but I dont think you have tried it or understand what I am saying. You dont have to be a Physics student to understand that the wrench is not in a position to go anywhere because it absorbs rotatational torque passively and not dynamically and it in transfers that torque into a linear force exerted against the frame of the car.
However considering the general ignorance of your posts I can understand your intelligence in thinking the crankshaft rotation will send the wrench flying at 190 mph out of the engine compartment. All you are doing is letting the starter motor do the work for you.