Electric Fan? - Toyota Supra Forums

04-29-2008, 11:35 PM

sd88supra

3" Exhaust

Join Date: Oct 2005

Location: San Diego, Ca

Posts: 190

Quote:

Originally Posted by carfanatic89

Oh by the way, 6 of one half dozen of the other, your battery doesn't just make voltage, its supplied from the alt. and that gets its energy from the crank and the rod to the piston taking power and gas milage. It would probably be more efficient but still pull power and gas milage from the motor

Yes, but the energy the alternator needs to resupply voltage in the battery is much lower than the energy required to operate the fan clutch. Gas mileage difference is hardly noticeable if at all, but cooling efficiency is what we're after. I was referring to the battery because a 30 ampere fan can easily drain a crappy battery.

__________________
-1987 5 spd N/A with TEMS: low miles! All stock with the exception of electric fans and an '89 front bumper, Yokohama 225/50/16 with stock rims. It's a mess and in the garage.

-1987 5 spd Turbo with TEMS: miss-matched tires, needs lots of work, but it runs! Project car.

-1988 N/A auto targa: all stock except 18" rims with Falken 265/35/18 in rear and 225/35/18 in front; daily driver.

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