Measuring ring gap, especially in a bored out cylinder, is one of the key skills to know in rebuilding a motor. Gapless rings are relatively new.
Rings will move around on the piston due to a number of factors, but that is NOT the primary purpose of the honing.
“Measuring ring gap, especially in a bored out cylinder, is one of the key skills to know in rebuilding a motor. Gapless rings are relatively new.”
I used Total Seal gapless rings in a 350 around 1982. Here’s a trick with gapped rings some don’t know, the second ring gap should be the same or more than the top ring. I’ve been doing that for over ten years.
“Rings will move around on the piston due to a number of factors, but that is NOT the primary purpose of the honing.”
I didn’t say it was primary;
“Piston rings rotate, that is part of the reason for the crosshatch hone pattern.” (post 18.)
Here’s what Total Seal says; “Crosshatch angles can also vary depending on the application. These angles determine the critical ring rotation speed, generally a 45 degree crosshatch angle will do a very good job.”(post 40)
Here’s what Wisco says; “The cross-hatch in the cylinder walls induces rotation of the rings.” http://blog.wiseco.com/ring-grooves