Brent and I are on the same page. As I stated numerous times , the first order of business is to return the clearances to the .0015" specification. This in it's self is enough to keep the oil where it belongs. As soon as the engine is started up the wear begins again. The small tube I mentioned...
The above graphic and explanation is well written and provides more detail than the average Model A owner needs, or can understand. It appears to have come from an Engineering 101 book. When most people start getting oil into the bell housing and on their clutch they want a fix for the problem...
When main bearing clearance begins to increase, the ability of the tube in the rear main to drain the oil back into the pan can become overwhelmed. First order of business should be to adjust the bearing clearance .At the same time the oil hole in the valve chamber above the rear main is in most...