Duratec cylinder head oil galley plugs

[papak]

So I finally get the head back on the motor, motor and transmission back in the car, all ancillaries installed, oil filled and coolant filled and bled. I disable the fuel pump and ECU and spin the motor to generate some oil pressure. The needle OP needle quivers a bit but no real pressure. I only turned it for a few seconds so no presumed damage. It turns out that the machine shop removed the plugs at the back of the cylinder head at the rear of each cam oil journal and didn't replace them. AAARRRGGGHHH!!! My fault for not checking but it shouldn't have left the shop that way. The task was clearly noted on the work order and checked off. 

 

I wouldn't mind if it was simply a matter of pulling the head but due to the close quarters in the engine compartment, I really need to drop the engine again in order to remove the crank pulley, front cover, cam chain, etc. 

 

Does anyone know the size of the plugs for the indicated holes? The holes measure about 9mm ID. Is there an obscure Ford part number?

 

 

[MV8]

It is a special rivet. Takes a special rivet gun. Some shops tap for a flanged, socket head plug with an o-ring or gasket.

[papak]

I ended up tapping each galley for an M10x1.0 threaded plug. After tapping each hole, I fabricated a high velocity nozzle for the shop vac and kept at it until I was sucking clean oil. I verified the cleanliness of the galleys with a boroscope. As may be evident, the threaded plugs come with copper crush washers.  Taking the "belt AND suspenders" approach, there is also a careful application of silicon sealant on the threads as well. Whew!