Putting it bluntley, stop feeling sorry for yourself, its an engine, if you can't afford one today then put it away, the events will still be available when your ready to rebuild it.

Motorsport does suck when it all goes wrong, ive got particular vengeance with an event, four times ive sat on the start line, and ive had four DNF's lol Other than that ive finished every event ive entered.

It will all come good, if you sell now because of cost, it will cost you 4 times as much when you feel the need again.