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What is the proper terminology "name" for those aircraft side vents?
Posted by: OttawaCorvairGuy ()
Date: June 13, 2020 08:41AM

Trying to help a friend out:
I have a friend of mine who I just spoke with this morning.
He is still having some overheating issues with his V8..

Some guys like Bruce have them on the side of their V8 Corvair.

What is the proper terminology for those aircraft side vents? (I'm after the name they call them.)

Thanks



Edited 1 time(s). Last edit at 06/13/2020 08:41AM by OttawaCorvairGuy.

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Re: What is the proper terminology "name" for those aircraft side vents?
Posted by: OttawaCorvairGuy ()
Date: June 13, 2020 08:53AM

I wanted to change aircraft to aerodynamic / NASCAR Vents but it timed out before I got back from unlocking the gate for Marie. Grin

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Re: What is the proper terminology "name" for those aircraft side vents?
Posted by: 2manyvairs ()
Date: June 13, 2020 09:16AM

naca ducts

Jeff


1960 700 sedan - blue, #1819 oldest existing non horn slot car
1962 Monza sedan - black w/red cloth interior daily driver
1962 Monza coupe - silver blue/blue 4spd
1963 Greenbrier - standard, "Turdbrier"
1963 Monza cvt - Ivy Green/Fawn It's NOT red !!
1964 Monza coupe - red/black, 95hp pg, 54k miles 3rd owner
1964 Spyder cvt - Blk/Red It's NOT red either !!
1965 Monza ht - retired daily driver, the storage shed
1965 Corsa 140 ht - all good except for how it looks.
1965 Corsa 180 cvt - perfect body, everything else shot
1966 Corsa 140 ht - Red/Red, Canadian w/factory headrests, wood wheel, rr speaker, & oil bath,


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Re: What is the proper terminology "name" for those aircraft side vents?
Date: June 13, 2020 09:41AM

NACA = National Advisory Committee for Aeronautics
Later became part of NASA

NACA Duct




Dan Davis ~ Pierce County, WA ~ CORSA Western Director + Corvairs NW + North Cascades Corvairs + Corvanatics
1966 Corsa Turbo coupe ~ ~ 1966 Corsa 140 Coupe ~ ~ 1965 Monza 140/4 Convertible Sierra Tan/Fawn ~ 1964 Monza Spyder Convertible ~ 1960 Monza Ermine White/Red PG ++ ~ 1965 Monza 140/4 CoupeEvening Orchid w/ ivory/black interior ~ 1962 Monza Wagon 102/4 ~ 1963 Rampside/Scamper ~ 1963 Red/Greenbrier ~ 1969 Ultra Van #468

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Re: What is the proper terminology "name" for those aircraft side vents?
Posted by: OttawaCorvairGuy ()
Date: June 13, 2020 09:49AM

Thank you guys...

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Re: What is the proper terminology "name" for those aircraft side vents?
Posted by: ricgflys ()
Date: June 13, 2020 02:54PM

They work best when they are in a higher pressure area, discharging into lower pressure. They don't reach out and scoop the wind.

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Re: What is the proper terminology "name" for those aircraft side vents?
Posted by: wittsend ()
Date: June 14, 2020 01:14PM

They look like, by design, to work a bit like a rolling snowball. The small initial area would seem to get the ball rolling and then draw a larger quantity of air into the opening. I'd think that there would be minimal turbulence this way. But, I'm just a layman guessing. Any engineers that actually know how they work?

I have similar adapted from my T-Bird Turbo Coupe drive train onto my Pinto for the intercooler.

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Re: What is the proper terminology "name" for those aircraft side vents?
Posted by: mattlockwood ()
Date: June 27, 2020 06:55AM

Considering one of these for my Bus. I sure that the stock bus vents aren’t large enough for a corvair fan

------------------------------------------
1970 VW Bus- converting to a 110hp w/a PG

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Re: What is the proper terminology "name" for those aircraft side vents?
Posted by: jamesolefjensen ()
Date: June 27, 2020 09:23AM

One of Carrol Smith's "(fill in the blank) to Win" books has a good explanation of how the NACA duct works. Something to do with vortices spinning into the opening.

Back to the overheating V8. Assuming the radiator is in the front, bleed the system with the nose up in the air higher than the engine (or as high as possible). With the coolant pipes going down under the car, it might be hard for the pump to get rid of air pockets in the engine. With the radiator elevated, buoyancy becomes you friend. On the air flow side, don't neglect the outlet side of the radiator. Make sure it's at least as free flowing as the inlet. If not modified correctly, I'd imagine the trunk would be very restricted.

Just my 2¢

James
65 Corsa
SF Bay Area

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Re: What is the proper terminology "name" for those aircraft side vents?
Date: June 27, 2020 10:09AM

On my DeTomaso Mangusta, I found that a bleed valve - actually a radiator drain valve - on the upper gooseneck removed the air from the cooling system.

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Re: What is the proper terminology "name" for those aircraft side vents?
Posted by: KGB Pilot125 ()
Date: June 27, 2020 10:40AM

Not sure if it would be relevant but back In our racing days the exit from the radiator was almost as important as the inlet.

Josh
'63 Rampside
Denver Area

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Re: What is the proper terminology "name" for those aircraft side vents?
Posted by: MattNall ()
Date: June 27, 2020 11:22AM

Always!! Actually needs to be larger than the inlet as heated air expands.

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..............................110-PG.................................................Webered-Turbo

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