Can a High Volume oil pump suck the floor up?

[fullmetaljacket]

This question is pertaining to my last about distance from the oil pan floor, so if the oil pump pick up is too close to the oil pan sump floor, can it suck it up to a certain degree?
I ask this because both my old pick up and new one supplied with the deep sump 7 quart pan are hanging a 1/2 inch off the floor whereas 1/4" to 3/8" is acceptable. Why would they both be set up that high?

As far as I know, the engine has always had good oil pressure with the pick up a 1/2" above the floor. This engine was put together by a professional assembler who worked Pro-stock motors. I'm just perplexed that nothing has happened or am I just lucky?
My new pan has small baffle ledges up top and a trap door down by the floor whereas my old steel pan just had baffles up top and no doors.

 

[WS23U1]

Don't know but my wife can.

 

[Curiousyellow71]

This question is pertaining to my last about distance from the oil pan floor, so if the oil pump pick up is to close the oil pan sump floor, can it suck it up to a certain degree?
I ask this because both my old pick up and new one supplied with the deep sump 7 quart pan are hanging a 1/2 inch off the floor whereas 1/4" to 3/8" is acceptable.

I don't see how it could actually pull the pan in. I don't really see where a 1/8" higher is going to affect the pickup other then the pump does not have access to as much oil. We have a pan that was crushed from a wheelie then hitting the brakes. We beat it back out and kept running it. If any pan would get sucked in..it was weakened. Never gave us a issue.

 

[fullmetaljacket]

Oh, and both my old and new pans have strengthening ribs on the bottom.

 

[dvw]

Nope

 

[fullmetaljacket]

Nope

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.

 

[Dave6T4]

I would not worry about it. With a 7 qt. pan, you have at least 2 extra qts. of oil in there, so the pickup should always be in oil.

 

[fullmetaljacket]

I would not worry about it. With a 7 qt. pan, you have at least 2 extra qts. of oil in there, so the pickup should always be in oil.

This is what I was thinking, but now that I have my first trap door pan, I don't know how the oil around the pick up may act under hard acceleration. The car carries the wheels up about a whole foot, and then comes down quick, so oil is not always out back.
I mean, with a regular deep sump 7 Qt pan, it seemed to never starve for oil since the engine is still clean and mean.
Very confusing.

 

[HEMI-ITIS]

That is sweet oil pan, With the deep sump and the trap flaps DVW wheelies are safe.

 

[LemonWedge]

Benchracing every topic possible is what this forum is all about. But we just may be overthinking this one a touch, FMJ. It makes sense to me that deeper the pan is, and the more oil it carries, the further away from the bottom of the pan the pickup can safely be. The extra 1/8” also gives more volume of oil waiting “at the mouth” of the pickup.

 

[Geoff 2]

With a deeper pan, you can add more oil [ 7 qts ]. Less risk of the pan being sucked dry. why 1/2" off the floor? My guess is that the extra distance provides smoother flow/less turbulence into the pick up entrance.

 

[j-c-c-62]

I rather doubt "turbulence" (random chaotic flow) with an effectively non compressive liquid with this viscosity is much of a concern in the first place but is possible.