BOLTING THE TRIPLE CYLINDER HEADS, and another jig.
The 56 bolts which attach the cylinder heads, were installed today.
First, the heads were bolted into position with a jig.
The jig fits into the milling machine T slot, and the bolts are exactly positioned in the centre of the heads.
The bolts hold the heads in place while the centre drilling, through drilling and thread tapping takes place.
That is 4 processes for each of the 56 holes. Even semi automating the process using CNC, it took 6 hours, including setting up, making the jig, and finally installing the bolts.
I have left the set up intact on the milling machine, until I am sure that there are no further processes I can perform with the block in this position.