How often do you tear down the top end?

[crackshot]

How often do you tear down the top end on your 2 strokes for inspection and maintenance? Let's hear it!

[yaegerb]

Every winter. Ensures a worry free mind in the summers.

[Flyingw]

Hell I built my R in 2009 and I haven't done anything to it except for chains, sprockets, and oil change. The clutch needs attention but it still runs like a raped ape..

[crackshot]

Hell I built my R in 2009 and I haven't done anything to it except for chains, sprockets, and oil change. The clutch needs attention but it still runs like a raped ape..
LOL. Same here. 2007 for mine. Heard some other guy on here went 20 years and when he tore it down, nothing needed replacing!

[fabiodriven]

When they blow up or get weak.

[El Camexican]

Was doing it between 150 and 200 hours (trail riding, race would be much more often), but that is about to change. I have a 16 hour trip planned and I'm at about 180 hours on the rings. I plan to pull the pipe off next week. If the piston is shiny below the rings it goes as is, if it's brown I'll put rings in it. With a nikasil bore if you change rings early enough the piston can last a long time, but if you run them till the rings are sloppy you'll need a piston and you could break a skirt as well.

[Marty]

Compression check at end of your riding season!! And as soon as compression dips below 150PSI it is time. That is what i do.

[crackshot]

Compression check at end of your riding season!! And as soon as compression dips below 150PSI it is time. That is what i do.

I like that answer!