Looking good I have almost finished my 9 cylinder which has taken 5 years on and off and hopefully I will soon be running it up. I am currently also in the process of completing a hit and miss Rina engine which had been put on the back shelf whilst working on the Hodgson but is coming on nicely.
Built the alignment fixtures for both engines crankshafts. Used a caswell cold bath black oxide process on the cylinders. It turned out to be pretty good and it was simple. You can see the untreated cylinder on the right.
Been working on the cylinder head CAM programs. What you see here is the result of four operations totaling over seven hours of machine time per cylinder head. The machine work is only 75% complete as each head will need at least 3 more operations to finish. I expect another 3 hours of machining will be needed to complete the head. I need 27 good ones for both engines. Aluminum is getting expensive..... lots of trial and error.... . I understand now why people have told me that the cylinder heads are the hardest part of the build.
Machined the intake and exhaust manifold faces and thread milled the 6-32 hold down. 17 minutes per cycle. Working on my fixture for the valve seats. Will use the microarc 4th axis for both valve seats and finish work on the top of the head. Slow but steady.