6.0 Powerstroke Multiple Large Case Alternators

[scooter99]

Hey everyone, I have a question. Is there anyone out there that has the 6.0L Powerstroke Motor and has multiple alternators. We're trying to figure out how to get a couple of large case alternators in this beast.

Does anyone know if Gary Killian has the 6.0 or the 7.3 in his Excursion? Love to know what alts he's running and how.

THanks for any help.

[Rich Schenk]

2 400 amp dc alts

[rocking.that.eclipse]

If you message Gary on Facebook he will answer you Scott. It may take him a while but he is one of the most down to earth guys you'll ever meet.

At slamology he sat there and BS'ed with me for probably an hour and a half about how his build went...

[Bump4life]

this is what i found. may need an ambulance package?

The single generator system consists of the generator mounted on the top right of the engine (diesel) or top center of the engine (gas). The gas
engines use a 3G 115-amp generator with a 2.71:1 pulley ratio. The 6.0L diesel engine uses a 6G 110-amp generator with a 2.79:1 pulley ratio.

The dual generator package consists of an upper/lower dual generator system. The 6.0L upper generator is a VR42 140-amp generator with a 2.79:1
pulley ratio. The 6.0L lower generator is a 4G 120-amp generator with a 3.00:1 pulley ratio. The upper and lower generators are not interchangeable.

In the single generator system, with the key in the ON position, voltage is supplied through the instrument cluster warning indicator I circuit to the
voltage regulator. The regulator grounds this circuit and the charging system warning indicator is illuminated. When the engine is started, the
regulator removes the ground on this circuit and the warning indicator turns off.

On the dual generator system, the PCM controls the charging system warning indicator and commands the lamp on if the PCM detects a concern on
the monitored circuits.

The dual generator system is also monitored and controlled by the PCM. The PCM monitors both the upper and lower generator I circuits to
determine the output of both generators and sets possible diagnostic trouble codes (DTCs). The PCM controls the lower generator by turning it off
when the glow plug system is commanded on by the PCM to avoid possible damage (excessive voltage) to the glow plugs. As soon as the glow plug
system stops cycling, the PCM powers up the lower generator.

The dual generators operate independently of each other. The control is through the internal voltage regulators. If one generator fails, the other
generator can maintain system performance under light load conditions. Under a heavy load, the PCM detects a concern, sets a DTC, and illuminates
the warning indicator.

[scooter99]

Wow I forgot I posted this. I've since figured out a few things.

2 400 amp dc alts

I'm using Singer Alts. No DC for this dude.

If you message Gary on Facebook he will answer you Scott. It may take him a while but he is one of the most down to earth guys you'll ever meet.

At slamology he sat there and BS'ed with me for probably an hour and a half about how his build went...

I actually spoke to Gary a few times since this. He has a 7.3 not a 6.0. But he is a great dude. Nice to chat with. Doesn't know me from the guy that pulls up next to him on the freeway, and talked to me like we'd known each other for years. Very cool to talk to.

this is what i found. may need an ambulance package?

The single generator system consists of the generator mounted on the top right of the engine (diesel) or top center of the engine (gas). The gas
engines use a 3G 115-amp generator with a 2.71:1 pulley ratio. The 6.0L diesel engine uses a 6G 110-amp generator with a 2.79:1 pulley ratio.

The dual generator package consists of an upper/lower dual generator system. The 6.0L upper generator is a VR42 140-amp generator with a 2.79:1
pulley ratio. The 6.0L lower generator is a 4G 120-amp generator with a 3.00:1 pulley ratio. The upper and lower generators are not interchangeable.

In the single generator system, with the key in the ON position, voltage is supplied through the instrument cluster warning indicator I circuit to the
voltage regulator. The regulator grounds this circuit and the charging system warning indicator is illuminated. When the engine is started, the
regulator removes the ground on this circuit and the warning indicator turns off.

On the dual generator system, the PCM controls the charging system warning indicator and commands the lamp on if the PCM detects a concern on
the monitored circuits.

The dual generator system is also monitored and controlled by the PCM. The PCM monitors both the upper and lower generator I circuits to
determine the output of both generators and sets possible diagnostic trouble codes (DTCs). The PCM controls the lower generator by turning it off
when the glow plug system is commanded on by the PCM to avoid possible damage (excessive voltage) to the glow plugs. As soon as the glow plug
system stops cycling, the PCM powers up the lower generator.

The dual generators operate independently of each other. The control is through the internal voltage regulators. If one generator fails, the other
generator can maintain system performance under light load conditions. Under a heavy load, the PCM detects a concern, sets a DTC, and illuminates
the warning indicator.

Thank you. Yes, we (Mike Singer and I) have talked about this a few times. The second alt would be separate from the CPU. It would just daisy chain, for lack of a better term, onto the primary alt. They could both work at the same time according to Mike. My issues have always been the bracketry, pulley, tensioner, and balancer pulley. There's a lot of shit that goes in there for the second alt. There's already no room in there, so it would be a nightmare to get all of that in there. However, we've figured out we can actually do a separate bracket, with the same sized alt as the primary (replaced with a Singer 370a now) in next to it, using the same mounting feet. It just needs an additional bracket to hold the other side, and probably a second tensioner, or pulley for belt wrapping.

Just not sure I need it at this point. I don't know yet where I'm going with it just yet.

Thanks guys.