[HWYSTR455]

No, there's no way to control the size of the hole, and drilling into the standard galley plugs that are pressed in are a disaster waiting to happen.

The correct way to do it is by using a pre-drilled pipe fitting and tap the block, but that's a little more complicated once the engine is assembled.

Trying to drill a hole in one of the threaded plugs is not fun, and still can't control the size well. Also need to be careful the front plugs don't protrude into the galley too far, or use a taller plug, which can restrict flow.

Best to buy a setup of plugs with the 2 plugs that are drilled and install them when the engine is being assembled. The second plug with a hole is the one by the dizzy.

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