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Cowl induction... (archive)

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Posted by Justin on April 20, 2000 at 12:27:22:

In Reply to: Re: hehehe... another thought... posted by kwillmorth on April 20, 2000 at 11:23:56:

Cowl induction isn't usually an intake method, but simply an air system using the vacuum effect created by air travelling over the car. As the air travels over the car, a vacuum is created around the car (thus explaining why a piece of paper can be "sucked" out of an open window).

A cowl hood simply creates an opening near the windshield in order that this vacuum effect can actually "suck" the hot air from under the hood, out... thus being replaced with cooler, atmospheric air from any frontal source.

I've never known anyone that thought of cowl induction as an intake method... kind of an interesting thought, though. I am pretty sure that the point of most cowl "induction" systems is to keep ambient engine temperatures low.

I suppose perhaps you were confused by the term "induction"...? It doesn't mean the same thing here as in the term "forced induction". Cowl induction is inducing air into the engine bay, not NECESSARILY into the engine.

I suppose, though, on the older American blocks, it was able to accomplish both with the top-side, cylinder intake systems of the early hot rods. However, that was primary a coincidence. Cowl induction, now-a-days is primarily used to keep engine temps down... it's been that way since the inception of modern fuel injection and throttle bodies.


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