Abstract This paper deals with the production of Liberty motor cylinders and connecting-rod crankshaft bearings as carried on at the Ford Motor Company’s plant at Detroit. The contract made with the United Stales Government called for 5000 motors and these were to be produced at the rate of 50 per day of eight hours. To do this, important developments in the methods of manufacture were brought about by the Production Department of the Ford Motor Company. One of these was the method of producing cylinders from tubing. Six operations were necessary and the author describes them in detail. The methods employed to produce connecting-rod crankshaft bearings likewise resulted in a great saving of time. Twenty-one operations were found necessary for this work and a complete description of each is given. The paper concludes with an explanation of the method of installing bearings in the upper and lower halves of the Liberty motor crankcase.