Piston, Engine

Cylinder and Piston
The cylinder bore size is stamped on the front upper face of the cylinder block
Standard sized pistons are classified into two grades, "A" and "B". These grades should be used as guidelines in selecting a standard piston.











Cylinder to piston clearance at 20° C (68° F) -0.015 - 0.005 mm (-0.00059 - 0.00020 in)
Cylinder inner diameter boring limit to 100.005 mm (3.9372 in)

Piston Pin
Make sure piston pin can be inserted into piston pin hole by a thumb at 20° C (68° F)





Piston Rings