9/27/2023 0 Comments Universal transmission coolerThe other type of cooler that is available is the “stacked plate” design. Tube-and-fin coolers are inexpensive and easy-to-build. The idea is to have air flow over the fins, which in turn creates a heat sink effect. Generally speaking, this cooler configuration consists of fins that are placed over aluminum tubes, which are laid out in “S” patterns. A conventional tube-and-fin cooler is the most common type you’ll find. Typically, there are two types of cooler styles available: “ tube-and-fin” and the “ stacked plate” cooler. Naturally, this might not apply to vehicles operating near the Arctic Circle, but in the rest of the world, it basically holds true. ![]() In a conversation with Bob Fouts at Earl’s Performance, we garnered this critical kernel of information: It is virtually impossible to overcool an automatic transmission, especially one in a high performance application. It was a street-driven car, but even with a big, four-core rad, the combination was always ready to melt the transmission fluid. But before you rush out and buy the first cooler available, here’s an example to ponder:ĭecades ago, we built an L88 powered 1969 Camaro complete with a turbo 400, a 12-bolt filled with 4.88:1 gears and an 8-inch torque converter. This heat can be transferred to the engine coolant resulting in a potential boil over. At the same time, if the transmission is overworked, it might raise the operating temperature of the ATF to 250 degrees F or more. If the vehicle in question has a thermostat that opens at 195 degrees F, once warmed to operating temperature, the transmission cooler will have a tough time reducing the heat of the ATF below 195 degrees F. And at the same time, it too can influence the engine coolant temperature. A typical “in-the-rad” cooler will reduce the heat of the ATF but it’s also influenced by the engine coolant temperature. The built-in coolers that reside in the bottom of the radiator are marginal at best. Often, a transmission will die within a few thousand miles (or sooner) if subjected to 300-plus degree heat. Carbon forms in the oil and for all intents and purposes, the transmission is now junk. At approximately 315 degrees F, seals and clutches effectively burn out.At approximately 295 degrees F, transmission clutch plates begin to slip because the oil is breaking down further.The end results are internal and external leaks as the the seals lose their elasticity. ![]() ![]() At approximately 260 degrees F, internal transmission seals, which are often manufactured from a polyacrylate material, begin to harden.The result is the formation of varnish inside the transmission. At approximately 240 degrees F, important additives begin to cook in the automatic transmission fluid (ATF).The ideal operating temperature for automatic transmission fluid is somewhere between 175 and 225 degrees F. In any case, loads coupled with stop-and-go traffic increase the heat level in an automatic transmission. This is also true for trucks that haul heavy loads or tow trailers battling tough conditions such as long grades, high altitudes, or desert heat. Engine rpm is up across the board, and the automatic transmission builds heat. This is especially true in big-power, street-strip machines that combine lots of horsepower with a small torque converter and steep rear axle ratio. It’s no secret that heat kills automatic transmissions. Applicable for use with transmission fluid, power steering fluid, engine oil, and a variety of other automotive fluidsįull information please find at Mishimoto website.Efficient, lightweight, tube-and-fin design promotes dramatic fluid temperature drops. ![]() Allows the use of Mishimoto aluminium radiators on automatic transmission cars.Universal mounting for use in any application.Many transmission cooler kits use standard 3/8" push on fittings, although you should check your service manual for your specific application. Transmission coolers can also be installed as supplemental cooling units for trucks which undergo a high amount of stress due to towing. By using the universal transmission cooler, automatic transmission users have the ability to use our all-aluminium radiators with their automatic applications. Some Mishimoto radiators are available only for manual transmission applications. The Mishimoto Universal Transmission Cooler and Power Steering Cooler Kit is used to cool automatic transmissions and power steering units.
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