How can low oil pressure effect bearings?
The low oil pressure situation is dependant on two major things: 1) How old the engine bearing and oil pump are. The older, the lower the pressure the pump will produce at idle. At idle the oil going to the front main bearing is siphoned off to the oil filter, the front rod bearing, and the timing gear spray nozzle. 2) If the spray nozzle to the timing gear is the larger of two sizes you are risking burning the rod bearing. I don’t remember the diameter or the hole in the spray nozzle but it is listed in the Willys repair manual that we have. It says in the book that if the front rod bearing is burning up the replace the spray nozzle with the smaller diameter. The Willys place I purchase parts from said that they remove the original filters and change the oil when it gets cloudy looking to prevent a chance of burning the rod bearing.
