I just looked at service manual. It is pretty sketchy but it is the second cam bushing from front that delivers oil to rockers. There is a hole in block right next to the third rocker arm shaft support from front. I don't remember if there is a corresponding hole in the head or if the oil goes up along side of the head bolt but the head gasket has a ring in it that surrounds that hole. Like I said before, I do remember that one engine that the rocker support interfered with oil supply. I had started it and ran to warm up for retorque and readjust valves and had no oil to rockers. On another note, perfect circle used to tell us you could run a car a 100 miles with no oil to rockers. They used a test procedure which varied with different models of engines to check for oil consumption through the valve guides by blocking the oil supply to rockers. I do know they run quite a while with just assembly oil but then start raising heck.
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Today's Featured Article - Tractor Profile: Ferguson TO-20 - by Staff. When the infamous "Handshake Agreement" between Henry Ford and Harry Ferguson fell by the wayside (that's a story in itself), Harry Ferguson quickly set up manufacturing plants for a United States version of his English TE-20. The TO-20 was relatively the same as the TE-20 except utilized some different casting materials and had a US-style electrical system. The TO-20 was a dead ringer for the Ford 9N and 2N models and they say that Ferguson did this on purpose when the Handshake Agreement wen
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