kx986 said:
I had the cylinder off my kx250 for a top end job this week and realized that there were 3 scratches on the front of the cylinder wall. They are hardly noticable by feel, but it's in a high friction area (plus i'm running a dual ring wiseco). How much life do I have left?
If I need a new sleeve, would it be easier/cheaper to get a new sleeve pressed in by a machine shop, have it bored, have it re-nickasealed, or just buy a new cylinder?
depends on how bad it is. where were the scratches? the highest friction part in the exhaust bridge, just because of the amount of heat. i have some pics of my CR cylinder on here, either look at my threads or the 2 stroke section and look for CR engine pics. i was able to clean it up quit a bit by doin the muratic acid trick. if ya don't know what that is, it's basically a deluted form of hydrochloric acid. then i used a scotch brite pad with WD and scrubed the :p out of it. looks pretty good now, but they say it has to be serviced.
and i don't know what year ur KX is, but i'm almost postive it's plated, but it isn't nickel, it's electro fusion. but if u get it replated u can get nickel i think...which is way better. like the guy above, sleeves suck cause they hold head, and they wear alot faster, and after havin mechanic install, probably more.
i'm new to this, so most of this is info from other guys on this site or thumper. like i said, check my thread any u'll find everythin u need....with pretty pictures too :laugh: