Can someone please explain what a dry sump oiling system is and how it is differnt from stock.

pros & cons.

I have seen this mentioned, but never an explanation as to what it is.

Thanks, I'm sure I'm not the only one who doesn't know this...

 

Nearly every single production car uses a "wet" sump oiling system. The oil is stored in the oil pan beneath the crankshaft. The oil pump picks up oil from the bottom of the pan with a pump and it is cycled throughout the engine.

In a "dry" sump oiling system, oil is kept in a tank/pan outside of the engine. There are usually 2 pumps that work the system - one takes oil from sump and sends it to the tank and the other takes oil from the tank to distribute to the rest of the engine.

There are a few advantages to dry sump. With a dry sump, you no longer have excess oil around the crankshaft. This oil sticks to the crank and eats HP. Also, in a wet sump system, hard turning/braking (auto-x cars) can cause the oil to puddle on one side of the pan, causing the oil pump pick-up tube to become uncovered. This is a bad thing. LOL

Only major disadvantages would be extra weight. Also, I believe the AC system would have to be removed on the LS1 to mount the external tank/pump,etc. The ASA LS1 motors are using this system with great success.

 

I just saw this system installed on an LS1 by Futral motorsports on GTS_SS's car. Hopefully we will have some track reports and horsepower #'s soon. You should look at it as a way of taking a task away from the motor and allocating it to an outside source for (hopefully) added power.


I want to click on a normal smiley to end my post but everything is so complex....so =)