![]() ![]() A lower psi cap will definitely keep the system pressure lower, but in stop and go traffic or high abient temperature, the engine will overheat faster and blow water from the overflow. So, the lower the psi rating of the cap, the earlier the water will boil, and the engine will overheat at a lower temperature. So now the boiling point of the water in the system becomes 212 F + 45 F = 257 F 1955-1957 Ford Thunderbird Radiator Hose Set, Upper & Lower Hoses. RockAuto ships auto parts and body parts from over 300 manufacturers to customers doors worldwide, all at warehouse prices. When the water gets hot, it expands, but the radiator cap keeps the water pressurized by not allowing it to escape from the system untill it reaches the psi rating of the cap.Ī 15 psi cap will raise the boiling point of the water by about 45 Degrees F. Includes upper and lower hoses with the correct script logo and engineering numbers. You can see that there is only a small difference between the two.Ī radiator cap increases the boiling point of water by raising the atmospheric pressure (pressurizing) the system. Typical engine operating temperature after the themostat opens (with good air flow) is about 200 degrees F. The normal boiling point of water is 212 degrees Fahrenheit (F). ![]() The purpose of a radiator cap is to raise the boiling point of the water/antifreeze mix. Our goal is to help you cool your specialty vehicle in a more informed way with parts specially designed for street rods, sport trucks and performance cars. B 16238AK Radiator Support Seal Kit with Pins For 1964-1965-1966 Ford Thunderbird (B16238AK) 9. I wanted to add something about the purpose of a radiator cap. Get the best deal for Engine Radiators for 1966 Ford Thunderbird from the largest online selection at eBay.ca.
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