well you are going to be out some money, lets say he did fry your motor, what is a 213K mile motor worth? nothing,,,, What are you going to do go down to the junk yard and grab another 200K plus motor and have it installed?

I dont think so. you might get his labor to out it in, but i would bet that most courts would say your motor was past it useful life anyway. you might get labor and a couple hundred bucks towards a motor, a newer motor will be out of pocket money for you. He is not required to pay for a better motor.