I was curious about them so i got the information on how to build one on my own, My car is running ridiculously rich so i figured i may make an attempt at installing one of these on my car.

More Wondering if anyone has tried on of these on there d-series motor, if so, what motor did you have and mods? Feel any difference? Even worth a try?

I already tried a search and no one gave any real answers, no reason to flame, no need to hear it. This site is about sharing info and helping eachother not wasting others time.

Thanks,
Matt

 

I guess you could try one, But I think it is a money making gimmick. An electric motor with a fan on it just doesn't have the power to create the velocity needed to force induct the air into the throttle body. If I were you I would put your time and money into figuring out why your car is running rich and fix it. If you put an intake, supercharger or a turbo it will make your car run even more rich. hope this helps!

 

well, at the moment the motor has had head work, port and polish, higher compression and a few other things, and the cat is also not on the car. I do have an air intake and also a 4-2-1 header. Ever since the car has had the cat off it has ran very rich and had ridiculously poor gas mileage. Kinda hoping/thinking the elec. supercharger may actually help even it out. But i am a retard and did not think hard enough, so yeah you are right, in the end it will just become more rich. Thanks for you help man, i appreciate it.

Thanks,
Matt

 

I just read a thing the other day on these and it said that inorder to even make the same flow of air come from the fans taht are normally used on these "electric superchargers" you would need to have approx 1000amps going to the fan(@12V). They ripped apart one of them and it had pretty much two computer fan's. The only way that you could possibly push enough air to feed the motor was about 14 all set side by side! and thats not even creating any boost!

cliff notes: electric supercharger = crap, actually slows down intake velocity

 

there is only one at the moment that work's great... I don't remember the compagny but if you search on the FI forum you'll find it pretty easy, and no I wont search for you...
that model only provide 5 or10 second burst of boost, it feel's like Nitrous, the motor drive a compressor, and need's to recharge cause it push air trough an accumulator... so the pressure is enough high to create more power.
that seem's nice but it's the price of a real good turbo kit like RH or Greddy or even cash out a little more and you can get a full race...
to me it just look like: save you cash and get a real blower...

hope this help
Kranked

 

I finally ended up searching for you,
damn, I always do that even if I don't want too, I forgot some detail and all of a sudden I think... Damn I should find this tread to read it again...

anyway..
here it goes
https://honda-tech.com/zerothread?id=676915

another one
http://www.boosthead.com/home.php

Kranked

 

well if you want to risk destroying your motor try it out. If one of those fans break into pieces.... you get the idea.. I wouldnt waste my money on something like that.

 

What are you doing for proper fueling on this setup? Also, how do you know your running rich? Have you taken the car to a dyno, have EGT & A/f meters to measure, etc?

It sounds to me that you're running a fpr thats turned too high. Instead of adding more air (which is NOT the right solution), try tuning the car with an safc or the like on a dyno.

 

WEll a couple things,
My gas mileage sucks ***,
i dont have an aftermarket fuel sytem at all, anywhere
Its a d15b2 intake mani,
You can smell it REALLY bad

Matt

 

homemadeturbo.com did a test on them they suck!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 91hondacrx &raquo;</TD></TR><TR><TD CLASS="quote">WEll a couple things,
My gas mileage sucks ***,
i dont have an aftermarket fuel sytem at all, anywhere
Its a d15b2 intake mani,
You can smell it REALLY bad

Matt</TD></TR></TABLE>

It smells bad cause you have no cat on...install one. If your removed it for performance gains

INcreasing the intake velocity will probably not have an effect as the ECU is supposed to monitor the A/F and adjust fuel accordingly.

IMO you need to change your 02 sensor its probably running in "emergency mode" which is pig rich to not damage thje engine.

Electric blower fans will do nothing.

Your engine has 1.5 lt of displacement, at 6000 rpm that's 150 lt/sec of air @ atmospheric pressure.

Flow rate (F) = 150 lt / sec
F = 0.15 m^3 /second @ athmospheric pressure


If you want to increase pressure to 5psi this equates to a raise of 1/3 bar or ~34000Pa.

Assuming the compression is adiabatic

Pf x Vf^(5/3)= Pi x Vi^(5/3)

The volume is F x t (flowrate over time)
We know taht your engine will consume 0.15 m^3/sec @ whatever pressure you give it. So let Ff (final flow rate)= 0.15m^3/s. Ff is the initial flow rate (I.e. what needs to be sucked up by the fans)

Pf x (Ff x t)^(5/3)= Pi x (Fi x t)^(5/3)
134 000 x (0.15 x t)^(5/3)= 100 000 x (Fi x t)^(5/3)
134 000/100 000 x 0.15^(5/3) x t^(5/3)= Fi^(5/3) x t^(5/3)
134 000/100 000 x 0.15^(5/3)= Fi^(5/3)
Fi=0.179 m^3/sec

Lets find out how much power we need to compress 0.179 m^3 of air to 0.15 m^3

W=-Integral(P x dv) (1)

P x V^(5/3)= Pi x Vi^(5/3) (from the same equasion used above)
P = Pi x (Vi/V)^(5/3)

Replacing in 1

W=-Integral(Pi x (Vi/V)^(5/3) x dv) Where Pi is the initial pressure (athmospheric, Vi is the initial volume I.E. 0.179m^3/sec x time, V is the volume we integrate)

W =-Pi x Vi^(5/3) x Integral((1/V)^(5/3) x dv)
W = -Pi x Vi^(5/3) x [3/2 (1/V)^(2/3)]

The integral will be evaluated from the interval of 0.179m^3 to 0.150m^3 (to find the work required to compress this much air)

W = -Pi x Vi^(5/3) x [3/2 (1/0.179)^(2/3) - 3/2 (1/0.150)^(2/3)]
W = -100 000 x 0.179^(5/3) x [3/2 (1/0.179)^(2/3) - 3/2 (1/0.150)^(2/3)]
W = 3360.16 J

Since we were considering the volumes consumed in 1 second and this work represents the energy required to compress the same volume in 1 second we can say that the power required to compress this ait is 3360.16 W

@ 12 V it would require 280 amps to produce this much power (Power = Volts x Current)....which cannot be done without considerable strain on the electrical system (its actually more power than used to crank the car).

So no...it cannot be done.

Note that these calculations assume perfect effienciecy during the compression, adiabatic compression and that air is an idea gas....all of which are quite false, so the actual figgure would be higher.

 

^^^ My mind has exploded.lol

 

I had an exam on stuff wayy harder than this last week...my mind exploded then

 

You know I remember about 7 or so years ago where one of my friends had strapped a leave blower to his 4 banger Mustang and ended up blowing the motor from it. I never saw it actually on there but have heard from a few different people that it had worked??

 

explain it again!!!!!!!
you could of made that up and still made it ohhhhhh so good, lol.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">You know I remember about 7 or so years ago where one of my friends had strapped a leave blower to his 4 banger Mustang and ended up blowing the motor from it. I never saw it actually on there but have heard from a few different people that it had worked??
</TD></TR></TABLE>

^^^^ See above proof that it isnt possible ^^^^

(Allthought I could have screw up some math)

The displacement of a mustang is even larger so much more flow = more power needed.

Leaf blowers do ouput a fair bit of power tho since they can run at 120V, max output possible at 120V is 1800W....so you could probably get about 2.5 psi boost (on a civic...less on the stang) or so IF everything was perfectly efficient. Considering you ar talking about a ford, I'm willing to believe &lt;2.5psi blew the motor

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ORIGIN[AL &raquo;</TD></TR><TR><TD CLASS="quote">]explain it again!!!!!!!
you could of made that up and still made it ohhhhhh so good, lol.
</TD></TR></TABLE>

Basically I show how much air needs to be sucked in at 5 psi of boost....this is calculated using a few thermodynamic equasions 1 which is

PV^5/3 = PoVo^5/3

Once I have taht, then I can calculate the work required for the compression by another thermodynamic equasion: W = - Integral(Pdv)

Evaluating the integral for teh compression of the volume in 1 second yeilds the power required.

 

Well there are also GAS leave blowers I never knew if it was electric or gas.

 

taht _could_ be possible. Whats the displacement of the 4 banger stang?

2.5 lt? Using the above calculation, it probably requires soemthing like 4000W or so....could be done with a 6 HP leaf blower ...but I'd doubt it as I'm pretty sure they arent that powerful

 

I would have no idea??!! BUT I do know that there are some pretty powerful leave blowers out there I mean come on when they rate it at higher than like 50mph winds and such??

 

Waste of time and money.
Better use of time and money would be to fiqure out why your car is running rich.

Change your 02 sensor, if it's "new" swap it for another one.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">I would have no idea??!! BUT I do know that there are some pretty powerful leave blowers out there I mean come on when they rate it at higher than like 50mph winds and such??</TD></TR></TABLE>


Umm...more like 200MPh.

Worth nothing if you dont have the CFM to stick by it.

Not to mention that giving air a speed is nothing compaired to the work required to compress it.

Example.

I think air has a density of something like 1 Kg/m^3.
You are talking about 200 mph or roughly 90 m/s

To accelerate teh same ammount of air as before (0.179 m^3) to 90 m/s it would take

E=1/2mv^2
= 1/2 x 0.179 m^3 x 1 kg/m^3 x (90 m/s)^2
= 724.95 J

(this is assuming the air is not moving initially and that it doesnt compress during the acceleration...which is bs....but a good approximation)

flowing this much per second would take
724.95 W or a little less than 1 HP. This can be achieved with 60 amps at 12 V....quite bearable but nothing compared to the power required to compress the air.


Modified by Jet Black at 6:28 PM 12/17/2003

 

i don't know what to say

 

Reminds me...I made a small mistake / forgot to mention something above.

When I calculated the power required to compress the air, this assumed that the air was not moving when the turbo sucked it up....it also assumes the air DOES NOT MOVE when it exists...I.e. has no exit velocity...which we all know is false.

lets assume the turbo's exit velocity is 90 m/s...then the ammount of energy required would be more like: Power to compress + power to accelerate to 90 m/s

Or

3360.16 W + 724.95 W = 4085.11 W...even higher than my inital calculation! 340 Amps now @ 12 V...assuming perfect efficiency, adiabatic compression, that air is a perfect gas...blah blah blah....you get the idea.

Electric turbo = Tax on people who are bad at physics

I dont blame you tho....I did plug a leaf blower into my crx once to see if it did anything.

 

Jet Black's brain &gt; My brain!