats, check valve clearance.

Check the valve head and seat.
- Check valve angles.
- Check margin width.
- Be sure margin width is within specification. For additional information, refer to specifications .
  
  Fig 1: Locating Valve Margin Width
  Courtesy of FORD MOTOR CO.
Inspect for abnormalities on the valve face and seat. Install a new cylinder head assembly if abnormalities are found.