Originally Posted by Orangecicle
Read Pyndon's thread: http://advrider.com/forums/showthread.php?t=147440
He documents a high-mileage rebuild on his engine. No major internal concerns -- just typical wear. At 62K, you will need new cam chains, new chain guides, probably new cam chain tensioners, new rings wouldn't be a bad idea, new valve seals, and other basics. Surface the heads when you put them back on. If that damaged piston damaged the nikasil on the cylinder wall, you need a new cylinder for that jug. Nothing too major. But, you will spend $2,000 even doing a lot of the work yourself.
Also check out this thread: http://advrider.com/forums/showthread.php?t=633576
which documents a "non-rebuild" on a bike with more than 89K on it. The new owner basically fixed a wiring problem . . . and rode it.
I've never worked on a KTM before. It looks like a disassembled robot. The are so many parts. I guess I can do it but SHITE.
The cylinder has some vertical scratches. The mechanic said the compressing was 50/90. So I'm just going to fix it.