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Reload Thread: High Output Alternators / Gas Mileage

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    Icon32 High Output Alternators / Gas Mileage

    I've been told that installing a high output alternator or getting one rewound would drop the gas mileage on any vehicle........"IS THAT TRUE?" OF course that doesn't matter to me cause I'm getting one installed anyways........

    "JUST CURIOUS"



    Make it better......




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    denim's Avatar
    denim is offline SSAudio.com



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    from what I remember when I had my big alt installed my gas milage was not affected, but I also put an underdrive pulley on it to get out even more amps from the alt





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    maylar's Avatar
    maylar is offline Electrical Weenie



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    High output alternators just have bigger wire and beefier rectifiers and regulators. The amount of extra power to run them is minimal. However you should be aware that power is power... 746 watts = 1 h.p. The power to run your system comes from the alt and the power to run that comes from your motor.



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    Moocow16 is offline Master of Puppets



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    um, denim, i don't mean to sound rude or anything, but how do you figure!?!?!? when you put on underdrive pullies, they underdrive the alt and the water pump, freeing up hp for the engine. which means the alt and the water pump turn slower, making less power and pumping less water. that's why they're usually used stricktly for racing, because your engine will run hotter and you won't make as much power, and when your in a 1/4 mile race, who needs to worry about your engine overheating, your only there for, at most, 14 seconds.




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