ShellDude

iTrader: (12)

I know I'm late to the party but that diagram doesn't cover all MYs and definitely not the 2004s and 2005s.

xxoo wcs

wcs

iTrader: (2)

lol
Got me





I had to start somewhere

ShellDude

iTrader: (12)

so has everyone installed their new electric "boosters" yet?

Jcola

So it seems that some people are on the fence about this, in that case I think I might try this out. Depending on the cost of this system it may not happen at all. I will say that if I were to get it I'm gonna take my sweet *** time with it, definitely not anything I'm gonna rush into and just slap it on. Probably the best thing to do is just wait until it's been put on other small engine cars and see how it works out before trying it on an 8.

ShellDude

iTrader: (12)

You're referring to the electric powered intake fan/blower correct? The one that is going to net you 5psi of boost at WOT?

I skimmed through the thread the other day and saw a handful of links. Please specific with the one you are choosing.

wcs

iTrader: (2)

Flame suit engaged.
I feel the need to respond.
I'm not the best at reading these things .. and I don't have much time but I'm going to take a shot at this.

First the efficiency range isn't exactly that good.
As Brettus indicated the RPM of the device is 20k rpm yet this compressor map is indicating +40k rpm

The compressor map shows it flows between 0.7 lb/min (below surge) and 17 lb/min (before choke)
That's 5.29 g/s to 128 g/s
That's roughly for our engine idle to 4000 rpm WOT .. give or take

With a Pressure Ratio of 1.3 then remove thermal efficiency of the compressor.
I would be surprised if it made 5 psi or 19.7 psia

Furthermore as stated by Brettus (and his solution) if you install this device in the main intake system it will IMO restrict airflow in the upper rpm range and if the device is left in the ON position during the WOT run you're likely risking Choke which could potentially ruin the compressor.

2c

Gotta run

Will be back in a few hours to read the flames .. cheers

ShellDude

iTrader: (12)

TBH, I wasn't sure if we were baiting jcola or not. jcola, I've got to come clean. anything positive I've suggested as far as you seeing benefits with this type of setup has been 100% pure sarcasm.

Jcola

The system (phantom S/C)was designed to keep a little more then atmospheric pressure at high rpm range. then again that totally depends on the engine and how much air it draws in at its highest rpm. In that case then yes if the phantom system wouldn't be able to keep up at all.

also yall say that you need at least 40k rpm of a compressor to make any type of boost. Wouldn't that depend solely on the gearing ratio with in the the S/C itself in this case a real S/C like procharger or rotrex or vortech blowers?

Brettus

iTrader: (2)

It's doubtful there is any gearing on that motor so ... if that map is correct and the motor speed they state is correct - it wont even flow enough air to make boost at low rpm let alone keep up at high rpm.

Jcola

oh yea you are correct brettus there is not gearing at all, i am pretty sure the shaft of the motor is connected directly to the compressor wheel.

Brettus

iTrader: (2)

Something like this is more like it :


http://www.phantomsuperchargers.com/fts-tq25024v.html



WCS : I doubt that chart you posted has anything to do the the SC from the ebay add - i found the same chart on the site above and they are def not the same item.

So : the Ebay fan posted about will do nothing and is just junk . The SC from the above site mite work as we have been discussing .

wcs

iTrader: (2)

That rpm is coming from their posted compressor map

ShellDude

iTrader: (12)

so that's a little different.... I think the anderson power pole connectors will easily add 5-10hp alone

Seriously though ... separate power, proper placement, a true high RPM brushless motor and controller and you should see a couple HP. but that ebay work of art is just garbage.

Brettus

iTrader: (2)

The ebay SC that RIWWP linked early in the thread had no compressor map that I saw ?

Brettus

iTrader: (2)

Here is the map from the link above :





This one will just about flow enough to keep up with the engine at high rpm (210g/s) so useless for top end but I think it would definately boost the midrange if setup on the vfad as mentioned earlier .
Maybe even change the vfad opening rpm to around 7000 to get the most out of it .

They get decent results with a 2.0L piston engine but the 1.3 rotary flows much more air than one of those . Because of the high airflow of a rotary, you are at a big disadvantage trying to make an electric SC work on a rotary .

Jcola

Actually I was thinking that once obtaining the phantom kit, that you could replace the brushless motor with an even better one. So that's where you could get a higher rpm from brushless technology. Yea it would draw more amps, but you could just add another battery in parallel to add more amps per hour to the system.

wcs

iTrader: (2)

Sorry Brettus
I should not have posted from my phone.

I'm a bit confused but FWIW I was referencing this compressor map and RPM

TECH - New site

Brettus

iTrader: (2)

Yeah - not the map for the EBAY POS SC .

But we are no same wavelength now

Jcola

Jcola

here is a system on a mazda 3, yes i know not the same as rx8 but this proves my point that the system can be put on any small engine vehicle.

Jcola

boost gauge working!

billjoebob

What happens when one of those plastic fins warp from all of the heat, then break off, and then get sucked into your intake? What if it made it all the way into your engine?

alnielsen

iTrader: (4)

Plastic Fins, from the air filter box? There are 2 screens between there and the throttle body.

wcs

iTrader: (2)

Damn ... did that actually show boost?

Jcola

lol very little boost, but it did have boost

that's what I am saying; I think its just enough to make up the 8's HORRIBLE low end torque without doing any major modifications that is.