Piston Ring

[jmartin915]

How would I be able to tell what size of lower piston ring I need. There are three different sizes...82.00mm, 82.25mm, or 82.50???

 

[timmyboy76]

can you see size of piston, still...

 

[derek]

clean the tops of the pistons. one should be readable for size. if orig seadoo pistons, 82 mm will say 81.90 or 91. 82 .25 will say 82.15 or 16. if not readable, take jug to auto parts store. they usually have dial calipers you can use to measure bore. it will be in inches. then find an online calculator or metric-inch conversion. punch in reading, and there you have it.