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Thread: Heat extractor hood
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12-22-2011 #1
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The rad will definitely be tilted forward, and Im going to modify the hood hinges to pivot the hood closer to the front... Id rather not do a lift-off hood. Id also like to keep my spreader bar. I may try to find the aero tubes they use on race cars and use one of those since it will be in the middle of the airstream.
-Chris
'69 Corvette
'55 Chevy Hardtop
AutoWorks Middletown, NJ
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https://www.pro-touring.com/showthre...e-Build-Thread
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12-25-2011 #2
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What Bryce says is good advice. BTW wicker is also correct. The thing that may come into effect is the pressure area at the base of the windshield. If the exit is to close it will end up acting like a cowl induction hood and bring air in or maybe stall it out.
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12-26-2012 #3
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Extracxtor vents
Ok this is my first reply, I'm a little gun shy after all the daily beatings received over on moparts. Did a search here and this thread seems to be a good start for my question on hood extractors. I'm working on an early Dodge b body, with a fiberglass hood. In plan view the windshield has a lot of curvature. I've drank the koolaid on the high pressure area at the windshield base, but find it really hard to accept that that high pressure area exists across its width for a large portion, and in my case with a really curved winshield it would seem like only be in a narrow spot. I likely will do some yarn/go pro tests in the near future. I would like to cut some vents as close to the rear outside corners of the hood as possible, to 1. vent underhood at idle or low speeds for during street romps ( and I'm in So Fla), 2. to relieve any built pressure up at speed, and I am already running a decent custom front spoiler, the grille is already pretty restricted, and most cooling air enters thru cutout in front bumper. My concern is hood extractors may defeat all all negative and diserable underhood pressure. Of course this idea only works if the vents are in negative pressure location. Moving vents foward on hood is possible, but i like the thought that there is air movement across the the motor, even though minimal. this car is never going to see the track, and this maybe just a playtime experiment for another car that will see many track days.
Am i chasing my tail?
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