What is Dry Sump Oil Pump?

A dry sump oil pump is an oil pump that scavenges oil from inside the engine, as opposed to the regular wet sump oil pump which draws oil from a reservoir below the engine. The dry sump oil pump is typically used in high-performance or racing engines and is designed to improve performance and reliability by reducing the amount of oil that is in contact with moving engine parts.

A dry sump oil pump typically has a larger capacity than a wet sump oil pump and is designed to work with a lower viscosity oil. This allows the dry sump oil pump to scavenge oil more effectively from inside the engine, and also makes it less likely that the oil will foam or aerate. 

Dry Sump Oil Pump
Dry Sump Oil Pump

The dry sump oil pump is typically driven by the engine’s crankshaft and has a series of scavenge stages that are designed to remove oil from inside the engine. The first stage of the dry sump oil pump typically removes oil from around the crank bearings, while the second stage removes oil from around the piston rings. The third stage of the dry sump oil pump typically removes oil from the cylinder heads, and the fourth stage removes oil from the valve train.

The dry sump oil pump is a vital component of a high-performance or racing engine and can help to improve performance and reliability. If you are considering using a dry sump oil pump in your engine, be sure to consult with a qualified engineer to ensure that it is the right choice for your application.

When should you consider using a dry sump oil pump in your engine?

There are a few situations where you might want to consider using a dry sump oil pump in your engine. If you are building a high-performance or racing engine, a dry sump oil pump can be a great way to improve performance and reliability. A dry sump oil pump can also be helpful in engines that have a high degree of thermal stress, such as engines that are used in racing or high-performance applications.

If you are considering using a dry sump oil pump in your engine, be sure to consult with a qualified engineer to ensure that it is the right choice for your application.

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