Looking at EngineNerds LS7 story I was again reminded to ask a question about engine oil pick up tubes/screens.
What is the benefit of the shrouded oil pick up?
(Like this)
As opposed to a fully open screen?
Or is there some sort of well (?) that the pick up sits in to provide enough oil for the pump to pick up?
Inquiring minds want to know.
It could be a g force induced flow disruption device. Especially considering oils keep getting thinner and thinner...
The way that rolls up to the inside it keeps a small well of oil at the pickup during acceleration in any direction. For a very limited time, and probably tested to no more than 1G for that short time. Flat open screens have pick up problems at much lower G numbers.
In reply to TurnerX19 :
Good enough. Thank you.
In reply to Noddaz :
oh hey, this looks familiar! 
I always assumed it was to trap a small bit of oil to combat quick pressure drop outs when oil sloshes around...but I'm doubtful how much of a difference it would make.
This system in particular is kind of goofy...it's a dry sump but not really well developed. Still has a traditional pick up, deep sump, and crank nose mounted oil pump instead of an external belt driven pump w/ multiple scavenge stages. May just be my personal experience but it didn't seem to do the job very well!
In reply to enginenerd :
The critical part of a dry sump isn't the sump, pickup in the sump, or even the pump itself. The critical part is that the oil feed comes from an external tank, which on an LS7 it very much does. The LS7 is a very minimalist dry sump, but it's still effective because it does the important part of "pull the oil feed from a big, tall, skinny reservoir instead of the wide, flat oil pan".
In reply to Matthew Kennedy :
True, you make a good point that at its core it's still a dry sump since supply is fed from the reservoir. I was more poking fun at (or maybe just recently embittered about) the LS7 setup in particular as so many of these things still seem to catastrophically fail and they have oil starvation issues.
You'll need to log in to post.
