Quote Originally Posted by thisadviceisworthles View Post
This one has a 618, and it is at 310 hours. I have read about them running on condition much longer, but I want to plan for a 0 time overhaul unless I see a very convincing argument that it is in good shape. Now I just need to figure out how much that would cost, or if it is even an option (something about crankshaft replacement has me worried).
I'd fly with that engine and I'd be tempted to push it along for another ~90h which would be a lot of flying. As long as you don't run it until it disintegrates......
Despite rotax discontinuing the 618 there is still good parts availability. Can still buy a new crankshaft ready to drop in for $1500. A rebuild is usually 3/4 that amount.

Two-strokes can be ornery at times but for the most part they are easy to maintain.