Can a High Volume oil pump suck the floor up?

[moparedtn]

Rick Ehrenberg said that the original oil pickups were supposed to rest on the pan floor because they had a unique design at the bottom.

View attachment 1818934

That recess in the middle and at 6 to 9 o clock allow the oil to be pulled in. The Milodon screened pickups have no recess in them so they are supposed to be between 1/4" to 1/2" from the pan floor.

That's ultimately why I decided to stick with the original pickup on mine. Right or wrong, it strikes me as the better type.

 

[fullmetaljacket]

Here's the new pick up which when I screwed it into the block until it was nice and tight, I dry installed the pan with windage and gaskets and it also hovered at 1/2" off the floor. Right there and then, I thought the manufacturer screwed up being that they told me that they set up the pick up and pan on a mocked block. The question is, did they have a windage tray and two sets of gaskets when they mocked it up?

Note the pick up tube itself which enters on the side wall is actually closer to the bottom of the pan than the previous black one. If you were to measure where the previous black pick up tube actually picked up oil, the tubes mouth must have been a full 1-1/2" inches higher from the floor because of its entry at the top of the screened box. You feel me?

1/4" to 3/8" max distance is the norm? Yes indeed on a regular pan, but is it crucial on a deep sump? The story continues.

 

[not so famous bob]

Duly noted.
1/4" to 3/8" off the floor I will have it set for sure. I'll just have to weld a 1/4" section of tube to the existing pick up tube because as it is now, by the time it tightens nicely in the block, the screened pick up box is 1/2" off the floor. Both pick ups oddly enough are short by a 1/4 " or so.
I don't want to give it one less turn into the block with locktite just to meet the optimum level.

I`d screw it in tite and level and not worry about it ...my swinging pick up is about 1/2'' off the floor of my 9 qt pan , with 7 1/2 qts in it / hi volume pump///

 

[RemCharger]

^^^ agree , this is being way over thunk.
With a high viscosity oil, with a positive displacement pump, with hig rpm, the last thing you want is cavitation at the suction head due to inadequate area/flow.