Picking the Right Engine Cooling Fan

ne of the common problems with hot rods is that they are often just that, hot—and not in a good way. Occasionally your hot rod’s cooling system may burp out a little coolant after the engine is shut down and the reason is simple enough. Although coolant is no longer circulating, it will continue to absorb heat and in some cases that will cause enough pressure to build in the system to exceed the pressure rating of the radiator cap. The result is some coolant will be released and there will be a puddle on the ground. The biggest problem with this situation is that if it happens repeatedly the coolant level may drop to a dangerously low level and that will result in a serious overheating problem. A couple of simple cures for this condition are a coolant recovery tank and/or allowing an electric engine cooling fan to run for a short period after the engine is shut