Volume III, Issue 2, Page 34
Reduce weight; heighten ability with radiators and electric fans

Davis cores are of proprietary design and build (we can’t show more details that this). They are Nocolok furnace brazed and while some companies offer one fin count, Davis sizes the fin count and thickness to the application. Highly skilled welders then assemble the radiator.

Radiators and cooling systems are things forgotten by most racers. After all, how much of a cooling system does a car need to cruise to the staging lanes, do a burnout, make a lap, and then more or less idle back down the return road?  Maybe it doesn’t need much more than an old VW Scirocco radiator, but remember; the dog days of August are coming, and with those sultry days comes the need for a strong cooling system. This is a particularly important consideration when the time between rounds shrinks and you’re forced to hot-lap the car. Pretty soon, any hope of running that dial on your window is at best, out the window.

Horsepower = Heat…

It’s no big secret that high horsepower numbers equate to increased heat--a bunch of it. Most drag race engines, while big power makers, really aren’t all that efficient. According to the savvy, roughly one-half of the total heat energy produced by the engine is transferred back to the cooling system.  In a conventional liquid-cooled engine, the heat energy is pumped into the radiator and is then "radiated" back to the atmosphere. As the coolant (to keep things simple, let's consider the use of plain water at sea level) temperature approaches 212 degrees F, air pressure begins to build.  Since the radiatoris closed (with a cap), pressure is allowed to build without any opportunity to escape. This pressure increases, which in turn allows the water to reach a temperature higher than 212 degrees F before boiling. As the air pressure increases, so does the boiling point of the water.  Basically, this is an efficient system that works well in passenger car applications, but if the water temperature continues to increase (without leveling off), then the internal pressure will be too great for the radiator cap to handle. So your motor boils over and makes a mess and in the worst case puts water under the slicks and things quickly turn ugly.

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