Re: unknown function

Posted by Guscha On 2024/1/25 12:48:00
First of all, thanks for every reply and reaction. I will process all answers chronologically.

Howard (HH56) & Ernie (Ernie Vitucci), yes, an overflow tank makes perfect sense. The water pipe directly at the thread seam apparently forms an overflow.
Ernie, to find several similar "Coolant Expansion Overflow Tanks" at was easy, due to the information about Miss Princess provided in your signature "1931 Model A Ford Tudor".

...It is not under it is open to the atmosphere...

I was guided by the inscription on the radiator cap, which btw is still sold today, 80 years later, with this warning. The existence of an overflow seems to prove the correctness of your advice.

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