Tom. 70 #1 Posted March 24, 2013 Hi, I am looking to replace the piston rings on my K321AS. I looked at the piston to see if there was any stamping and there was a "020" but there was no "+" now does that mean it has been enlarged or not? Tom Share this post Link to post Share on other sites
rmaynard 16,355 #2 Posted March 24, 2013 (edited) Yes, .020 indicates that the cylinder has been bored .020 oversize, and the piston is .020 over to match. Order a set of rings that are marked .020. Edited March 24, 2013 by rmaynard Share this post Link to post Share on other sites
Tom. 70 #3 Posted March 24, 2013 Hi, Thanks very much for the fast reply! Lucky I didn't order the standard then, I will make sure I order the .020. Thanks again. Tom Share this post Link to post Share on other sites
