Oil leak behind the cam

AJ/FormS said
View attachment 1715526350
You see those horizontal "tubes" going off to the oil filter? and you see the vertical one that they intersect? In the space on the vertical, and between the two horizontals; is where the cup plug goes.
If the plug gets left out, the oil doesn't get filtered.
If a second plug is installed, it will very nearly block the passage. It will probably read normal at idle, but as the revs increase there will be insufficient oil delivery.
As the contractor, foreman, and lead hand , of the project, it is on you to make sure it gets assembled right. Unless your father assembled it, trust no one; especially not your machine shop cuz they already IMO, screwed up by not replacing the plug that they took out.

I'm not trying to defend the machine shop, but in his defense, all I asked him to do was remove the cam/bearings, replace the bearings, hone the cylinders, and give it a hot bath. I didn't ask him to remove any of the plugs as I had planned on replacing them myself. So, when I went to replace the plugs, I did so one by one. That's how I missed the rear cam plug.

nm9stheham said
BTW, when you prime it and try to get oil the the rockers, you need to turn the crank and stop, and then prime for many 20-30 seconds. It takes a while for oil to get to the rockers and fill the rocker shaft. If no joy, then turn the crank 15* at most and stop, then prime it again for 20-30 seconds. It can take a while to find the 2 spots that oil the rockers.

That's what I was doing, but then again I got distracted by the damn oil leaking from the back of the block. I'll give it another go. I think I can reach far enough to engage the drill motor and turn the crank at the same time.