924Board.org

Levans · Posted: Fri Dec 13, 2002 1:47 am Post subject: Tornadoair...Hmm

I know this "invention" has been arround for years but has anyone actually tried this on a 924?

Are they just a money making item?

whats your guys opinions?

http://www.tornadoair.com/what_is_it_.htm
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78 Dark met Green "THE 924"

924 turbo · Posted: Fri Dec 13, 2002 7:44 am Post subject:

I remember reading somewhere that a car magazine used one on a long-term test vehicle, and it didn't do anything.
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Jon Furst

Joes924Racer · Posted: Fri Dec 13, 2002 9:30 am Post subject:

yea it doesnt work on our system
I suppose you could get dual carbs then
design a cold air intake system and have
the air swirly thing in there somewhere.
btw the tornado is a haox for a porsche
to see gains .
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1979 porsche 924 Na
1980 porsche Turbo 931GT Replica
Have u ever driven a turbo.

CBass · Joined: 03 Nov 2002 Posts: 2807 Location: Vancouver, Canada

Yeah, I toyed with the notion of building one out of sheet metal. Their "precision machined fins" are a couple pieces of sheet steel, fitted in a round section of sheet. It's not even welded

AFBCamaro · Joined: 03 Nov 2002 Posts: 199 Location: Orlando, FL

It doesnt work on ANY system! They will give you a 1-3 hp difference on factory badly designed intake systems. Very badly designed ones at that!!!

K&n spent money designing a filter that straightens intake flow. And here this thing wants to swirl the air. Swirling the air brings better atomization(at high pressure drop, only found near the port of the head) but by the time it (swirled air) enters the head the pressure drop negates this swirl. As the engine takes in air through the valves the pressure drop will "straighten" the air out.

Gm toyed with this swirling technicque on some heads(the only way it works at the port). The head ports are called swirl port heads. They overdid it and flow was restricted to much. They suck for power. If its done midly like on vortec heads you get less detonation prone heads, and slightly better economy with a "little extra power".
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1982 Porsche 924 in mild restoration process.
1991 Chevy Camaro RS "Freigh Train"

Peter_in_AU · Joined: 29 Jul 2001 Posts: 2743 Location: Sydney, Australia

the whole atomisation thing that these BS devices talk about is designed to con those people who still think their car has a carb on it.

When the already atomised spray from your injectors gets hit by a stream of air travelling at close to the speed of sound you can be sure that any fuel that isn't already is going to get the life atomised out of it. Touchy, feely swirly air has nothing to do with it.
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1979 924 (Gone to a better place)
1974 Lotus 7 S4 "Big Valve" Twin-cam (waiting)
1982 924 (As featured on Wikipedia)

Learn to love your multimeter and may the search be with you

1982Porsche924 · Joined: 14 Nov 2002 Posts: 679 Location: Cupertino, CA

"What exactly is a TORNADO? It's an air twister with 10 years of research and development behind it."

10 years of research?!?! more like 10 years figuring out in how to sell the piece of crap. It's funny to see how ricers list this product as an "engine mod" though.
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1979 Porsche 924 "S"
Engine: Euro pistons, Light Flywheel, Weber TB, Bursch Header, Cam Wheel
Suspension: Front coil-overs, adj sways, Solid bush. Thicker tors. bars, 5-bolt, BBS rims
Body: Fiberglass widebody kit, 931 Nose

AFBCamaro · Joined: 03 Nov 2002 Posts: 199 Location: Orlando, FL

Touchy swirly air!! I LIKE IT!!

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1982 Porsche 924 in mild restoration process.
1991 Chevy Camaro RS "Freigh Train"

Joes924Racer · Posted: Sat Dec 28, 2002 5:58 am Post subject:

This is a con thlse things are spendy 2..Youd be better off assuring a cold air system by making your own.
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1979 porsche 924 Na
1980 porsche Turbo 931GT Replica
Have u ever driven a turbo.