How do I determine the piston rings I need?
To determine which ring set set you need, you need to know the size and style.
Turn the piston upside-down and measure the width of the very bottom of the skirt.
Take the measurement 90° from the wrist pin hole.
Measure each ring groove with a set of calipers.
Based on the 3 groove sizes, the style would be:
- .039″, .047″, .110″ – XC/GNH
- .059″, .059″, .110″ – XN
- .039″, .039″, .079″ – XG