If you have time, one of the smartest things you can do after each race is to pull the radiator out of the car and inspect it. This is especially true if you have had an accident involving the front end of the car. Check all of the lines and fins, but more importantly, check the welds for any small cracks or potential breaks. And remember, if you start to see a small puddle of water on the shop floor on in the pits, even the slightest of leaks will develop into a larger problem. Once water temperature rises, it builds up pressure so any small leak in a radiator will only intensify under racing conditions.
Choose the radiator best suited for your type of racing. For most Saturday night teams, it's critical to be budget conscious, and it could be quite expensive investing in a four-core system like Cup teams use. But if you are looking at stepping up to a dual-core system, a radiator made by FSR Racing Products is worth a look. The company builds custom dual-core radiators for everything from Sprint Cars to Street Stocks. The units are relatively inexpensive, costing $200 to $250.
If at some point during the year you knock a hole in the radiator, take a moment and inspect it. Some teams will trash a damaged radiator and purchase a new one. But like most other radiator shops, FSR does full service repairs. So call your radiator manufacturer and find out if they can repair the radiator before you invest in a new one.
If a team chooses the right radiator, overheating shouldn't be a problem. However, constant trouble keeping the water temperature down usually means that bigger problems are present. By keeping a steady eye on the radiator, teams can avoid potential problems that can sideline a car.