How to Get Started – Which EWP® Is Right For My Engine?

17/07/2019 12:00AM

Since the beginning of the time mankind used a mechanical internal combustion engine fueled by petrol/gasoline, a method of cooling the engine device that moved the horseless carriage around was needed.

For the most part, the air we breathe was the source of cooling. This was quite appropriate when engines were fitted to aircraft but not so for the automobile which frequently had no forward movement.

Yellow Pro Shop recently installed a Davies Craig EWP on their GT86.

Heat exchange devices, radiators, came into being and were connected to engines via various hoses. In order to move fluid through the radiator and to exchange heat with the atmosphere, the earlier mechanical engines firstly relied on thermosiphoning. This is a method of passive heat exchange, based on natural convection, which circulates fluid without the necessity of a mechanical pump. With the increase of engine sizes and power outputs the engine needed a device to pump the fluid and mechanical belt-driven water pumps were added.

But it was becoming clear there was a need for alternative power sources and refinement of coolant flow through the engine  was required. Immediately this opened up a whole new area of research and development, along with cooling options for different types of engines.

An electric water pump can be made to be a simpler device, in a better way, than a mechanically or engine driven unit.  Also, too, the Electric Water Pump  can be made to be smarter than a mechanical driven device.

Davies Craig Pty Ltd is a 50-year Australian owned and operated based company that offers a multitude of ways to electrically cool automotive engines.  Through constant research and development, Davies Craig offers a wide range of Electric Water Pumps (EWP®), Thermatic® Fans, and LCD EWP®/Fan Digital Controllers.

The Electric Water Pumps (EWP®) themselves are designed and engineered to flow a constant coolant flow through the engine and radiator, totally independent of engine revolutions. There are four Electric Water Pumps (EWP®) flow rates, of 80, 115, 130, and 150 litres per minute of constant coolant flow. movement.

Rios_racing with a Davies Craig EWP on their engine before getting boxed up for a trip to France.

They’re a compact size which means they can be simply located on most engine’s bottom radiator hose inside a car’s engine bay.

But to really take these (EWP®s) to the suitable level, the appropriate flow rate to suit your particular engine capacity needs to be considered. For example, the EWP®80 Electric Water Pump is suitable for engines of up to 2.0L in capacity.

Do you have something along the lines of a bigger four or a smaller six? The EWP®115, and EWP®130 Electric Water Pumps will be fine. But to really be sure, or to cope with larger  engine capacities and in high stress motorsports situation, the Davies Craig EWP®150 will hold its own.

In order to make this all work there is the patented Davies Craig LCD EWP®/Fan Digital Controller which allows you to set/target your engine’s operating temperature. It can be programmed to manage the speed of coolant flow, commensurate with engine temperature, through the cooling system and will also control coolant flow after the engine’ ignition is switched off.

With advice from our qualified Davies Craig consultants, there is a EWP® Combo Kit to suit virtually every application and vehicle. All EWP® Combo Kits are designed for simple do-it-yourself (DYI) installation anyone with the basic mechanical knowledge. (check out our YouTube channel for help with the installation process).

As always, Davies Craig remains at the forefront of producing the world’s best Electric Water Pumps (EWP®) and associated engine cooling equipment. We’d love to hear from you about what you’ve fitted from the extensive Davies Craig list.