Woo Hoo

[TrailBeast]

Never knew these existed until I saw one being installed on YouTube.

100 amp internally regulated, ONE wire squareback.
No more regulator or related wiring.

 

[cudamark]

Simple until you melt the bulkhead connector while under a heavy electrical load.

 

[MDchanic]

Not endorsing or criticizing this particular alternator, but here's a link to that image:

https://www.powermastermotorsports.com/alt12_ch_one_wire.pdf

- Eric

 

[67Dart273]

A VERY important question, is, "did they solve" the low RPM low output thing with the old girls? That is one huge advantage of the new Denzo/ etc, Dodge RAM, etc etc.

 

[ProjectBazza]

A VERY important question, is, "did they solve" the low RPM low output thing with the old girls? That is one huge advantage of the new Denzo/ etc, Dodge RAM, etc etc.

I have Powermastwr alternators in both of my old trucks, and to relate my experience to your question: I had to change the pulleys (albeit slightly) to get them to charge adequately at idle. The first pulley I got from Powermaster directly, and the second was a JY pull-off I had laying around.

But other than that they’ve been great.

 

[67Dart273]

I have Powermastwr alternators in both of my old trucks, and to relate my experience to your question: I had to change the pulleys (albeit slightly) to get them to charge adequately at idle. The first pulley I got from Powermaster directly, and the second was a JY pull-off I had laying around.

But other than that they’ve been great.

Actually, for me that complicates the question. If you have to spin the alternator faster, just how much? Back in the days I had my 440-6RR, I once figured the ratio of the crank pulley to the alternator, which was about FOUR TO ONE. This means that if you spin the 440 up to 6K, the alternator is turning TWENTY FOUR THOUSAND, unless the belt is slipping!!!

I actually ruined a couple of alternators from excessive RPM

 

[Clelan]

I have that exact alternator on my Duster. They are great. Of course you cannot run them through the factory amp meter, but unless you are a resto guy, you should bypass that anyway.

Cley

 

[ProjectBazza]

Actually, for me that complicates the question. If you have to spin the alternator faster, just how much? Back in the days I had my 440-6RR, I once figured the ratio of the crank pulley to the alternator, which was about FOUR TO ONE. This means that if you spin the 440 up to 6K, the alternator is turning TWENTY FOUR THOUSAND, unless the belt is slipping!!!

I actually ruined a couple of alternators from excessive RPM

Can’t answer that one, sorry. Too much time has passed, but based on what I “think” I remember it went something like this: When my truck (‘68 F250) was idling (800 RPM or so) I was getting barely 13 volts, but if I revved it up to 1,000, I got 14/14.5. I called Powemaster and explained the situation, and the sent me a slightly smaller pulley which I received in a couple/three days.

When I put one in my ‘67 F250 about a year later I expected, and experienced, the same issue, but I was moving at roughly the same time, and had just run across a couple alternators from my ‘69 Mustang days, and lo and behold one of them had a pulley that was just about the same size as the second one Powermaster sent out.

I would assume they are shipping them (for the Ford FE pickups) with the slightly smaller pulley now, but that’s just a guess.

 

[supertruck]

Sort of related, but I'm suspicious of Powermaster due to previous experience. I race a Ford 2.5 ministock at my local short track. These engines are hard on starters. I've burned up 3 in the last 2 seasons, about 15 races so far. The last one was opened up and all the magnets were cracked. These are supposed to be better than stock, but they're not.

 

[TrailBeast]

Simple until you melt the bulkhead connector while under a heavy electrical load.

The bulkhead connector has long been eliminated from the charging system, as has the amp meter.

A VERY important question, is, "did they solve" the low RPM low output thing with the old girls? That is one huge advantage of the new Denzo/ etc, Dodge RAM, etc etc.

13 or so at 700 idle.
That’s fine with me.
The original alternator (45 amp) sucked at keeping up with AC and headlights along with an electric fuel pump and all the other normal stuff.
Turn on headlights and wipers the poor thing would turn inside out.

I don’t generally have occasion to run AC, headlights, wipers and all at the same time, but I could now.