Thread: need some help identifying these holes??

first set these are two tapped holes just above the oil return fitting
what are they for??and is the nut on the little stud right at the top of the pic just a grounding point?



and what is this hole for??the one just below the nissan and to the left....looks like it has a flow restrictor in it....



and what is the one above the nissan and the freeze plug? it looks like it goes into the block all the way....
there is a bolt to the immidiate left of the freeze plug its got stuff (like yellowish locktite looking stuff) around it? what is it for?



sorry i didnt get pics before i painted it...and thanks for the help identifying them!

First pic: Bottom two holes (on my swap) have nothing in them. The stud is for a retaining strap for the turbo oil/water lines.

Second pic: is oil inlet for turbo

third pic: water inlet for turbo (Above "Nissan")

The plug bolt you’re asking about is just that: a plug bolt i believe.


Hope that helps!

so in other words i need to find plugs for the oil and water inlets as my turbo setup doesnt use water lines? and what would be the oil inlet used for?