Dry Sumps

[DaGr8Tim]

Ok, once gain I have came to the experts for an edcuation. Mainly what is a dry sump (how does it work and differ from a wet sump) and can the be made for wet sump engine's?


Thanx in advance.

 

[Asa]

dry sumps are outside the pan, and are belt driven pumps (or electric motor, or ...) as opposed to wet sumps which are inside the pan and driven by the valve-train
NASCAR runs 'em (some, if not all, cars do), prolly could be made for a wet-sump engine

 

[Lazy JW]

Dry sumps typically use two (or more) oil pumps. Sometimes they are in one housing, sometimes they are separate. One section is the "scavenge" pump, and one section is the pressure pump. High performance aircraft engines usually have dry sump systems (it's difficult to keep the oil in the pan while flying inverted). They may have several scavenge pumps/pickup points which send oil to a remote tank, then the pressure pump draws from the tank back to the engine. Lots of motorcycles use dry sumps also.
Joe

 

[Anonymous]

Dry sump pumps constantly suck the oil out of the pan into a remote reseivoir. Therefore, the sump is relativly "dry." The biggest advantages are almost no windage effect and oil starvation is practiacaly eliminated during hard acceleration and cornering. There is little need for this kind of system on the street and even through many levels of the competitive racing accecible to most of us.

 

[63redtudor]

All turbine engines have a dry sump, they have to. The temperatures that even a small turbine run at will burn synthetic oil (turbines engines were the reason that synthetic oils were invented in the first place). The oil is literally sprayed on the bearings & then emediately sucked (scavanged) off to prevent the oil from burning. Any engine (not just a tubine) with a dry sump system needs pressure & return oil lines.
Contrast this to a wet sump where the oil is sprayed onto the bearing & then gravity gets it back to the oil sump (pan). Hope this helps,
Edwin

 

[DaGr8Tim]

Yes, very much so. There was some discussion over in tempo land about converting a wet sump 2.3 into a dry sump.