Zetec
Ring gap position: The piston ring gaps must be distributed evenly around the circumference of the piston This also applies to the oil scraper ring elements. Align the ring gaps at 120 degrees to each other.
| Piston diameter, class 1.  | 84.770 - 84.780 mm  | 
| Piston diameter, class 2.  | 84.780 - 84.790 mm  | 
| Piston diameter, class 3.  | 84 790 - 84.800 mm  | 
| Piston clearance in cylinder  | 0.010 - 0.030 mm  | 
| Piston pin length  | 55.800 - 56.200 mm  | 
| Piston pin diameter, (white)  | 19.997 - 20.000 mm  | 
| Piston pin clearance in piston  | 0.010 - 0.019 mm  |