Re: Oil Pressure & restart after oil pump overhall

Posted by Owen_Dyneto On 2011/2/20 16:19:25

The 320 and 384 pumps, being partially immersed in the crankcase oil, normally self-prime automatically and very easily, just crank the engine w/o ignition until pressure shows on the gauge. I believe the Twelve is the same with the intake screen just above the screen access plate in the oil pan. And yes, packing a pump with a light grease to enable it to easily self-prime is still a pretty standard practice among the knowledgeable engine rebuilders.

There is a special publication now in print about the intracasies of the Twelve oiling system and I'd recommend you get a copy.