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Must be the cylinder. If I allowed 2.256 inches between the outside throws of the crankshaft it would not fit in the base and the dimensions on the base would not allow it.
Dave. Holding the casting wasn't a problem. The casting was solid (before boring it for the crankshaft journal). My problem was that the casting kept closing down on the slitting saw, seizing it, and jamming it in the cut slot. I was using a very slow speed, around 150 RPM. I guess heat was the culprit but I thought I was going slow enough and was using Plenty of cutting oil.It was a block of brass around one half inch by one inch cross section.