Who knows whats up with those increase power and gas milage vortex generators they sell on ebay? Do you think they would work?

 

They are very effective at creating a vortex...in your wallet.

 

In all honesty, they would probably work better in the exhaust to reduce back pressure. Of course you would be replacing them every day, due to the heat.

 

I have a bridge to sell! Call me!

 

These only work when they are coupled with the fuel magnetizer. The air molecules must be arranged by the vortex generator and the fuel molecules must be arranged by the magnetizer so that they "mate" properly for optimal combustion.

By the way, KaleCo Auto Parts has a plethora of similar items. http://www.kalecoauto.com/

 

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I got one of those - it even came with a helpful instruction sheet:

First thou pullest the Holy Pin. Then thou must count to three. Three shall be the number of the counting and the number of the counting shall be three. Four shalt thou not count, neither shalt thou count two, excepting that thou then proceedeth to three. Five is right out. Once the number three, being the number of the counting, be reached, then lobbest thou the Holy Hand Grenade in the direction of thine foe, who, being naughty in my sight, shall snuff it.

 

That Holy handgrenade dialouge was great!

Seriously though, what vortex generator are we speaking of? External body aero? If your serious we can talk about aero improvements. While not bad, I see room for improvement in our cars for better aero even at highway speeds.

 

It's the one that people put in the intake ducting to "spin" the air in the the inlet. Waste of $80. Supposed to add 8,000 hp and increase mileage by 415,282%.

 

Well, according to Mitsubishi, a vortex generator is a row of spikey things on the top of a Lancer Evolution that helps the spoiler do it's job.

If referring to a plane, a vortex generator is a small fin that helps maintain stability in some way or another (actually similar to Mitsubishi's roof things).

When on ebay and watching infomercials, you will find that a vortex generator (tornado, vortex booster, whatever you want to call it) is an expensive crock of **** doesn't do jack for your engine performance.

In the end, the difference is that the first two are legitimate products while the 3rd is a worthless waste of money.

 

That is false advertising! There should be a law on that. I saw the add on ebay and was curious if anyone had tried or knows someone that has used this yet.

 

Even Sam Memolo (Shadetree Mechanic) is on commercials selling these things now. The vortex seams like a dumb thing to add to your intake tract. Any spinning of the air that occurs from this thing will be stopped as it enters the throttle body. The only time it may actually do any sort of measureable good would be duing full throttle runs when gas mileage is the last thing on anyone's mind. It's just a dumb scam.

As for those orgone things, I might be energy sensitive as I've felt something coming off the tip of an HHG before. I've felt it in nature as well. Interesting.

 

Jeff, you must have had the vibrating holy hand grenade...

 

Engine internals, I personally think that it is a waste of money...go buy a Honda if you want better gas mileage

As for vortex's it is also a waste of money for a daily driven street car. Unless you are taking your car to the limits all the time and I know that some of you are. If you place a vortex generator in the flow field to intentionally induce turbulent flow then you will clearly get different handling characteristics. On aircraft they are often used to direct flow over controlled surfaces. No keep in mind that we are not traveling at over 400mph. Air flow over a surface traveling 5mph vs. 50mph is going to have different effects.

Take for example if you were to place your arm out the window of your rx7. At 5mph you can hardly feel the airflow on your palm. But when you are traveling at 50 the pressure against you hand is a lot higher, right? Now if you have a car that traveling at 5 mph the aerodynamic effects are not going to be as drastic on your handling as if you were going 50.

As far as the wing comment. Yes that is true the endplates on wings are used to increase the amount of down force produced. Endplate on cars or often called winglets on planes reduce drag and maintain or increase downforce on you cars dynamics.

On kind of a side note there is a reason that taller wings are used on race cars...and occasionally Hondas. Taller wings that are mounted farther back received cleaner air. They also want to get the wing out of the separated air flow and into more clean air flow. Once the air is in a "cleaner" environment the wing will more effectively produce down force on the car. Now what the Honda folk don't know is that producing drag on their rear tires is for the most part useless since they have front wheel drive cars as far as acceleration goes.

Now that this is all said we can talk about the logistics of this actually being useful on a street driven car. Some might say that they like to attain the best performance possible but if this is your first step then you might be taking the wrong step there are other aerodynamic modifications that should be done first IMO.

I agreed with rx7carl there is much room for improvement in the FB at freeway speeds. At 130 there are even more problems.

Z

 

How effective are lip spoilers on these cars? I have one that I haven't mounted yet, similar to the Mariah Mode One lip spoiler.

Also, has anyone ever mounted a rear underbody diffuser? There seems to be plenty of space back there. I'm not sure what would go into making one

 

Are you talking about the front facia piece?

There is a 7 that has a diffuser. It is the red custom widebody. But once again who is really racing their 7 on the street...ummm...I take that back.

 

Well I don't know about that, but no rabbits were killed in the process.