What did you do with whatever else you've got?

[nick crisp]

Started re-assembly of my suzuki x7 after a rebore........2 stroke twiin cylinder 250cc, for you young uns ..........one piston in no problem, came to fit the other and one of the rings tightens up in the grove before the ends meet, just cant quite get it in the bore, so off with the rings and I try them one at a time, they go in easy  :rolleyes....so, put them both back on and try again, still cant get the foccin thing in....round peg in a round hole, and I cant foccin do it  :wall.......so off again, try them one at a time , no problems, fit both and still cant get the foccin thing in  :wall :wall :wall......so out of curiosity I take the rings off, turn them over and re-fit , fitted in the bore a treat  .....work that one out 

Now, I'm the first to admit I may not be a genius when it comes to mechanics, engineering and the like, so I may be wrong here, but....

Are piston rings not designed to resist blow-by during combustion; they will flex against the cylinder wall giving a firmer seal? So, if that is the case, they will be designed to fit in a certain way up? And correct me if I'm wrong, but on some engines, the rings will only sit properly up to the ring 'peg' if the correct way up, to prevent fitting the wrong way up?