Helical Throttle body spacer???

[joejeepny]

Can anyone tell me if these helical throttle body spacers do anything. I have read they dont. They claim to better atomize the air fuel mixture but we all have multi-point injection. What good could swirling the air before its mixed do. I would think they would cause more of a restriction then a plus.

 

[mingez]

Gojeep.com did a dyno on the install of his TBS. The results where as follows:

WITHOUT SPACER
RPM 2000 - 40 hp
2500 - 60 hp
3000 - 72 hp
3500 - 88 hp
4000 - 98 hp
WITH TBS (same rpms)
45 hp
61 hp
78 hp
90 hp
102 hp

http://go.jeep-xj.info/HowtoTBspacer.htm
He know's his stuff, from my readings of his posts at NAXJA. I've never even seen a non-helical TBS although I'm sure they make them. My guess is that resistance is in the disorganized atoms clashing as it enters. The helical pattern causes a more uniform flow. I suppose the proof is in the pudding, considering the above dyno and what i've read on this and other sites, they work.

 

[Junkpile]

I'd be interested in seeing a test that measured how much "swirl" the incoming air had after it has made the 3 turns necessary to reach the injectors out on the end cylinders(especially on a I6). Spacers work in most applications, no doubt. I'm just a little skeptical about swirling dry air way before the fuel enters the equation, which is the point that atomization takes place.

My bet is that all the different swirl and step and super-duper patterns that all these guys put in those MPFI spacers is nothing more than a way to distinguish their product from the next guys, and little to do with more power. I don't know, maybe I'm missing something.

 

[White]

I dont think I would waste my money on that..
If I had the 4cyl.
Get a turbo from a junked subaru or Audi. Audi had t3's . with the waste gate in the turbo.
Slap that sucker on there, raise your fuel pressure. I bet 10psi will wake that motor up.

 

[Utah_jeepster]

Throddle body spacers cause a vortex (swirling motion) as the air passes through it.
As the fuel is injected into this vortex you get an (better) even mixture of fuel, air as it enters the combustion chamber. You are able to achieve a 100% saturation of the fuel, air mixture.
The better mixed fuel air mixture combusts more evenly along the cylinder bank making the motor run smoother and more effieciantly.

This vortex is a proven tecnoligy that has been tested in the most harshest of racing conditions, the 1/4 mile drag racing circuit. Crowler Super Charges have been doing this micro swirling on the Super chargers passages for several years and have dominated the top fuel circuit. By adding this vortex they have been able to add 2-4% increase in horse power, thus giver the car an advantage.

By applying this to our little jeeps running gasoline this tricks the computer into sending less air/fuel mix to the cylinders, but that the fuel fixture is evenly saturated you still get the same results with less quantity of fuel air mixture. Thus as there claims say increase in horse power and increase in fuel savings.

As with any add ons your actual increase/savings may vary.
Personaly I save a 20 mile/per/ tank increase on my jeep.

 

[TwistedCU]

By applying this to our little jeeps running gasoline this tricks the computer into sending less air/fuel mix to the cylinders, but that the fuel fixture is evenly saturated you still get the same results with less quantity of fuel air mixture. Thus as there claims say increase in horse power and increase in fuel savings.

I guess your saying it does more for gas mileage with about the same performance, right?

Hmmmm, 20 miles is a hair over a gallon of gas. So at saving about $2 a week, I'd be looking at a minimum of about $104 a year in fuel savings if that explanation holds true for my XJ as well.

Might be worth a shot :idea:

 

[88Wrangles]

Despite what some say, those spacers don't actually let more air in to the engine. They do, however, work well when used with a supercharger. The horsepower might increase slightly, but I have never seen an actual read out saying that the torque has increased at all, if any, which is what you would want more of

 

[Snitty]

torque or not... IF it creates a vortex which better atomizes the mixture, then it is just better for the engine, and is better for fuel economy... but....

on an amc engine, the intake design won't allow it to help too much... the vortex will cause the incoming air to be "organized" better... but it then has to move downward, turn about 90 degrees, seperate, move out to each runner, turn another nearly 90 degrees, THEN it reaches the injector, which sprays at the incoming air... each step here will cause turbulence... and will completely kill the effect that the spacer gives...

i'm not saying it won't give ANY gains... it just might... they are inexpensive and easy to install... it just may help...

on a carbureted or throttle body injected motor, i can see it helping a lot more... the air/fuel will be atomized together, because all the mixing is done IN the carburetor/throttle body rather than the fuel being sprayed way after the vortex