Kia Cerato 2009 Service Manual page 90

Discrimination of cylinder bore size
Mark
A
B
C
7. Check the piston size mark(A) on the piston top face.
Discrimination of piston outer diameter
Mark
A
B
C
8. Select the piston related to cylinder bore class.
Piston-to-cylinder clearance :
0.060 ~ 0.080mm (0.0024 ~ 0.0031in)
Boring cylinder
1. Oversize pistons should be selected according to the largest bore cylinder.
The size of piston is stamped on top of the piston.
Cylinder bore inner diameter
77.200 ~ 77.210mm (3.0394 ~ 3.0398in)
77.210 ~ 77.220mm (3.0398 ~ 3.0402in)
77.220 ~ 77.230mm (3.0402 ~ 3.0405in)
Piston outer diameter
77.130 ~ 77.140mm (3.0366 ~ 3.0370in)
77.140 ~ 77.150mm (3.0370 ~ 3.0374in)
77.150 ~ 77.160mm (3.0374 ~ 3.0378in)