With the day nearly over, I got out the boroscope and investigated the oil passages from the pump.
There are two plates which need to be made, to block off where French blocks had a governer (very top of photo, with 2 studs seen), and what has been described as a 'rev counter' (the opening facing camera, with two threaded holes diagonally set). That should not be a problem. The lower threaded hole on vertical surface is where the oil sender goes. The one above it, on horazontal surface is for oil line to/from filter..........at least I THINK it is. The other oil line hole is just visable on right side of where I will block off the diagonal holes. I have no idea which one goes to oil filter, and which one is from the filter, but it should dawn on me at some point.........I hope! No idea what the plugged hole was for, nor do I know why there is another plugged hole further down the side of the block. You can just see it, bottom left of the photo.
This is the shaft where oil pump would sit. The hole on left side goes to the oil pressure sender. The hole on right looks to lead to the rear main bearing. I will confirm that by passing a thin piece of welding wire through, and look for it to appear where I took this photo from.
This is the oil hole coming to rear main bearing. I gather this also feeds oil along the crank?
Thats it. No more.........I promise!
