Altenator modification, Wild eyed idea |
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Altenator modification, Wild eyed idea |
Joe Ricard |
Mar 24 2005, 07:26 AM
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#1
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CUMONIWANNARACEU Group: Members Posts: 6,811 Joined: 5-January 03 From: Gautier, MS Member No.: 92 |
So my co-worker and I just had a wild idea. how hard would it be or better yet can I unplug the voltage regulator during and autocross run without hurting anything?
Benefits would be the altenator is free-wheeling vs stealing a couple HP. Should help acceleration too???? |
lapuwali |
Mar 24 2005, 10:54 AM
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#2
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Not another one! Group: Benefactors Posts: 4,526 Joined: 1-March 04 From: San Mateo, CA Member No.: 1,743 |
The actual HP loss is easy to calculate. Ignition is about 3 amps. The fuel pump is about 4 amps. The injection system is another 3 amps. Let's say that's all that's running. 10 amps @ 14v is 140W. 746W in 1hp. The alternator is roughly 50% efficient, so it's consuming 280W, or 0.38hp. More than Paul's guesstimate, but still not enough to make any difference. The stock alternator running full bore will consume about 2hp. You don't need to pull the regulator. Just pull the field wire (the one that runs through the G bulb in the dash). Put a switch there, and the alternator will be disabled when it's off. No current generated, so no worries about melting any diodes in it. |
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