Re: oil pump priming postwar 327/288

Posted by Tim Cole On 2021/7/7 8:15:01

Lubriplate 105 is specifically designed for engine assembly and to disperse with oil. I've heard the horror story of failed self priming. Occasionally it happens in hot testing new motors and they are scrapped.

If there isn't a problem with the pickup then perhaps the drive gear is spinning on the shaft, or the pump is so worn it doesn't work.

On the "Senior" Packards with the separate crankcase the oil pump is located in the sump and is submerged in oil. Those pumps always worked. The Twelve pump is massive and trouble free.

Using the starter motor to somehow prime the system doesn't work very well if at all. I remember a car that was blown up in testing and the engineer in charge insisted that the motor should be primed using the starter. So there they were cranking that motor for days thinking it should produce oil pressure. It never happened. I watched this non-sense from a distance with the engineering documents in front of me that specifically stated such was not a process. Finally they let the motor run and everything was fine, but I think the motor blew up again after all that abuse.