they owe YOU a new engine, doesn't matter what happened, if it worked going in, they worked on it, and it no longer works, it's THEIR responsibility to restore it to original working condition. . .end of story, and don't listen to their bs about 3 loud thunks and boom. . .sounds like they drained the oil, forgot to refill it, and heard piston slap from no lubrication in the engine. . .
