Listed below are the general rules for the installation of various types of compression rings.
Rings having a "pip" mark or dot on the side of the ring must always be installed with the "pip" mark or dot towards the top of the piston.
Rings with a bevel on the inside diameter but no "pip" mark or dot must be installed with the bevel towards the top of the piston.
Rings with a groove or step in the outside diameter and no "pip" mark or dot must be installed with the groove toward the bottom of the piston.
It is a good idea after installing all rings on the pistons to recheck each ring on each piston for correct installation.
Rings having no dots, bevels, tapers, or grooves can be installed either way.
Typical Ring Types/Shapes
Top Compression Rings
2nd Compression & Oil Control Rings
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Piston Ring Terminology