If you mount the radiator and its fans too close to a device pushing air in the opposite direction it can cause a stalemate with the air and in turn give … Call the Griffin Customer Service Department at 1-800-722-3723 for assistance in selecting the correct radiator for your requirements. reach an constant equilibrium state. 5. Mechanical fans operate off of the engine's power and are usually connected Electric radiator fans are available in both pusher and puller designs. There's basically two types of fans used now: mechanical and electric powered fans. is better than no fan. The full product line now includes the patented Flex-a-fit aluminum radiators, electric fans, belt-driven fans, oil coolers, Mojave heaters and Flexite windows. 7. But, consider this - at idle or cruising speeds, you need the entire cooling system working at its optimum. Flex-a-lite invented the Flex Fan and holds the patent for the first electric fan for the automotive aftermarket. Copyright 2021 Standard Motor Products, Inc., Designed & Developed by Multimedia Solutions If your engine is designed to run at 200°F, a 14-16-pound cap should be sufficient. Use the proper water pump pulley ratio. google_ad_width = 120; the temperature. You can install two small fans side by side and add their CFM rating together to create a "big" fan. At idle "Puller" fans cool the car by sucking air from the front bumper area through the radiator. Pollution laws, new oil blends and higher combustion gasoline have forced engine design changes that have increased operating temperatures over the past decade. You need sufficient openings to the radiator that channel adequate air to the entire surface of the radiator. First, which is better; Pusher-style fans or puller fans? The pressure cap matters. However, some longitudinal (front to rear) mounted engines use the electric fan as well, but they usually have an engine-powered cooling fan. Shrouding your radiator lets the fan pull air through the entire core, Coolant transfers heat to the tubes; the tubes transfer heat to the fins. Always use the right shroud with your fan. You can easily tell when the clutch fails, the clutch seizes and the fan turns constantly - your engine becomes unusually noisy! Primary electric fans (pullers) are designed to mount behind the radiator and replace a factory belt-driven fan. First, the fan and shroud assembly was slightly wider than the El Camino's radiator core with built-in mounting points. significant power required to rotate the fan - fans are designed to provide adequate airflow at low idle speeds. when it is needed. It stops the flow of coolant through the radiator until the coolant reaches the thermostat's preset temperature. A fan without a shroud is better than no fan. /* RT66-Link728x15 */ //-->, . An unshrouded fan is moving air through only the portion of the radiator equal to the surface area of the fan. Spend your money wisely. For example, on a '32 Ford, the area of a 15.50" fan is about 189 sq. For example, on a '32 Ford, the area of a 15.50" fan is about 189 sq. This article pertains to all vehicles. Running a higher pressure cap to prevent boil over is putting a band-aid on another problem that needs to be fixed. The relative merits and technology of curved vs. straight fan blades have been debated for some time. Our fan takes full advantage. If your engine is designed to run at 200°F, a 14-16-pound cap should be sufficient. 8) Overdrive the water pump 20-30%. You may Only choose a mechanical fan over an electric fan if it's your farm tractor.