I have a new radiator and fans, and the fans are pulling more electrical current than the previous setup. My existing alternator is a rebuilt stock Motorcraft unit. I am inclined to stay with the stock wiring and external voltage regulator. I am seeking suggestions to get higher output from a different alternator or perhaps getting the one I have rewound.
Thank you.
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FWIW, I installed a Tuff Stuff 100 amp alternator in 2003, and it's still going strong. It was plug-and-play with OEM-type regulator. I assume there are others.
Ron
I had my stock unit rewound…. Works well, and no concerns on mounting or wiring. If you know a good shop, that’s something I would strongly consider.
Here's what I wrote about my alternator upgrade on my 5357 page. I couldn't find the receipt with the test data... it was from back in 2014 or so...
"With regard to the Voltage Regulator - I am still using my Ford 1G (3 Wire) alternator. I took it to one of the local shops (Luna Industries, Tucson, AZ 520.792.3080), and had it rebuilt. It tested at 78A output after the rebuild. The rebuild, which put better "guts" in the stock case cost $92. They replaced bearings, brushes, rotor, rectifier and field coils.
I saw no advantage (really) to converting to a 1 wire alternator, due to the inconvenience of figuring out how to rewire things. I can't remember now, but there was another issue with going to a single wire alternator - maybe it had something to do with the charge / discharge light?"
Steve, is the car discharging during idle or something due to the higher draw of the new fans?
Jon Haas has a neat 100 amp GM alternator set up that is very simple to install. It is a "one wire" type.
100 amps is a lot of juice. I can weld with 15 amps off of a house electrical outlet.
With 100 amps you can melt down a lot of tall buildings.
@panterapatt posted:Steve, is the car discharging during idle or something due to the higher draw of the new fans?
It is discharging at idle. After driving it on Drive Your Pantera day the voltage was down to about 12.2 the next day with the engine off. It should be about 12.9.
Powermaster makes nice alternators and gear reduction starters. I have both in my car.
Do you know which Powermaster alternator you used?
The alternator part number is PWM 8-47141. This is what I have on my Clevor motor. I spoke with a tech at Powermaster before I ordered it from Summit Racing.
