sick620 Posted January 25, 2013 Report Share Posted January 25, 2013 In an old 521 that I owned I had an aftermarket alternator in it from a chevrolet. It was Internally regulated, to better the movement of outgoing power I wired a large gauge wire from the alternator output, to the starters input, giving it a nice thick wire to get its power to the battery. And it worked great. Fast forward, with my current 620 I have wanted to do this same mod. But my 620 is a stock type alternator and its externally regulated. Will this work or will it fry something. Im not really sure how a voltage regulator functions. Will my wire be running really high/really low power? or will it be running at a good range? Thanks Quote Link to comment
ggzilla Posted January 25, 2013 Report Share Posted January 25, 2013 The 620 already has a large gauge wire connected to the battery POS terminal via the Fusible Link for fire safety. It's much improved over the 521 and can handle 50A. Just make sure the terminals are very clean, and put a bit of grease on them to prevent corrosion. 1 Quote Link to comment
sick620 Posted January 25, 2013 Author Report Share Posted January 25, 2013 but could I do this if I absolutely wanted to? Will it work in theory? Quote Link to comment
ggzilla Posted January 25, 2013 Report Share Posted January 25, 2013 Sure you could. You would lose fire protection, and have a less direct path for the power to get to the battery, but it can be done. 1 Quote Link to comment
sick620 Posted January 25, 2013 Author Report Share Posted January 25, 2013 the voltage regulator operates prior to the alternator outputing power? How does that mysterious thing operate? ive tried looking at diagrams but I dont get it... Quote Link to comment
ggzilla Posted January 25, 2013 Report Share Posted January 25, 2013 External Voltage Regulator works exactly the same way an Internal Voltage Regulator works. No difference except the small wires. The output wiring is exactly the same. 1 Quote Link to comment
sick620 Posted January 25, 2013 Author Report Share Posted January 25, 2013 Ok good to know thanks, and anytime ive ever had wiring questions you are always quick to answer and knowledgeable I thankyou! :) Quote Link to comment
DanielC Posted January 25, 2013 Report Share Posted January 25, 2013 The alternator has only a few main parts. There is a Stator, it is just a bunch of looped wires, hooked up to a set of diodes. The other side of the diodes hook up to the big positive post on the alternator. A diode is just a one way electrical valve. The stator is a round part, with a hole in the middle. Inside the stator, is the rotor. It is an electromagnet, and it is the part that is turned by the v belt. The voltage regulator controls how much voltage is sent to the rotor. When the battery voltage gets too high, the voltage regulator cuts back on the amount of voltage going to the rotor, and the battery voltage coming out of the alternator falls. When the battery voltage is too low, the voltage regulator applied more voltage to the rotor, and the battery voltage goes up. Quote Link to comment
ggzilla Posted January 25, 2013 Report Share Posted January 25, 2013 Technically, the Voltage Regulator only regulates the output voltage, by turning the rotor current on/off to achieve this. It doesn't regulate the input voltage. But yes, they are a very simple, reliable device. The ones with internal regulator only have four wires. Even the GM alternators use three external connections (BAT/A, ground, and dash lamp wire), same as the newer Datsun alternators (which connect the A to the S wire in the wiring harness). Quote Link to comment
510rob Posted January 25, 2013 Report Share Posted January 25, 2013 http://www.delcoremy.com/documents/alternator-instruction-sheets/10si,-12si---15si-installation-instructions_105116.aspx Quote Link to comment
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