2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

does horsepower increase when.....

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Old Feb 1, 2002 | 07:00 PM
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rotaryracer1's Avatar
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does horsepower increase when.....

you add an electric fan to our fc? how much will it add if any?
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Old Feb 1, 2002 | 07:12 PM
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You will free up a small amount of hp with an e-fan.

Please be aware though, that your e-fan might cause your alternator to not be able to charge your battery enough.

My 14 amp e-fan was enough of a draw as to make me need to go from my 70 amp, series 4 alternator, to a series 5, 80 amp alternator.

The series 5 alternator did do the job but, the fan was apparantly so much of a burden that the alternator failed within a month.

I went to the series 6, 100 amp alternator and, I haven't had a problem since.

Good Luck,
Mike
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Old Feb 1, 2002 | 07:31 PM
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just put a switch on the electric fan, you don't need it when you're moving at any decent rate of speed
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Old Feb 1, 2002 | 09:58 PM
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I found a fan that only draws 7 amps and still pulls 1850 cfm.
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Old Feb 1, 2002 | 10:17 PM
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The Black Magic that I have draws 13.9 amps when doing 2800 cfm.

My car has no extra stereo equipment and yet, the '86-'88 70 amp alternator was not enough, with the a/c running.

The '89-'91 80 amp was enough but, it broke after a month.

No problems with the '93+ 100 amp alternator.
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