While its a 14 cylinder radial, the plan is to make 20 of each the heads, cylinders, sleeves and pistons.
The Cylinders started out as a six foot log of 2 1/2 inch 6061 aluminum. These were sawed into 20 x 3 1/2 in long slugs and a facing cut taken on each end in the lathe. Each slug was then drilled out to 1 3/8 inch using ‘Silver and Deming’ drills starting with a 1/2 inch diameter drill and enlarging progressively a 1/4 inch.
Each blank was then faced to length, bored to .003 under size to allow for honing later on and the recess lip for the cylinder head mating cut.
