Crankcase machining ???

[JoeRowing]

I suspect it belonged to my father. There are reasons it was not machined, but capacity to do so was not one of them. We were partly concerned by factors such as porosity and part of it was the fact that a few crankcases were lost in the pursuit of more horsepower and with a number of them to choose from, including a few nippy etc, there was no need. There were race projects that would have required a new machined crankcase - the planned engine with the intruder pistons was one - but they were never needed in the end.