Re: 1936 - 1401 - std 8 - oil pressure / cooler question

Posted by Tim Cole On 2021/9/13 15:45:27

Well, if somehow the flow from the pump was completely blocked off it is possible for pump pressure to blow a hole in the crankcase. That can happen using heavy oils in very cold weather as well.

I would start by seeing if you can blow through the external plumbing that you modified. I don't know what kind of filter is on the engine, but they aren't supposed to flow backwards.

I know those coolers can be a problem, but usually after excessive oil pressure damage. I remember Billy Hirsch had a 34 Su8 and they thought that the higher the oil pressure the better and they blew the thing up with the resulting oil spraying out of the radiator cap.

The V-12 units are far more robust. Packard was learning.

If the plumbing is clear in the proper direction, the pump can be tested on the bench. Just pour some oil in it and start turning the shaft. It should spray out.