Low oil pressure?

brian6pac said
O.K. Duane that's what you get for reading a book, the book is wrong!
look at the oiling system schematic and tell me why there would be no oil pressure. Here is a picture of the bypass plug, I just makes the oil go through the filter if the plug was not there the oil would still go through the motor and still have pressure it just wont go through the filter.View attachment 1715207393

Well this is only my opinion but I believe without the plug the oil would loop and have no resistance so it builds no pressure. With the plug in there it forces the flow path to go through the filter and then into the motor where it encounters resistance. The pressure then would equalize on both sides of the plug which may be why the plug does not blow out. Just my opinion. The book may be wrong, I just wanted to share another reference.