Piston Rings Question.

[225DX DUDE]

I have new Yamaha piston rings. One ring has a coating on the outside and the other doesn't. Does anyone know which one is the top and which one is the middle. Thanks

[BigRed_Ryno]

was something similar with the new ATC70 rings i fitted last night. One of them had kind of chamfered edges, the other had real sharp square edges, so i put the chamfered one at the top and the square edged one in the middle. I'm not saying its right, but its how i did it, is it right? anyone? (I haven't started it up yet.....)

[225DX DUDE]

No according to the manual thats wrong. Chamfered ring is second with the widest part down. But that doesn't answer my question.

[MonroeMike]

Top ring is usually shiny or has a shiny edge, 2nd ring is normally all black. The marking on the ring faces up (I've seen them with T, P, and R's so far).

[Bryan Raffa]

yes ring markings are all ways up

[BigRed_Ryno]

No according to the manual thats wrong. Chamfered ring is second with the widest part down.


Guess id better take it apart again then :rolleyes: Will it really make a huge difference? what problems could it cause?