Ongoing charging issues

Posted by Rockabilly On 2023/4/5 6:37:52
Hello everyone! I'm hoping that you guys can help shed some light on my charging issues because I'm struggling. Car is a 1951 300 with the 327.

Symptoms: at idle the car reads about 6.3-6.4 volts. At approx. 3k RPM the car reads about 6.4-6.5 volts. If I turn the headlights on, the volts start to plummet and it cannot keep up. I keep the car on a battery charger/maintainer designed for 6 volts when I'm not driving it.

Work performed so far: replaced 6v battery, replaced generator with reman and polarized it (at least I believe I did by jumping the bat and arm terminals on the regulator), replaced primary wires from arm to regulator, field to regulator, regulator to battery/starter. I also replaced the regulator itself.

Replacement regulator that was new old stock:
Original Image

Reman 6 volt 45 amp generator:
Original Image

Most, if not all, of the existing wiring is crunchy and falling apart, so I am slowly working my way through the whole system replacing with new color coated wire, but this is a tedious process and I haven't completed it yet.

I just want the car to charge correctly and I am stumped. Any advice on where to go from here? This is the first positive ground system I've worked on.

As always, I appreciate everyone's time and input. Thank you in advance.

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