I've been using a regular Power Master Alternator.  No complaints.


Lawrenceville, GA

New regulator came in. Light still won't go off. Did some testing and could not come up with a definate answer. Have to agree with the alternator fans. Hate to do it but I'm too old to drive myself nuts with it. Ordered a Powermaster Alternator tonight. Looks like a generator but is a 90 amp alternator. Should bolt right on and still look close enough to original for my purposes. Anyone here using th Powermaster?

This is so true. I've been around electrical problems my whole life, A friend's car was close to a lightning strike which depolarized the generator from the huge magnetic field.

I agree with Phil.  I got tired of yearly rebuilt generators and starters.  Went to modern stuff and no problems there in probably 16 years of daily driving now.


Lawrenceville, GA

I had similar issues with my 55 TBird 12 volt system.  Went through a number of generator rebuilders and assorted problems. I know you don't want hear this, but it's time to convert to an alternator.  Generator rebuilders are dinosaurs. I used the Casco alternator kit and I couldn't be happier.  My old voltage regulator is still in my car for looks.  Keep the original parts for the next owner and keep your sanity. 

Generator was recently rebuilt and had it off and checked back in September last year when I last had issues. New regulator supposed to be here Thursday. If that doesn't work will do some more testing. Have had regulator issues several times recently.

Generator was recently rebuilt and had it off and checked back in September last year when I last had issues. New regulator supposed to be here Thursday. If that doesn't work will do some more testing. Have had regulator issues several times recently.

The manual has some quick diagnostic tests to isolate the problem to either regulator or generator. Or the wiring. "Full fielding" tests the generator to see if it is producing rated voltage output. Sometimes it's something simple the brushes hang up in the holders. They are a type of vintage system that are just reliable enough where I forget the details and have to drag the manual out to re-familiarize myself on how everything works.

Are you sure it's a regulator problem?  Could  be the Generator. Maybe a stuck brush or something?  If you have a factory manual, it gives procedures to check the system as I recall, although some equipment may be needed?. U may be able to ascertain the problem.. In my case years ago, it was  defective (to small) aftermarket wiring & an Amp guage that was badly overheating.. Re wired & converted to a Volt meter & the problems went away.. Good luck.


Paul

The manual gives a way to check gen voltage while still on the car. I don't remember right now. Bought one from NAPA 6 years ago and voltage on a good charged battery runs between 13.7 and 13.9.
I started adjusting regulators in 1963 when I worked the battery line at a Sears Roebuck. After each adjustment you must put back on the cover to check voltage. the reading with the cover off is different.  

56 Vic, B'Ville 200 MPH Club Member, So Cal.