2 style radiator caps- where to buy what I need
So on my 66’ I installed my original rebuilt 273’ and it runs great. I also removed the aluminum radiator and installed the factory copper installed with a shroud and clutch fan for originally. The radiator was re-cord and pressure tested. It was expensive but well done by a reputable radiator shop.
So to get to the meat of the issue- my radiator cap dribbles when the car is shut off. I pressure checked the cap and the tank. Both good to needed pressure. Current cap is 13psi and radiator tests good to 18psi.
No leaks. I called the radiator shop and they told me that those older radiator are designed to leak off pressure when they shut off because the engine goes a tad hotter due to lack of coolant flow and the pressure increases. The cap purges any above the line coolant to find its happy place. Most caps today are designed for a recovery bottle because when the car shut off the radiator cap opens a bit so as the coolant cools it sucks antifreeze back into the system.
It seems I have a recover style cap on my old style radiator. Where the hell do I find this style cap. I’m looking for a Chrysler cap for my original style engine bay. Tech help at all the companies I called cannot give me that info. I did how ever confirm there are in fact 2 style caps for 2 different applications. The radiator shop was not BSing me. Side Note: I do not want a recovery bottle, the car did not come with it. I just need a source for a factory radiator cap for a 66’ 273 with a/c. (HD cooling)
So to get to the meat of the issue- my radiator cap dribbles when the car is shut off. I pressure checked the cap and the tank. Both good to needed pressure. Current cap is 13psi and radiator tests good to 18psi.
No leaks. I called the radiator shop and they told me that those older radiator are designed to leak off pressure when they shut off because the engine goes a tad hotter due to lack of coolant flow and the pressure increases. The cap purges any above the line coolant to find its happy place. Most caps today are designed for a recovery bottle because when the car shut off the radiator cap opens a bit so as the coolant cools it sucks antifreeze back into the system.
It seems I have a recover style cap on my old style radiator. Where the hell do I find this style cap. I’m looking for a Chrysler cap for my original style engine bay. Tech help at all the companies I called cannot give me that info. I did how ever confirm there are in fact 2 style caps for 2 different applications. The radiator shop was not BSing me. Side Note: I do not want a recovery bottle, the car did not come with it. I just need a source for a factory radiator cap for a 66’ 273 with a/c. (HD cooling)
