The object is to not drill through anything, I just need to drill deep enough to run a tap into the spot and still have metal contact on the rear of the drilled area.
I'm thinking somewhere around Cyl 3, since I hear it has fueling/coolant issues - but I don't know what the best spot is on the head without running into a coolant or oil line, or messing up the rockers/camshafts.
your opinions/facts are greatly appreciated in this matter. thanks
