If I use the 1/8 set screws plugs like you mentioned. I assume that the size hole you drill into the lifter galley oil supply is 1/8 in diameter? Seems to small to feed the heads? Is this correct? Thanks
when you get the plugs just hold one up and then a drill bit in back on it. the bit should only be the width of the smallest part of the treads. that will leave enough metal to tap. the plug I believe is a 1/4" x 20tpi. later today i'll look at my chart for the correct size bit to use. 1/8" is .125" but the bit will be smaller at around .080"- .090" so that hole is plenty big enough to feed the rockers.
