Ryan, the oil galley has a steel tube in the center. The Aluminum is fairly thin, and doesn't leave much area for milling flat.
Also if you removed material from this area, you may put the inlet of the squirter more into the path of the oil rather then just tapping into it.
In my application, we drilled the galley, and then built a spacer to hold the tap flat after the block was drilled, & tapped for the bolt
Also if you removed material from this area, you may put the inlet of the squirter more into the path of the oil rather then just tapping into it.
In my application, we drilled the galley, and then built a spacer to hold the tap flat after the block was drilled, & tapped for the bolt