Norm Peterson
corner barstool sitter
I'm not at all sure this is going to work as hoped, except possibly at very low speeds or when stopped with the engine running. The base of the windshield is a local high pressure region at much speed, and air would tend to go into the engine compartment there rather than out of it. Cool outside air trying to get in is why race cars have drawn intake air at the cowl (not just the drag-race cars and the wanna-be's with their "cowl induction hoods" either).Maybe 20F if we add 6 mm spacers to lift rear of hood 6mm and add gurney lip to rear of hood to increase vacuum.
Air extraction needs to happen much closer to the front of the hood, where you actually have a local low-pressure region.
Norm
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