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Old 09-16-2021, 06:47 AM   #12
nkaminar
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Join Date: Jan 2012
Location: Western North Carolina
Posts: 3,897
Default Re: Overheating 1930 Model A

I am very happy with my Bergs radiator. It is the atmospheric variety. The car never overheats even when I push it up a steep grade in summer.

I have a 160 degree thermostat but I drilled 6 holes in the flange so that I get some flow even with the thermostat closed. That seems to help the operation of the thermostat and more uniform temperature in the engine. With my heat gun I measured 170 degrees at the head and 200 degrees at the pan while the temperature gauge installed in the output neck measured 140. This was while driving at 45 on a level road in summer. The holes in the thermostat are 1/4 inch.
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