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Old 07-12-2022, 08:00 PM   #109
The Brassworks
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Join Date: Jun 2010
Location: Paso Robles, People's Republic of CA
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Default Re: Engine temp rises when I get to cruise speed

Quote:
Originally Posted by KiWinUS View Post
One more comment. A stock 36 radiator has 4 rows of tubes. Why would you build any less in a stock style radiator? Please answer that. I believe a correct stock radiator may cool this engine. Probably 85% of Joes driving produces near stock Mercury HP.
You're correct a 1936 Ford has 4 rows. Joe has a 1935 car radiator (of which there are two designs) and it also has 4 rows but they're 3/8" oval shaped pitched at an angle and a thicker wall. There are also two core designs for the truck and they too used a similar tube shape. Today we use what is commonly called a 3/4" flat tube or elliptical shaped tube as they have more wall surface area per tube. Ford began doing this in 1930.

We also increase the fin density for more copper and heat exchange points Ford began doing this in 1932 and again in 1939.

You are probably right, Joe should buy a stock radiator.
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