Alternator Capacity

[Zep5.0]

Preface: I don't know much about car electronics, as far as draw, etc.

Will a 200 amp alternator be enough to power the car, 2 Amps, electronic fans for both radiator and Trans cooler? And should I get one with internal regulator?

 

[MadMikeyL]

That should be more than enough, as long as the stereo isn’t ridiculous. And yes, internally regulated is the way to go.

 

[Derphound01]

Crown Vic PPVs use a 200A alternator, so you should be more than fine. RockAuto sells the Motorcraft ones.

Make sure your wiring can handle it though.

 

[Zep5.0]

Crown Vic PPVs use a 200A alternator, so you should be more than fine. RockAuto sells the Motorcraft ones.

Make sure your wiring can handle it though.

Wiring is all new, battery relocated to the trunk. Thanks!

That should be more than enough, as long as the stereo isn’t ridiculous. And yes, internally regulated is the way to go.

Thanks! 850 watts between the 2 Amps. Nothing crazy at all.

 

[Grog6]

The cv alts need the cv eec to run them. The eec sets the output with a pwm signal.
I'd love to find an internal regulator for one.
Our alts are 130A.

 

[bowez]

By my memory from eons ago, a standard belt can't pull more than 200A without some fancy tricks anyway. Comes down to belt wrap, surface tension and belt area.

 

[Grog6]

I've got an electric motor bolted up to it, so idk. It will drive at least 160A@12.6v.
That's all the load I can come up with. The thing that stopped me years ago was destroying batteries.
The curve of charging voltage vs temperature is not linear, apparently. Varying voltage vs pwm does seem to be.
3600 rpm seems to be enough r's.
The coolest thing is the one-way clutch in the pulley; that would have kept me from breaking the og intake manifold with 5500 rpm shifts,lol.