Oil pump priming

[Fox]

Thanks for the input regarding a remote filter, although mine is at the block and the sensor is just above it.

Randy, Please expand on the "bad affect in the future" would ya.

-John

[Big-Foot]

John, the "Bad affect" revolves around the size and pitch of the gears used to drive the oil pump from the camshaft and also the camshaft material.
I am speaking only of Ford Small Blocks here;
Roller Cams are made of steel and require a steel distributor drive gear. The steel gears are not up to the constant high loading of a High Volume or High Pressure pump. This high loading causes a lot of pressure on the gear interface and accelerated wear is the result.
I have seen the gears eat each other up within 30 minutes. Both the camshaft and distributor gear are usually eaten in this process - a few people have gotten lucky with the cams, but very few.
That being said - we run standard volume / standard pressure pumps in all of our small blocks. When the engine is equipped with a remote filter and/or cooler, we use all Aeroquip -12 lines and fittings for the least amount of resistance. Coolers, either Mocal or Setrab - they are both very low impact in terms of resistance.

If I were you, I would pop that oil filter off there and install another just to see if you have a difference in pressure. The pressure reading at the block will be that pressure from the OUTPUT side of the filter.

[Excaliber]

The guy with the reversed remote oil fliter tubes was none other than the infamous "Butcher", Andy Dunn.

Andy is one very SHARP guy who really knows what he is doing. That particular problem had some VERY good engine builders scratching their heads to figure out WHY Andy lost TWO engines due to oiling problems. It was a nightmare.

As I recall Andy mentioned the one thing BOTH motors had in common was "low oil pressure", not only during the prime but after they were running.

If you 25 psi with the drill, thats all your going to get when the motor runs. Would YOU be happy with 25 psi for your new motor? I don't think so, trust your drill, double check your gauge, and make SURE you get enough pressure with the drill before you start!