Background:
I have been in contact with a representative for Odyssey batteries (National Program Manager) - a very helpful person! Trying to get his recommendation for the maximum alternator output voltage for charging the Odyssey batteries. He mentioned that the max alternator output voltage should be 14.4V. I started this search because some alternator manufacturers void their warranty when AGM batteries are used. I also wanted to determine if the high-output alternators (many of which put out 14.8 volts) might not be good for the AGM batteries (low internal resistance of these batteries can result in high rates of charge IIRC).

Anyway, in an email, he mentioned that Ford provides a 235A "Police Interceptor" alternator that is a 14.4V unit and is a direct replacement to Ford OEM lower power units.

Has anyone heard of this alternator (or have a part number)?? I will give the AutoNation WBL rep a call and try to track this down if no one has heard of it!

 

no help on the subject, but
Leece-Neville makes a 230A unit as a direct replacement. Internal fans in front and back with a real regulator. Puts out 14.4 and even has a Ford Part number.

 

Mark iirc that MAYBE the one found on the 4.6 intercepter crown vic.
Best I got

 

Thanks Moe!

 

posted this one before but para.7 mentions overcharging of AGM:

Absorbent Glass Mat (AGM) Battery Information - Battery University

todays alternators are getting complicated - Bosch can't even test my Mini alternator because it needs a signal from the PCM to deliver current - and not many dealers have the equipment either.

 

Thanks for re-posting the link Euroman. I hadn't seen it before, but it is fairly consistent with other links I have seen (14.4 volts, or 2.4 volts per cell, for typical max alternator output with float of around 13.6 volts). Many of the high output alternators can deliver over the 14.4 volts, say around 14.8 volts, and I was wondering what the effect on the batteries would be. My DieHard Platinum AGMs are holding up well (3 years), even though I have a higher output alternator (higher max volts and higher float volts).

Anyway, the thread was more directed at getting a part number for Fords 235A unit, but I always appreciate information.

 

AGM batteries should be charged slightly higher for full charge - 14.7V is sometimes quoted - but they are sensitive to high float voltage, much more so than standard batteries.

still can't help with the part number though...

 

Don't know of an OEM 235 amp 6.0 replacement alternator. I did see a 235 amp alternator for a gas motor, which would be the police interceptor version. I got a 250 amp alternator from Ed's FICM repair. Nominal voltage is set at 14.2 and It holds it even during the 30 seconds glow plugs are on after initial engine start. I have 4 year old Autozone AGM batteries and they show no signs degrading.

Ed

 

Good luck using this on a 6.0...

 

Is that the pic for the Crown Vic Interceptor alternator that Moe and Ed mentioned above?

 

Indeed, that would be the MOD motor alternator.

Josh

 

Thanks for the post. As you said - Clearly that isn't workable in our trucks. I have to believe that he mentioned the 235A alternator merely "in passing", even though his wording made it sound like a replacement part.

 

If one was ambitious the faceplate housings could be swapped.

It's workable, but not a parts counter swappable upgrade.

Josh

 

I have link to an eBay listing for a PowerMaxUSA 250a alternator:
http://www.ebay.com/itm/250AMP-HIGH-OUTPUT-ALTERNATOR-FORD-E-F-SERIES-E450-F450-EXCURSION-6-0L-2003-2007-/281226124330?pt=Motors_Car_Truck_Parts_Accessories&hash=item417a621c2a&vxp=mtrOutput voltage on this unit is listed as 12v-14.7v so probably not why you're looking for.

However, the ad lists the following ford interchange numbers:
FORD: 3C3T-10300-AA, 3C3T-10300-AC, 3C3Z-10346-AA,
3C3T-10300-EA, 3C3Z-10346-EA, 4C3T-10300-AA, 4C3Z-10346-AA
I'm not sure where to check but maybe one of those may be suitable.

 

I would give Ed a shout at FICM repair. Super service and great parts