PERFORMANCE RACING COOLING TECH

RACING RADIATORS DOS AND DON'TS  "Every transfer of heat between two fluids, like water to air, is directly proportional to the mean temperature difference between the two fluids, to the area of the interface (the cooler area) between the two fluids and the volume of the cooling fluid flow." Carroll Smith, Tune to Win Here are some tips that can help in understanding cooling the water or oil of a racing engine. Pick up the air flow from the grill area where the highest air pressure location on a car or truck is located. With proper ducting to the radiator,...

What Type of Water Should I Use in my Aluminum Racing Radiator? Is Distilled Water the Best for Racing Radiators? What about “water wetters”? By Jean Genibrel Copper radiators were the norm years ago before aluminum became more affordable and welding, and brazing aluminum techniques grew more mainstream. Aluminum radiators have become ubiquitous in racing due to their affordability, light weight, and availability. However, the use of aluminum has opened some debates whose answers have remained unclear, to completely unsolved. The major question that still gnaws at every racer is: “What type of water should I use in my racing...

Chevy Block Cracks From Water Freezing Engine damage can occur while the car is still on the trailer. Call to all racers to drain the water in their motors before the first freeze No matter how sophisticated an engine is, it still follows the same laws of nature as everything else under the sun. Water freezes! Neglecting to drain the water from a race motor can be very costly.  At the end of the racing season, we tend to just to put the car away and not think about it for the rest of the winter. While this is time for...

NASCAR and FORMULA 1 ROD STROKE RATIO & PISTON SPEED At 18000 RPM Formula One engines with an RSR of 2.56 achieve peak piston speeds of over 7000 feet-per-minute (FPM).  A NASCAR Cup engine piston speed reaches 8800 FPM at 10000 RPM with an RSR of 1.91.The F1 numbers are due mainly to the engines’ short strokes.       It is pointless to address the length of the connecting rod in any engine, racing or otherwise, without looking into the ratio of the length of the rod to the length of the stroke of the crankshaft.  This rod stroke...

NASCAR K&N SERIES Block Cracks from Freezing.    Winterizing Your Race Motor Includes Draining the Water   Bill Maropulos owner of Bill Maropulos Racing builds many of the NASCAR K&N Series motors and for other racers on the west coast. (805) 520-4899. Bill supplied the picture and the information for this article. At the end of the racing season, we tend to just to put the car away and forget about it for the rest of the winter. While this is time for us to relax, the car and its engine are still subject to the weather. Freezing weather may...

THE FUTURE OF RACING REMAINS AT RISK! By SEMA Washington, D.C., Staff The future of racing remains at risk! The U.S. Environmental Protection Agency (EPA) has taken the position that it is illegal to make emissions system modifications to motor vehicles that are converted into racecars. This includes changes to the engine, exhaust or any other part of the emission system. There is a solution and support from your U.S. Senators is critical. S. 2659, the “Recognizing the Protection of Motorsports Act of 2016” (RPM Act) makes it clear that the Clean Air Act does not ban the modification of...