Drilling bolt holes through the valve chest. Note brass drift fabricated to ensure concentric hole alignment during drilling.
Drilling bolt holes. Note that each hole required three chuck operations. 1: Use wobbler to align drill over target. 2: Centre drill hole. 3: Drill hole to size.
7
Drilling and trapping bolt holes in cylinder block
Stacked up cylinder and valve chest
Stacked up cylinder, valve chest and cover.
Assembled components.
Drilling the cylinder covers
Using the cylinder cover to transfer the bolt pattern to the engine standard.
Completed engine standard.
Stacked up assembly
Bearings, crank shaft and sole plate fit up
Bearings with bolting installed
Drilling the standard's feet - hole alignment with the wobbler
Drilling the standard's feet
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