I have heard they spin but I cant say for sure. I do know I have pulled my engines apart and the rings were not the same as when I put it together. Thats why I put my comp rings 180 apart. If the comp rings were lined up would it make much difference ? I really dont think you would know. I mean I was always taught just dont line up the end gaps. Have them at least 90 degrees apart so I always install comp rings 180 apart and the oil ring gaps 180 away from the rail ends. Ron