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PERFORMANCE RACING COOLING TECH

CARE AND FEEDING OF RACE RADIATORS

JEAN GENIBREL

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,...

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Water in racing radiators, can it damage the aluminum and create leaks?

JEAN GENIBREL

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...

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LS2 Block Cracks From Water Freezing

JEAN GENIBREL

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...

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HOW TO MANAGE LUBRICANT TEMPERATURES

JEAN GENIBREL

Increasingly stringent emissions standards place an added burden on engine oil as it is also called upon to prevent gasses from bypassing the rings. To further improve emissions, engine manufacturers reduce clearances at the piston skirts and the engine bearings down to the range of two thousands of an inch (.002”).In the past few decades economic and environmental conditions have combined with technological advances to change the modern vehicle dramatically. These changes challenge the design of every part of a vehicle. These conditions have made it imperative to manage and monitor water and lubricant temperatures more closely in automotive components.

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ROD/STROKE-DWELL-ROD ANGLE & PISTON SPEED CALCULATOR from APPLIEDSPEED.COM

JEAN GENIBREL

The piston pin offset can make for an interesting approach when rules do not permit different length rods. Offsetting the wrist pin in the piston has the same effect as lengthening or shortening the rod. Adjustments in piston compression height must be addressed to maintain the original compression ratio and to prevent piston contact with the head.

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RACING RADIATORS DOS AND DON'TS

JEAN GENIBREL

Always mount radiators and coolers on soft rubber. When solidly mounted the vibrations eventually cause cracks, and a failure ensues.When running straight water use tap water as it contains minerals that prevent ionization of the aluminum in the radiator.

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Race Engine Rod Stroke Ratio Calculator

JEAN GENIBREL

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...

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Water can Cause Heavy Damage to Race Motors if it Freezes

JEAN GENIBREL

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...

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Installing an Oil Cooler for Racing and Performance

JEAN GENIBREL

Cooling the oil in your race or performance motor is essential for performance and reliability. Not to be forgotten are motor-homes, tow vehicles, off road vehicles, and any and all vehicles that may encounter extremes in hot weather or increased load.

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"The Future of Racing Remains at Risk" SEMA Washington DC

JEAN GENIBREL

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...

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