Electric Supercharger/Super Bilge Blower???
08-02-2005, 01:01 PM
#61
Captain Obvious
Super User
Super User
The e-Ram has been debated many times over the years on here. If I remember correctly, the total dyno gains are in the 5~7hp per unit. The two would add around 10~15hp to the 928.
27hp/eRam is a little too optimistic.
The problem with this technology is the limitation of the amount of air it can push. The demo video is impressive to look at. However the volume of boosted air is just not enough to make it a real supercharger of any kind.
If you ever have a chance to put your hand infront of a SC while the engine is revved up, you'll see what I mean about volume requirements.
27hp/eRam is a little too optimistic.
The problem with this technology is the limitation of the amount of air it can push. The demo video is impressive to look at. However the volume of boosted air is just not enough to make it a real supercharger of any kind.
If you ever have a chance to put your hand infront of a SC while the engine is revved up, you'll see what I mean about volume requirements.
08-02-2005, 01:05 PM
#64
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IMO,
It looks liek they have two different kinds. The regular one that puts out a few ponies each at 1 psi and then the "super" one that's 1.7 psi each which puts out more.
It looks liek they have two different kinds. The regular one that puts out a few ponies each at 1 psi and then the "super" one that's 1.7 psi each which puts out more.
08-02-2005, 01:08 PM
#65
Three Wheelin'
Originally Posted by Herr-Kuhn
That is hogwash there is no way that device can flow enough mass air to make the difference worth the time and money.
http://www.electricsupercharger.com/...928S4_dyno.JPG
I guess the hyper-paranoid-conspiracy-cynic might suggest the dyno sheets are doctored-if not totally manufactured- but the e-ram guarantee and return policy seems pretty reasonable.
08-02-2005, 01:13 PM
#67
Three Wheelin'
Originally Posted by Herr-Kuhn
It is not forced induction, just a set of fans!
08-02-2005, 01:15 PM
#68
Three Wheelin'
Originally Posted by Imo000
Fishy,
Can each super eRam create 1.7lb of boost on a 928 at WOT? That's alot fo air to push for a fan.
Can each super eRam create 1.7lb of boost on a 928 at WOT? That's alot fo air to push for a fan.
08-02-2005, 01:17 PM
#69
Captain Obvious
Super User
Super User
Chad,
Air VOLUME is the key when it comes to forced induction.
If you really want to SC your car for cheap, buy a SC and make the plumbing and bracket yourself. I did mine for under $1000. Although it's not as sophisticated as all the other kit’s on the market, but for the little money I spent it’s a real bargain. It makes around 6-7lb of boost and the difference (approx. 100hp) is certainly noticeable even without a dyno.
Air VOLUME is the key when it comes to forced induction.
If you really want to SC your car for cheap, buy a SC and make the plumbing and bracket yourself. I did mine for under $1000. Although it's not as sophisticated as all the other kit’s on the market, but for the little money I spent it’s a real bargain. It makes around 6-7lb of boost and the difference (approx. 100hp) is certainly noticeable even without a dyno.
08-02-2005, 01:18 PM
#70
Drifting
We have a customer that decided to try them out despite our objection. He put two in series and connected them to his MAF. His best dyno without and with varied by 3hp. I cannot say for sure if the fans developed any horsepower or not. His ***-o-meter said that they helped a little bit, disproven by the dyno.
On the other hand, there is an electric supercharger that shows some promise.
http://www.boosthead.com/home.php
If you see what the electrical requirements are for his systems, you will understand how these fans will not provide much, if anything at all. The Thomas Knight big boy will provide up to 8psi on a 3L engine but requires it's own electrical system with multiple batteries and a 200 amp alternator. Maximum time on boost, 15 seconds. Efficient? NO. Fun to play with, could be.
On the other hand, there is an electric supercharger that shows some promise.
http://www.boosthead.com/home.php
If you see what the electrical requirements are for his systems, you will understand how these fans will not provide much, if anything at all. The Thomas Knight big boy will provide up to 8psi on a 3L engine but requires it's own electrical system with multiple batteries and a 200 amp alternator. Maximum time on boost, 15 seconds. Efficient? NO. Fun to play with, could be.
08-02-2005, 01:24 PM
#71
Administrator - "Tyson"
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Originally Posted by Ketchmi
Maximum time on boost, 15 seconds. Efficient? NO. Fun to play with, could be.
08-02-2005, 01:29 PM
#72
Three Wheelin'
Originally Posted by Imo000
Chad,
Air VOLUME is the key when it comes to forced induction.
If you really want to SC your car for cheap, buy a SC and make the plumbing and bracket yourself. I did mine for under $1000. Although it's not as sophisticated as all the other kit’s on the market, but for the little money I spent it’s a real bargain. It makes around 6-7lb of boost and the difference (approx. 100hp) is certainly noticeable even without a dyno.
Air VOLUME is the key when it comes to forced induction.
If you really want to SC your car for cheap, buy a SC and make the plumbing and bracket yourself. I did mine for under $1000. Although it's not as sophisticated as all the other kit’s on the market, but for the little money I spent it’s a real bargain. It makes around 6-7lb of boost and the difference (approx. 100hp) is certainly noticeable even without a dyno.
And I don't care to SC my car for cheap, I just want to discuss the merits and downsides of the e-ram. A lot of folks shouting "Snake Oil!" without knowing the facts and claims of the device are really annoying.
There is no doubt that the e-rams will not produce the power gains of a belt-driven supercharger, but for some applications, could the e-ram be an effective addition?
Because it only runs at WOT, it seems a better racing app than street device.
08-02-2005, 01:34 PM
#73
Drifting
Uh Chaad...
I just wrote about a 3hp (gain) difference with the E-ram on a dyno. Is it worth it? Was it just the difference in the car temp or dyno? Unproven but it does prove that it's not seeing any useable boost. On a 928, 1psi of boost is worth in the area of 20+rwhp, where is it at?
I just wrote about a 3hp (gain) difference with the E-ram on a dyno. Is it worth it? Was it just the difference in the car temp or dyno? Unproven but it does prove that it's not seeing any useable boost. On a 928, 1psi of boost is worth in the area of 20+rwhp, where is it at?
08-02-2005, 01:39 PM
#74
Three Wheelin'
Originally Posted by Ketchmi
We have a customer that decided to try them out despite our objection. He put two in series and connected them to his MAF. His best dyno without and with varied by 3hp. I cannot say for sure if the fans developed any horsepower or not. His ***-o-meter said that they helped a little bit, disproven by the dyno.
On the other hand, there is an electric supercharger that shows some promise.
http://www.boosthead.com/home.php
If you see what the electrical requirements are for his systems, you will understand how these fans will not provide much, if anything at all. The Thomas Knight big boy will provide up to 8psi on a 3L engine but requires it's own electrical system with multiple batteries and a 200 amp alternator. Maximum time on boost, 15 seconds. Efficient? NO. Fun to play with, could be.
On the other hand, there is an electric supercharger that shows some promise.
http://www.boosthead.com/home.php
If you see what the electrical requirements are for his systems, you will understand how these fans will not provide much, if anything at all. The Thomas Knight big boy will provide up to 8psi on a 3L engine but requires it's own electrical system with multiple batteries and a 200 amp alternator. Maximum time on boost, 15 seconds. Efficient? NO. Fun to play with, could be.
Why did he run them in series? E-ram does not suggest or recommend that setup for our cars (or any that I'm aware of). Did he try them in parallel, and with what results?
08-02-2005, 01:44 PM
#75
Three Wheelin'
Originally Posted by Ketchmi
Uh Chaad...
I just wrote about a 3hp (gain) difference with the E-ram on a dyno. Is it worth it? Was it just the difference in the car temp or dyno? Unproven but it does prove that it's not seeing any useable boost. On a 928, 1psi of boost is worth in the area of 20+rwhp, where is it at?
I just wrote about a 3hp (gain) difference with the E-ram on a dyno. Is it worth it? Was it just the difference in the car temp or dyno? Unproven but it does prove that it's not seeing any useable boost. On a 928, 1psi of boost is worth in the area of 20+rwhp, where is it at?