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700rpm · 11-15-2014, 09:35 PM

Good idea from Greg, Flathead, and Colin. I checked the Hastings specs, which were the rings I used. Top ring and middle rings: .012-.022; oil ring: .010-.050. So using Les's recommendations, I'm pretty good, except the middle ring might be a little tight.

I went on an 80-mile tour today with no adverse affects. I'm going to let it settle in a little more and see what happens. I might try a scope on Monday if I can find one and it isn't too cold to get out to the garage.

An added note: the engine was sleeved back to standard at the same time the new pistons and rings were installed.

11-15-2014, 09:35 PM	#10
700rpm Senior Member Join Date: May 2010 Location: Portland, Oregon Posts: 6,039	Re: A question on Les Andrews's ring specs Good idea from Greg, Flathead, and Colin. I checked the Hastings specs, which were the rings I used. Top ring and middle rings: .012-.022; oil ring: .010-.050. So using Les's recommendations, I'm pretty good, except the middle ring might be a little tight. I went on an 80-mile tour today with no adverse affects. I'm going to let it settle in a little more and see what happens. I might try a scope on Monday if I can find one and it isn't too cold to get out to the garage. An added note: the engine was sleeved back to standard at the same time the new pistons and rings were installed. __________________ Ray Horton, Portland, OR As you go through life, keep your eye on the donut, not the hole.