[Woodz428]

there was a 2 post exchange on the first page and after reading all the posts it was never revisted, I am interested. Do rings rotate on the piston or not?. I have always worked under the impression that if they do it is minimal, for 2 reasons 1) it would create more wear in the piston/cylinder wall and after pulling hundreds of engines down the wear is usually relgated to the top groove/cylinder and attributed to the heat/ring tension 2) the crosshatch used to seat the rings would act to prevent/restrict rotation. So which is it?? Usually the sticking is the ring sticking in the groove and not expanding on to the wall correctly.