can anyone give me an estimate or even a CWAG guess what the temperature under the hood of a '50's f-100 with a big block, headers, air conditioning, etc might be in the summertime... in the South or maybe West...

I'm figuring 300° or better... anyone ?? anyone ???

this is a serious question...really

j

 

I don't think it's as bad as that. Depends where you are measuring. You have a lot of air coming thru the radiator at ~220 or less. It's going to sweep across the engine and out past the exhaust, carrying a lot of heat with it.

 

I dunno about 300, but it's going to push 200 easy. Here's a temperature compensation chart for voltage regulator adjustment as an example. They didn't have AC, but gives you some ballpark to work with. Hot day + Hot engine = pretty frickin' Hot !!

 

reason I'm asking... looking at some alternative coatings over the inside of the flip front... instead of filler and primer... found a product... a UV cured resin that is used on surfboards....

I need to talk intelligently to the vendor about air flow and under hood temps for him to recommend a compatible product... they have several that MIGHT work and wanting to find the best application... if this works like advertised it would do away with a lot of the grunt work and give a nice smooth paintable finish... at least with less work...

j

 

I am going to measure this summer. When sitting still and running, anything I have ever owned with long tubes gets stupid hot under hood during summer. Nowhere near 300 at the hood though. That is way past boiling water.

 

I'd say parking after a good run on a hot day, you'll get heat soak that will put the compartment closer to 300. Might be worth running your radiator fan after shutdown like modern cars.

 

I had not heard the term "heat soak" that Ross used. I looked it up and thought I'd share an article in case someone else out there hadn't heard either.

Thanks!

http://cjbfire.com/Heatsoak.pdf