Originally Posted by Penguin74Q
The spigot on the new cover is designed to read the pressure on the inside (filtered side) of the filter.
With the spigot machined flat and a groove in the cover, the guage will only read the oil pressure ahead of the filter. If the filter plugs and reduces pressure/flow to the engine, the guage will still read the oil pump pressure on the outside of the filter.
I had thought that the oil entered through the rubber grommet to the inside of the filter, and flowed outward into the filter chamber. The system diagram on page 2-2 in the repair manual, seems to show that flow direction.
Am I looking at this wrong? Is the flow actually inward from the filter's outer surface, and out through the rubber grommet at the inboard end of the filter?
Or, maybe am I just confused about your meaning?