Cowl hood - not sure where to put
#1
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Cowl hood - not sure where to put
After watching the hood of my STI dance around on the freeway yesterday I have a question
Has anyone tried a true cowl hood (not the Kaminari) on the Impreza?
I come from a muscle car background, and on something like say an early Camaro, a Cowl hood is much more aerodynamic and efficient than a hood scoop. The idea is that the engine compartment is a low pressure zone and the windshield is a hi-pressure zone so cold air is drawn into the engine compartment.
Has anyone tried this??
Has anyone tried a true cowl hood (not the Kaminari) on the Impreza?
I come from a muscle car background, and on something like say an early Camaro, a Cowl hood is much more aerodynamic and efficient than a hood scoop. The idea is that the engine compartment is a low pressure zone and the windshield is a hi-pressure zone so cold air is drawn into the engine compartment.
Has anyone tried this??
#2
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i was under the impression that you would want to force air into the intercooler not draw it in, hence the hood scoop. i think that with a cowl hood you would get poor intake temps and hinder the performance of your engine.
#14
High pressure does not equal high velocity. Cowl hoods are great at venting the highpressure under the hood from the air rushing into the grill and the air accumulating under the front of the car. you would need a cowl hood that effectively grabs all the high pressure air at the base of the hood and funnels it into a smaller orifice to accelerate it enough so that it will push through the intercooler fins. As far as venting the heat from the intercooler with a cowl hood one has to consider what air ispassing through it and from where. Example: if you put your scoop on backwards(if it fit), at speed there would be a venting of heat because of the draw of air from the backwards scoop. That air going out is air that has already travelled past the radiator, ac condenser, and various other hot items under the hood, it will not cool as well as air that is coming in from outside directly.
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