Couple more things to think about, the regulating pressure relief valve is in the block and the safety relief valve is in the pump. Either one could have something keeping them from completely closing. Also, the elbow on the head feeding the rocker arms, early model engines metered the oil at the cam bearing, later model used a orfice in that elbow. If you inadverdently put a regular elbow when an orficed one is called for you would push a tremendous amount of oil onto rocker arms and lose oil pressure at lower volume speeds. Other wise I would start pressurizing system and looking for excess leakage. Boy, that is awful tight clearance on that size diesel engine though.
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Today's Featured Article - Sunday Drives - by Cowboy. Summer was finally upon us here in Northern Maine. We have two types of industry up here, one being "Forestry" (Wood Products) and the other "Farming" (Potatoes). There is no shortage of farm tractors and equipment around here! I have been restoring old Farm Tractors for the past 6 years, and have found it easier and less expensive to hit all the auctions and purchase whole tractors for parts needed. My wife who works at a local school, and only has weekends and summers off, while on t
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