This is some update for whoever watched my early thread.

Good news and bad news.

Bad news is the low cost e-supercharger won't work on your vechicle. Why? It can't flow enough air for your engine at high rpm, although it only cost less than half as much as eRAM. Go see their web site for yourself. They do sell lots blower. http://hq.hypermart.net/


Now Good news: I had resulted the length problem and successfully put only one eRAM (http://www.electricsupercharger.com/) in my 300zx and still keep the same gain as dual eRAM setup.

I figured out I can put the entire eRAM setup inside a K&N filter with 4" openning, (I use KN RF-1032) and use just one clamp to clamp them on my MAF sensor. And I also asked eRacing if I can replace the hull of my old eRAM with new unitbody plastic constructed hull, They agreeed. (The old one has some parts are glued together.)

Now I just use one eRAM and still have good power gain, and it's stealth so I can pass smoke check, isn't that great?

 

I have seen a lot of claims over the years for this type of product. What I have never seen is someone (other than the manufacturer) actually do a before and after dyno run and show proof that this thing actuall works. The amounts of air that are being flowed in a motor would require a lot more pushing power than the very small fans and motors that these products appear to have.

Until someone can actually put one of these things on a car and show measurable improvements I will catagorize these things the same as the tornado swirll thingy and other snake oil products.

 

Those things are marine fans. I can't believe people buy them and sell them as "electric superchargers". What a scam.

 

cut and paste following lines or do a search on internet



http://www.electricsupercharger.com/...percharger.com

 

Doesn't matter marine fan or leaves blower. As long as it can push more air than your engine needs, it can create pressure.

Once I surf across a site. This guy use a 12" radiator fan (2000cfm) to push air into his intake and gain some very good result. However, I don't think his method will fit on a tight car like Z.

 

People have on other cars and posted results in other car forums. These devices have always resulted in a loss of HP and torque in every independent test I have seen. For some of the ones advertised on Ebay you can even see the Hover logo.

 

A case study for those interested ....

 

Most electric leaves blower gives 400cfm, some less than 300cfm.

The guy was using a DC to AC converter, I don't think the blower is at full power as plug in to wall!!

Here are some site:


http://users2.ev1.net/~subaru/E-Ram_installation.htm

http://www.vintagebus.com/howto/e-ram/

http://kyle.berettatalk.com/supercharger.html

http://www.thumper300zx.com/modifications/eram/eram.htm

http://gawlowski.com/mr2/mr2_dyno.html

http://caddyinfo.netgetgoing.com/dyn...3eldo270hp.htm

 

The case study was an attempt at sarcasm. The person who created the page was spoofing the concept....

Never mind.....

 

Based on one dynotest someone posted, this thing is doing 15 extra horsepower or so. Now what if we put 4 or so of these inline? assuming enough battery juice, we could get 60 extra horsepower right? Lets say for arguments sake that as you add them , you lose a little bit, so maybe 45-50 extra horse, thats not really bad. I'm thinking 2 of the super electric chargers they sell in line together and you got a nice little power boost for around 1200

 

This post is out of control. I hadn't laughed that hard in a long time.

 

What is so funny, forced air is forced air, if you create pressure instead of vacuum, you make more power. There are dynotests to prove it works and yet you think its funny.

 

HAHAHAHAHA, wow this is great. the laws of physics ceased to apply to this thread.

first off, the fans do not spin fast enough to move enough air. the engine itself pulls more air than the fan can PHYSICLY move. particularly at HIGH RPMS, you know the area you race at? meaning the fan just becomes a spinning restriction, reducing hp.

if the fan spun fast enough to move air faster than the engine, then it could produce HP, but as was said, it DOESNT. the Z pulls 400cfm I believe. maybe more. so... no, its wont work.

as for 4 in a line. oh god.... I.... I cant stand to even think about this anymore, I think this post would make my physics professor cry. you are aware that if you take a fan, and put another fan in front of it, its not gonna double the speed of the air, the second fan just wont have to work at all. it may speed the air up SLIGHTLY, as in the first fan may not get it up to 100% of the speed since it is not a perfectly efficient design, but if the first fan gets it up to 95% of the theoretical max air speed, then a second might get it up to 96%... but its not gonna make it much faster, certainly not twice as fast. and the more you put, the less each one will help.

man... wow, you should really research things before posting them. or buying them. Im trying to think of a simple example...

ok. lets say your outside in a tornado. 100mph winds. through a tube. (use your imagination). now turn on a fan in the tube which moves air at a speed of 60mph ussually. the fan will slow the 100mph air down since air can only pass through it at 60mph, or the rotors block it. this is whats happening in the intake.

does this help at all? god I hope so.

 

The Z uses 400cfm as you said, this super e ram puts out 750cfm, so therefore it should increase power. I'm not a physics major, but I can read.

Rob



THE SUPER E-RAM is two e-RAMs mounted in series. Total max output is 1400 watts, 100 amps. This configuration still produces 3 lbs. of thrust at 750cfm, but increases the total pressure output to 1.7 PSI (losses due to axial-flow design account for the total pressure being under 2.0 PSI

 

i dont believe that they work as explained there. but hey do as you plese. I find it hard to believe this magical product isnt more popular if it worked.

I just hope you dont believe everything a company says about their own product

 

Bingo.

If this really worked, why would companies spend so much money designing products that gain only a few ponies on the dyno. Think about it, it doesn't make any sense. Tuning a modern engine is hardly an easy task.

-Jeremy

 

This concept could work, but not by using fans. If you used an electric motor to turn a centrifugal supercharger, it would definitely work. But, turning that electric motor would take a lot of power which would just stress your alternator which in turn would just put strain on your motor. I don't know how the losses would compare to a belt driven supercharger, but I would be willing to bet they would be equal if not greater.

 

What is a centrifical supercharger? a big fan. I think these electric fans will work, obviously not for a huge increase, but I think 10 horsepower is not unreasonble, for 600 bucks, thats not bad.

 

just think back to the last time you were at the track and you went up to some guy who just had an impressive time and you ask "wow, what you got in there" and he replies - "an electric supercharger" dose this sound a little funny it should because they don't work on any planet other than ebay

 

10hp for 600bucks??? jeez. I thought they were like 50$...

anyway. the other point brought up about alternator stress is true, youd run down your battery with it and that would make the alternator kick in and blah blah blah, you reduce your final hp. the same thing is sort of true about superchargers, they pull power from the belt but give more then they take, which is always nice. but they are a much more advanced design. hence why they cost a few grand.

and turbos, they work because they use wasted exhaust pressure to pressurize the intake air. a perfect design.