Let's Discuss a Dry Sump Oil Pan

[bigmansm]

For the lazy person DSOP (dry sump oil pan).
How does it work? What is chaged?
I know why it is used.

Why are the lightweight oil pans so expensive?

[Zekkius]

http://auto.howstuffworks.com/question331.htm

i think this sums up the basic gist of a dry sump, and the reasons to use one

[bigmansm]

these guys have it all.
I would still like to discuss more in dept though. Everything stated was info that i was already aware of.

[Blackwidow]

Its cool if you have the time and money thats needed, helps oil starvation under high G forces.

One of the major advantages is that you can make the motor sit lower, but that would be hard to modify to say, an e36 M3.

I belive it was the e36 M3 lightweight that had an different oil pan to help feed oil better, this solution is cheaper and should be enough on all but the most hardcore race cars.

[e36_widelip]

anybody know of any bmws using a dry sump system?

[Dado]

here is a picture of the dry sump setup.



Check this link for the parts needed. very nice setup.

http://www.vacmotorsports.com/cgi-bi...at=Oil++System

[bigmansm]

Originally Posted by Dado

here is a picture of the dry sump setup.



Check this link for the parts needed. very nice setup.

http://www.vacmotorsports.com/cgi-bi...at=Oil++System

So a seperate oil pump is needed? I thought the dry sump worked a little differently.
From my understanding, there was a flap inside the oil pan which is hindged, and this flap moved back and forth to help dispense the oil better? My bad i must have gotten thigns confused

[nickmpower]

yeah theres an external pump and tank for the oil

[Blackwidow]

Originally Posted by bigmansm

So a seperate oil pump is needed? I thought the dry sump worked a little differently.
From my understanding, there was a flap inside the oil pan which is hindged, and this flap moved back and forth to help dispense the oil better? My bad i must have gotten thigns confused

The flap is just a special oil pan, serves the same purpose but a dry sump needs another oil pump and the oil is stored outside the engine.

[morerevsm3]

Originally Posted by Blackwidow

The flap is just a special oil pan, serves the same purpose but a dry sump needs another oil pump and the oil is stored outside the engine.

that is not technically correct, the flap is only there to stop oil splash in high G corners, braking etc. dry sumping an engine works by scavenging the oil from the engine, into a separate tank, the more stages of scavenging in the pump, the better, and one stage of the pump feeds oil from the tank, into the engine oil galleries at required pressure. there are 2 entirely different benefits of dry sumping an engine, 1; because oil is in a reservoir, it will never suffer from oil surge and subsequent terminal bearing failure from lack of oil and 2; IF it is a 4 stage pump, 3 scavenge, 1 pressure, and to a lesser extent 3 stage, you can gain large h.p. increase, because crankshaft is spinning in a vacuum, i.e. almost no friction. this may not sound right, but try swinging a baseball bat under water and you will soon get the picture
cheers