Hood Aero
05-13-2010, 04:32 PM
#51
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Re: Hood Aero
I'm having my sheet metal guy make one for my car in the next week or two. I'll see about posting pics. My one questions is how are you attaching the duct to the radiator support?
05-13-2010, 11:39 PM
#52
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Re: Hood Aero
This is the only picture i can find.
The factory bumper reinforcement can be used but the center part that holds the hood latch had to be cutout. The center opening of the front bumper sides into the duct and the duct is held between the radiator and radiator support, no hardware was needed.
The factory bumper reinforcement can be used but the center part that holds the hood latch had to be cutout. The center opening of the front bumper sides into the duct and the duct is held between the radiator and radiator support, no hardware was needed.
05-16-2010, 11:50 AM
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Re: Hood Aero
This is the only picture i can find.
The factory bumper reinforcement can be used but the center part that holds the hood latch had to be cutout. The center opening of the front bumper sides into the duct and the duct is held between the radiator and radiator support, no hardware was needed.
The factory bumper reinforcement can be used but the center part that holds the hood latch had to be cutout. The center opening of the front bumper sides into the duct and the duct is held between the radiator and radiator support, no hardware was needed.
05-16-2010, 11:58 AM
#55
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Re: Hood Aero
Mike, I think that was found illegal specifically because of the radiator placement, not the actual cutting. If I remember right, the radiator has to remain in its stock location, and that was the limiting factor.
05-16-2010, 12:38 PM
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Re: Hood Aero
Thanx Adam, I took some time and looked at the rules again and I can not find a rule that says cutting the radiator support is ok'd so I may post a thread on NASAforums and get something official.
05-31-2010, 07:44 PM
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Re: Hood Aero
back from 3 pages dead....... what about something like this a la those afraid to go right?
obviously more to release underhood pressure, but I feel it's gotta have some effect on cooling as well, or could at least be made to.
obviously more to release underhood pressure, but I feel it's gotta have some effect on cooling as well, or could at least be made to.
05-31-2010, 08:29 PM
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05-31-2010, 08:34 PM
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Re: Hood Aero
Those flaps are actually there for when the car is backwards to keep it from going airborn. They stay closed during normal race conditions if I remember correctly.
The other change increases the size of the cowl flaps - two flaps, hinged at the front so the wind will keep them closed when the truck is moving forward - from 2 inches by 10 inches to 4 inches by 15 inches. When a truck breaks loose and is going backwards, the flaps open and keep air pressure from building under the truck, which could have played a role in the trucks lifting off the ground at Daytona.
05-31-2010, 08:46 PM
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Re: Hood Aero
the roof ones are, but these looked more like pressure release from the huge canopy of the hood/fenders/bumper. All the air/airpressure through the radiator has nowhere to go otherwise. I could be mistaken though.
12-13-2013, 07:26 AM
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Re: Hood Aero
I am using a J's Racing hood. I have a half core radiator and 11x11 oil cooler filling the other half. Without any additional ducting I noticed an immediate drop in oil temp (6-8 degrees after a 20 minute session) I have been considering building a duct for the front bumper to direct air through the coolers and out the hood.
12-20-2013, 07:27 AM
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Re: Hood Aero
Whatever you do, avoid the "reversed Subaru scoop" as the bottom of the windshield is the second highest pressure zone on a car (after the front bumper of course). High pressure is shown in red.
Doing this may actually force air back into your engine bay from this zone of high pressure, or at the very least it will be much less efficient than a conventional extractor at creating the cooling that you are after. Hope this helps when you are designing your DIY hoodvents! Cheers!
Doing this may actually force air back into your engine bay from this zone of high pressure, or at the very least it will be much less efficient than a conventional extractor at creating the cooling that you are after. Hope this helps when you are designing your DIY hoodvents! Cheers!
Last edited by k20miata; 12-20-2013 at 07:30 AM. Reason: Pictures did not work properly
12-20-2013, 04:20 PM
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Re: Hood Aero
Has anybody used one of these vents with success? seems like a popular choice in the drifter world...
http://www.ebay.com/itm/141053113541...84.m1423.l2649
I'm trying to decide what i would like to do with my track car, i have a few DC2 metal hoods to play with and this beat up CF which is extremely ugly, but might be workable and can't quite decide what i want to do.
http://www.ebay.com/itm/141053113541...84.m1423.l2649
I'm trying to decide what i would like to do with my track car, i have a few DC2 metal hoods to play with and this beat up CF which is extremely ugly, but might be workable and can't quite decide what i want to do.
12-20-2013, 05:24 PM
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Re: Hood Aero
Yeah, not really going for downforce, going more for good heat extraction, then again, im planning on getting my Narrow B header coated by swaintech so maybe it wont be so bad next year anyway.
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aero, afterhours, carbon, civic, company, cut, fiber, floating, honda, hood, mikegsturbo, modification, rubber, tires, vent
