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Joined: Sep 2000
Posts: 9,602
Hard-core CEG'er
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Hard-core CEG'er
Joined: Sep 2000
Posts: 9,602 |
Originally posted by sleeperv6: well some cars are equipped with blower motors so the draw should not be a problem, I may not be correct on the draw...i just know that it is much more than those advertised on ebay.
Yes you are off with your thinking of the required current draw to sustain any amount of boost pressure generated over the engine's natural CFM draw.
The "blower" motor on the car draws a small amount of current and pushes a handful of cfm and does it with no real resistance.
It should not really be compared to a fan that could generate boost on top of an engine that is naturally pulling in 300 cfm all by itself (meaning said fan needs to push more than 300cfm and do it under heavy load! Then be able to sustain that output!)
What type of power draw is required with a very efficient electric motor:
"If an electric fan pushes 750 cfm at 1 psi and runs on 14 volts at 50 amps, then it will use 700 watts of power." (ERAM's stats IIRC - the Ebay fans I've seen are beyond junk!)
At 100% efficiency this will generate roughly a 10-13HP increase at the crank on the SVT engine. (8-10 wheels) Then factor in the alternator will draw about 2HP back to supply the electricity. The battery takes the brunt of the "initial" current draw. Sustained draw comes directly from the alternator though!
So "technically" you could get a maximum gain of 6-9 wheel HP at 100% efficiency for ~$300. Not bad HP per dollar for our car really.
However make sure you have a good quality battery (optima for instance) to help with the added strain on the electrical system. Also alternator replacement interval may be sooner too.
The ERAM is not a "joke", though it is not as awesome as the information would make it look.
The EBAY junk is a joke. Plain & simple.
2000 SVT #674
13.47 @ 102 - All Motor!
It was not broke; Yet I fixed it anyway.
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