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Old 03-12-2024, 09:13 AM   #10
Kube
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Join Date: May 2010
Location: Wisconsin, USA
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Default Re: 1939 radiator overflow tank?

Quote:
Originally Posted by pistonbroke View Post
Yes I believe you should see coolant above the tubes in the top tank. Just because your car isn't running hot doesn't mean you don't have a flow issue. If the radiator just cant quite handle the volume the water pumps are sending it it has to go somewhere . The good news is your new engine is running good and your cooling system is working. I never heard, are you running thermostats? There is a simple answer here somewhere. Tim
Tim, Like you, I hope the answer is a simple one.
Me?
I'd pressure test the system at 4#. If the system holds the 4#, then I'd
pull the thermostats out if they are currently installed. If they are not installed, I'd install them. Just to see what difference that might make.
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