I could go into the details, but I’ll pass on them for now. After a short adventure on the Motard track I was lucky enough to have a full bore run-away engine (I whent so far as to pull the wire totaly off of the plug and it kept running, creepy to watch trust me on this) followed by a seized big-end barring. I was able to pull the head and cylinder with ease, and the crank spins as much as it can easily, but the big end of the rod is toast and I have the shaving to prove it. So I know that I need to split the cases. I’ve never done that, and after that I’m a bit lost as to what to do. So any help on splitting cases on a ’01 YZ250, and what do I need to rebuild the crank?