louvers to the hood..good idea? - Hot Rod Forum : Hotrodders Bulletin Board
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Old 10-04-2004, 05:12 PM
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louvers to the hood..good idea?

I am thinking addind two 9X18 inches steel louvers right over the headers in my 383 stroker TVR. Those would basically run the entire's engine lenght on each side the block over the headers space.The engine had a tendency to overheat and since this custom application is so tight into the engine bay,I thought that adding louvers to the hood might be a good idea...but I hear from few that adding louvers might sometimes be just as useless as having none and in some case could even aggravate an already existing problem...

My custom ceramic coated headers go up and forward then down because the frame is too close to the engine..so at some place ,where the four tubes gather to one collector the distance to the hood is around two inches...gets very hot there...to me the addition of those louvers could only help cooling down the whole underhood temp..thereby the engine's own temp. but maybe I have to revise my position! Anybody has ideas on this?

thanks, Ron.

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Old 10-04-2004, 05:53 PM
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Hot Rod had this article that gives ideas for reducing heat. It mentions louvers in the article.
Tech Article: Cool is the Rule

"One other point worth mentioning is that the air must be able to escape the engine compartment once it has passed through the radiator. Extremely tight engine compartments (like an early Chevy II) might contribute to overheating problems because the air cannot easily escape the compartment. That could also contribute to a high-speed overheating problem, creating high pressure under the hood, which would block airflow through the radiator. That was the original reason for hood louvers in street rods."
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Old 10-04-2004, 06:26 PM
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My friend that put a sbc 400 in his Austin Healy ended up doing his hood and it helped quite a bit.

John
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Old 10-04-2004, 08:11 PM
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