OK. Got it!

I decided to start with the crank case. Now, all of the castings for this engine are a devil to hold.

I dogged the top half to my Taiwanese mill and skimmed the ends to give myself a datum. I also ran a mill along the feet for another straight edge.

The a bit of messing with the height gauge to find the centres.

Then drill and bore for the con rods. Now, the drawings for this engine could be a bit clearer and show more of the detail. Fortunately, I was switched-on enough to think of the block hold-down studs and took the opportunity to centre for them and the push rod bushes by coordinate drilling. In other words, by counting the numbers on the dials. One day, I am going to invest in a DRO!

Then I turned it over and skimmed it to thickness using a pile of slips and a clock gauge to measure it.

Spot face and hold-down holes.

First component well on the way!

I must admit that I am enjoying this one. It is so nice to be able to lift everything and to be able to fit it onto the machine with space to spare! Sump next. Then I am going to be looking for some advice as to how to drill the crank and camshaft holes.

Watch this space!

Steve