Rxxx-7_GSL-SE

so i was thinking of selling my rb header for a much better stainless SDJ header, i saw a dyno sheet that it made 147rwhp from a 12a gsl, and it only costs about $500 with shipping.

If im going to spend 200 ish on an rb true dual, might as well go big or go home with the SDJ one, i hear that they give atleast 10 more hp over the rb ones.

So how does the above tie in?

With the my header money i was thinking about buying a tiny electric blower than puts out 2-3psi.

yes im talking about the plastic ebay ones that mount between your afm and air filter.

Ya call them cheap off sure POS crap, but i just want cheap power that wont blow my engine up, i figure 2-3 psi wont do **** all if i only run 87 octane. After all VDI and SPI (fords cover of VDI) intakes create about the same about of boost from what i hear....

So i was thinking of getting an ebay electric blower and running a SDJ header.

that combination should put out about 170rwhp right?

like i think with just the magical SDJ header i would be close to 160RWHP, and add 2-3 psi, should put on a good 10-15hp.

Let me re-itterate myself:

-i dont care that its some made in timbucktuu place

-quality of the blower is not a concern, if i get a years use from it and the brushes burn out, id still be happy with the bang per buck

-i just want cheap power, and im going about it with low boost

lastly i think it might be hard to get the point of this post, but heres what im asking:

-2-3psi should be fine with 87? FYI my car is already running uber rich, it starts to constantly back fire like firecrackers at WOT over 4500rpm

thanks

Snack

fail..... if in theory it actually blows 2-3 psi then im sure you'll get a gain from it but the concern would be, does it actually blow enough to make the 2-3 psi or does it actually clog up you're intake with a worthless POS. i dunno what to tell you about the gas issue, but if i was you.... i'd just get a turbo swap. dont spend money in something that will give you very little gain.

RB_eater

iTrader: (1)

Oh god...

Those blowers most likely don't work at all. I've heard good things from the SDJ headers but 170rwhp? Not gonna happen.

MmSadda

iTrader: (2)

The eBay blowers are counter-productive, because they cause more drag via the alternator than they add power. You will have a net loss of power from installing one.

dean23

electric blowers DONT work. my friend got one for his celica (ricer piece of ****) and i made fun of him for weeks. it WILL jsut restrict as i know for a fact that my 12a sucks more air in than that little fan will push out.

Evil Aviator

Name one sports car, race car, aircraft, boat, train, or tractor-trailer that uses a cheapie electric blower to produce boost.

MmSadda

iTrader: (2)

dean23 has a good point. It didn't even occur to me, but really that little fan cannot move air as fast as the engine will on its own. Real turbos/blowers spin much faster than you'd guess.... that thing probably moves at a slower speed than air would move through the intake on its own.

Evil Aviator's example/analogy is a good one. If a $50 electric motor and fan could produce even a slight bit of boost, don't you think companies would be ALL over it, telling you that you can purchase a supercharged car for a mere hundred dollars more than a base model? If that was true, mainstream companies would be all over it. The thing is, it doesn't work, so no reputable company will produce or use that product.

Also, while it claims 2-3lbs boost, it doesn't say on what. I'm sure if you just hooked it up to a 12v circuit, let it suck ambient air, and let it blow on a piece of paper, it probably WOULD produce 2-3 lbs of pressure against that piece of paper. However, we're talking about installing it on an engine that sucks air on its own. Therefore, even if it WAS to produce boost, it wouldn't be anywhere near the 2-3 pounds of boost that they claim. Now, taking into account again the fact that the engine sucks faster than the fan can blow, it seems obvious that this would be more of a hinderance than an aid in your quest for power.

Anubis06

so i guess in the end... u are a fcku tard...dude save that money....and get urself something that would actually...BENEFIT ur car. not hinder it.

Rxxx-7_GSL-SE

ya i just remembered that a rotary sucks a lot more air than piston engines, so really at high rpms over 5000rpm the intake alone produces about 2-3 psi of boost.

So in theory i would need an electric blower capable of at least 5psi to see gains. I probably have to change the motor with a high rpm brushless motor paired with a lithium polymer battery pack.

MmSadda

iTrader: (2)

No, you are wrong. A stock n/a FC does not produce any boost. Boost is (correct me if I'm wrong) a measure of the pressure on the intake manifold[?] created by a forced induction system beyond what the engine would suck on its own. Boost is determined by the pressure generated on your car, not just how fast you can spin a fan in your intake. Don't bother trying to work with that unit, it will not get you anywhere.

Furthermore, there's a reason that actual blowers are mechanical. While they do create parasitic drag on the engine, that parasitic drag is less than that which is created when you try to put the extra load of a fan on the alternator, and then use that fan for power. Every time you change energy between different forms, you're going to lose some due to heat, etc. With an actual blower/supercharger, you just convert from mechanical to air power. With the electric fan, you convert mechanical to electric, electric back to mechanical, and then mechanical into wind. That is HIGHLY inefficient. That says something big, considering that superchargers are relatively inefficient anyhow.

hhn2002

WTF? GTFO
pardon the french but come on
NAs producing boost!? since when? at redline is when they produce the most vacuum.
NAs suck therfore they are always in vacuum.

blwn rtr 89'

iTrader: (5)

not to stomp your dreams.... but ...... in order for your "e-blower" idea to even be feasible you will need a massive BLDC motor, with a variable pitch blade, you can forget about mounting it in a squirrel box or gearing it for that matter.

not to mention the extra draw from the alternator, cooling of the BLDC motor.

i can think of 1million different reasons this will not work, or be cost effective.

look else where for a little bit of power NOT EBAY

MmSadda

iTrader: (2)

See? even 'blwn rtr 89'' knows this. Get it through your head, this won't work.

and HHN said what I meant to; NAs have vacuum, NEVER boost!

SouthSideSlider

my uncle had a nice elictric blower on his old 944 Porsche he said it was a nice addition. he sold the car awehile back in favor if a turbo 944 project car so turbo better but name brand E-Blowers not too bad on 944 (cant say the ame about 13B or 12A.

w0ppe

I think you might be better off using flex hose and hooking up your air pump if you still have it to your intake. At least that way, you don't have any defective parts. Go big or go home? Go turbo or go N/A I think is what you're after...

Chaotic_FC

dude
its not about PSI
its about flow
you want to know how much CFM the car pulls in stock

and then get a fan that pushes more

and thats only if you persist on doing this

really, just go get a turbo engine and drop it in

or do what i did, turbo your 6 port..

MmSadda

iTrader: (2)

....I HIGHLY doubt that your uncle installed $50 eBay blower on his Porsche 944 and made it faster..... does your uncle work for one of the eBay crap-parts companies?

...if, however, by "nice addition," you mean "useful for draining power," then yes. That'll accomplish that. Continue on.

MmSadda

iTrader: (2)

+1

MmSadda

iTrader: (2)

This guy has a point, with the bolded part. But an electric fan is not the way to do this.

And I had to edit Chaotic FC's post so that was an intellible read
instead of
like this.

ericgrau

iTrader: (1)

2.5 psi = 17.3kPa = 17300 Pa
1.308L * 6000rpm = 7848 LPM = 130.8 LPS = 0.1308 m^3/s

17300 Pa * .1308m^3/s = 2263 W
2263 W / 12V = 189 amps

A 100% efficient 2.5 psi electric blower consumes 189 amps.

FAIL. It is impossible for this product to exist.

MmSadda

iTrader: (2)

To put things in context, your car generates 60-75 amps. I don't recall the exact number... but anyhow, it's like a third of what you need to make that device produce 2.5 lbs of boost.

By the way, you're lucky. Usually we are quick to harass people relentlessly that ask these questions. While I'm being persistent, usually people are flat-out mean when this subject comes up.

Slow Rotor

You may as well run a hose from the intake to next to your drivers seat, that way when you want the extra power you can just blow into the hose, will have the same result and will be even cheaper than the blower.

MmSadda

iTrader: (2)

that guy is a self-proclaimed "rotor newb", and he gets the idea quite well.

That was funny as hell!!!!

misterstyx69

iTrader: (142)

Buy a leaf blower and put it on..That way when it doesn't Work(because it probably Blows as much air as an Electric..haha..Blower..) you wouldn't have Wasted money on your Car MOD!..and your Yard will look simply Fabulous!

SouthSideSlider

not a $50 Ebay Pos it was a E-ram (link for a FC one follows) no need to be a biatch

though this is not a good idea
http://www.electricsupercharger.com/...0&vehicle=3414
E-ram has ones that actually work but $300 for 8hp i dont think so.

also i second the leaf blower thing actualy i think i saw that on a ricer around here.