Piston Rings
- Select rings for bore diameter. Place ring in cylinder bore in which it will be installed. Use piston to square ring in bore and place ring below normal ring wear area. Measure ring end gap. If ring end gap is too small, remove material from end of ring. If ring end gap exceeds specification, try another ring set. See PISTONS, PINS & RINGS table under ENGINE SPECIFICATIONS.
- Check side clearance of rings after installing on piston. Ensure clearance is within specification around entire circumference. Replace piston and/or rings if clearance is not as specified. Ensure rings are properly spaced on piston before installing pistons into cylinder. See Fig 1.
Courtesy of FORD MOTOR CO.