That so-called 300A alternator may be not a real one. The tricky is the smaller pulley, which make the alternator spin faster at idle and generate more juice at lower engine RPM.
The trade off is reducing the alternator life-span. At high alternator RPM, the brush and slip ring can be wear out at short time.
The one you bought has same casing size as OEM one, so the stator winding can not be bigger than OEM's, and the winding can not be made with thicker wire.
Also, when alternator out put reach above 200Amp, the pulley should be clutch style, otherwise the rotor could shot in short time.
Take a look at clutch pulley of Ford Crown Victoria Police cruiser, the alternator is 260 Amp.
The trade off is reducing the alternator life-span. At high alternator RPM, the brush and slip ring can be wear out at short time.
The one you bought has same casing size as OEM one, so the stator winding can not be bigger than OEM's, and the winding can not be made with thicker wire.
Also, when alternator out put reach above 200Amp, the pulley should be clutch style, otherwise the rotor could shot in short time.
Take a look at clutch pulley of Ford Crown Victoria Police cruiser, the alternator is 260 Amp.
