the cylinder works cylinder I bought needed cleaning. The OP stated it was a replacement cylinder. I'm assuming it was new, and maybe contaminated.
Too tight end gap would explain the vertical scratches in the cylinder as well.Ring end gap not checked and/or set on installation would be my guess for the premature failure.
I got a similar problem with my ltr but it doesn’t smoke it builds up oil in my open intake box the guy I bought it from was from Wyoming and was pumping q16 fuel and I’m from colorado so it was hard for me find q16 so I empty it out and bought a 5gallon Sunoco 110 standard leaded until I finished it I then pumped 91octane because it’s not as hard to find as the other fuels could I have messed something up? Thanks in advance new to this hobbyIt's probably from mixing pump gas and race fuel!!
could the ring have been installed upside down? :read:
what do you mean by I got too much pressure,do you know the cause why this happened? I just happened to clean out the intake and saw oil not excessive but quite some oil can you recommend me anything?
Thanks for your help,I’m usually not on the rev limiter it’s fast as it is now do you think if I replace the cylinder and get a new piston and rings it will solve it or does the head have to be replaced aswell it starts right up so I’m questing valve clearance is good or what can you recommend me to do to solve it sorry for sm question I’m new to this and last owner never mentioned anything about itSounds like you blow by. Unless your riding the rev limiter which will show some oil normally. however if you dont I would say pull the head and check cylinder for wear.
Thanks a lot for the help, do you have a suggestion on what brand kit I could get to rebuild it? Or who I can take it to? Looking to do it before it gets worst@Ltr450axel you only have to do the rings and piston along with the jug. No need to replace the head. However a wise mechanic once told me. If your doing the top end you might as well do the bottom end.
My buddy once did a BBK on a Z400 and he didn't listen to my mechanic and he was doing the bottom end in about 15 mins after the first ride it locked up.