Non contact measurement & inspection
racing experience to develop a new product line that gives so-called ‘blue collar’ racers the same advantages that other modern race teams - Indy Car, Le Mans, and CCA - rely on. Today, Hot Products Engineering systems are valued by prestigious teams racing in series that include, NASCAR, American LeMans, MSA, IndyCar, World of Outlaw Sprint & Dirt Late Model, USAC, IMCA, SCORE, 600 Micro-sprint, Bonneville and AMA Motocross.
The AdvAnTAges of Pre-heATing
Race car engines will only achieve peak power at a very specific temperature. An engine pre-heater will ensure that the engine is always within a narrow range of that temperature, so that maximum power will be available right from the start. That ideal temperature depends largely on the type of car being raced. Engine temperature will not only affect racing performance; an insufficiently heated engine can also result in cold-temperature- related engine failure, causing a driver to not even finish the race.
Additionally, cold starts can cause significant engine wear. Pre-heating can save racing teams hard dollars while reducing engine wear, saving on expensive rebuilds, and virtually eliminating the risk of an expensive cold-piston seizure.
LineAr ThermAL exPAnsion
The whole reason we need to let our engine warm up revolves around the concept of linear thermal expansion. An engine is made up of a number of different materials. The piston is made from a certain type of aluminum alloy, the cylinder another type of aluminum alloy, the rings cast iron or steel, the valves from steel, stainless steel, or titanium, and the guides are made from yet another material. Once the engine is started, these components begin to heat up from combustion and friction as they slide back and forth. None of these materials are exactly alike, and because of this they will expand when heated or contract when cooled at different rates. This interaction between material and change in temperature is predictable and linear. When a cold engine is first
Instrumentation Monthly March 2019
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started the piston heats up and expands first. Heat is transferred from the piston to the rings and then to the cylinder wall. If we rev the engine and generate lots of combustion cycles and increase the
Above: Pete Davis, Hot Products Engineering. Below: Warming up the engine is one of the essential rituals every motor racer performs
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