Project E36 323is: Keeping The S52 Cool With CSF, Pelican Parts, SPAL and HPS


There’s no point in upgrading the radiator of an E36 if you’re not going to follow it with a high-quality pump. We worked with Pelican Parts in order to acquire an EWP Stewart Components High Performance Water Pump.

The benefit of this water pump comes with 20% more flow, stainless steel impeller and heavy duty bearings. It might cost twice as much as other options but we’re looking at producing twice the power and want to make sure we have no issues with cooling.


Here you can see the stainless steel impeller that’s going to long out live, out flow and outperform the OE composite impeller. Don’t skimp on your cooling system, especially on a car that will see track use!
Having all these shiny new cool parts are of no good if you have decaying old rubber hoses holding it all together. HPS Silicone Hoses were chosen to make sure the water pump and CSF radiator were properly fed with wonder coolant.
HPS Silicone Hoses are built with a 4-ply polyester reinforced high-temperature silicone rubber material that meets or exceeds SAEJ20 Standard. The HPS Hoses are several times stronger and more durable than stock.

To put the finishing touches on our new cooling system we added a SPAL electric fan. The SPAL electric fan will enable us to remove the old fatigued mechanical fan which is also known as a high failure part on the E36 model.

The first installed parts were the HPS hoses. We actually put these on before we did the engine build, way before. During one of our routine systems checks we found the old stock hoses were getting dangerously brittle. We could feel them crinckle in our hands! An issue we would not have to worry about anymore with our new HPS Silicone hoses.


With the factory radiator out it’s time to start working on our CSF radiator swap.



    1. This post is relatively new. I remember reading the rest a long time ago. I’m guessing we need to wait a bit longer for the next update.

    1. Pure Performance is actually no longer in business, but an engine rebuild done properly should cost you around $4,000 for machining and assembly, plus parts.

Leave a Reply

Your email address will not be published. Required fields are marked *