Hello, I have a '46 Ford Super Delux coupe, basically all original. I am gathering parts to convert a GM SI alternator to 6 Volt, positive ground. Do not want to convert to 12 Volt because car now has 6 volt auxiliary fan, fuel pump and 2-speed wipers. So would not want to replace all those, plus the 12 V conversion. Questions are, what do I do with the stock voltage regulator on the firewall, and where do I run the wire from the (1-wire) alternator? If the wire from the alternator goes to the battery post on the starter solenoid, will gages, lights, horn and everything else work? I have added a fuse block and 6 volt relays for the fan, fuel pump and wipers. The fuse block gets its input from the starter solenoid.
This may be what you want as it converts a 10-SI to six volt one wire. eBay item number:132055586790 This kit is more money but has the regulator, diode bridge and trio and small parts https://store.alternatorparts.com/10si-series-6volt-positive-ground-alternator-conversion-kit.aspx Again one wire but you may not get away from that. Or they have the complete alternator in either blasted finish or chrome and it appears that they have been doing the six volt conversions for farm tractors for a long time plus all the other alternators they do. Not a mickey mouse outfit when you look at their home page Scroll down to six volt pos ground. https://alternatorparts.com/6-volt-alternators-negative-positive-ground.html They show the positive ground conversion kit in that list too. Farm equipment alternator conversions is where one wire alternators started in the first place for magnito ignition or diesel tractors and equipment that did not have key switched ignition systems.
Just get a Powergen 6V Pos. ground. It'll look stock, and work great. Just run a cable from it to your battery post or put a battery lug on the firewall somewhere. I have one on the 276 Hemi in my roadster, it's well worth the small investment. They are internally regulated, just ditch the stock regulator. I used my regulator as a connector lug to feed the rest of the car. Mine is 12V but you can get a 6V unit as well. (old photo)
Here is another source: https://www.qualitypowerauto.com/item_24/6-Volt-Alternators-Positive-Ground.htm
X2 on the power gen....6V positive ground....been running one for years trouble free and even charges at idle with the headlights on....
If the one-wire output connects to a main power from the battery, it will provide for all components. If that is at the starter or the regulator, it will work. I understand why you are keeping it 6 volt. I also would suggest going with the OE look of the powergen over a late model alt, but it's your money, your car.
To me a gm alternator just doesn’t look right on a flathead, I like the power master alternator, no need to reinvent the wheel.
Unless you are on a budget........ https://www.summitracing.com/parts/...CRWkeSgKTZASNEdKIiAAjEgGi2lSdxQemkEl7DMAK9u9q
I'll put it right out front, Not all of us are independently wealthy and have the extra money to spend 400 bucks on an alternator that pretends to be a generator just to please a few people. 20 bucks for a regulator or 65 for a kit to convert a 10 or 12 SI alternator that most likely you already have is in the most guys can afford it category. To me it is damned disrespectful to tell someone who asks a simple question that he has to go spend four hundred frigging dollars just to make you happy rather than do what the budget allows. If he was shooting for totally period correct he would be asking for that and if later he decides to go for a more period correct look and ratholes the coin to get the big buck item that is ok too.
Yeah, but some of us do not have the funds to "look right". Lot of price difference between a rebuilt GM alternator and a Powertmaster. For the same results. Ben
I understand the limitations. But a cheaper option is put new bushes and bearings in a old used generator, there should be some around with good winding and armature, I am very cheap by nature.
And that applies to the V8 and the Banger. I figure I'll have at least a grand in machine work on my B block & C crank.
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