"Dear Enrico,

Many thanks for your email and the opportunity to participate in your web page.

I have been a regular visitor to your site as I had a Biturbo for many years, and now own a magnificent Verde Mexico 3200 GT year 2000.

I have fitted an EWP as a booster pump to both cars with terrific results. The Biturbo used to run the electric fans for 5 minutes after a hot shut down, but the EWP wired via a relay to the fans, the two fans and pump ran for 20 seconds. Same thing in heavy traffic.

On the 3200 GT, I had to replace the throttle body at great expense but with the EWP installed I am sure the new throttle body will be cooled down and will last longer than the original.

Best regards,

Richard."

TECHNICAL BULLETIN - EWP AS A BOOSTER PUMP

What a lot of our customers in your situation have done with great success is add the EWP (part no 8005) into the lower radiator hose, wired direct to the battery via an on/off thermal switch (part no 0401) and use the EWP as an auxilliary pump, while retaining the existing mechanical belt driven pump.

Both the existing belt driven mechanical pump and the EWP will pump through each other when running alone and they will boost each other when running at the same time. In fact, when running together they will pump much more than either pumping alone.

You set the temp switch to the temp below which you want the engine to run. If the temp goes above that set temp, the EWP will turn on and run until the engine temp is 4°C cooler and switch off.

When the engine is idling the existing belt driven pump may be producing 15 to 20 l/min coolant flow rate. The EWP will kick in with another 80 l/min.

When you turn off a hot engine, the heat in the exhaust manifold passes to the block and the engine temp actually increases after you turn off the engine. More heat goes into the side where the exhaust manifold is located. If the head is alloy and the block iron, they will expand at different rates. In any case the head will tend to twist to accommodate the difference in temperatures, and then the head gasket will be damaged.

If the EWP is wired direct to the battery, when you turn off a hot engine, the EWP will continue to run and wash out heat soak and cool down the engine evenly, until the engine temp reaches the set temp less 4°C. After the EWP turns off, the heat may still transfer and the EWP will turn on for another shorter period. The EWP may run for about 2 minutes all up and at 6 amps there will be very little drain on the battery.

This set up will eliminate heat soak and the engine damage associated with it as well as significantly boost cooling when the engine is running, especially at idle.

More info on Youtube at www.youtube.com.