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Alternator ?

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Old Feb 1, 2013 | 01:10 PM
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Alternator ?
What is the amperage on the oem alternator? I am upgrading because i run a lot of juice and was wondering about some tips for amperage and suggested amperage for he truck.
 
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Old Feb 1, 2013 | 03:59 PM
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110 is stock with a single alt system.
 
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Old Feb 1, 2013 | 04:54 PM
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Would be best to get one that can Push out 120+ AMPS at Idel

My DC Power will push 140 amps at Idel

At cold start this will be when you need the Added Amps
 
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Old Feb 1, 2013 | 08:28 PM
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Originally Posted by BLADE35
Would be best to get one that can Push out 120+ AMPS at Idel

My DC Power will push 140 amps at Idel

At cold start this will be when you need the Added Amps
Are you seeing 14+ volts during the GP cycle with the 190 amp DC alternator?

Josh
 
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Old Feb 1, 2013 | 08:37 PM
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Nope it runs on battery until the glow plugs turn off. I get 12.5v or so
 
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Old Feb 1, 2013 | 08:52 PM
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Originally Posted by firedaniel
Nope it runs on battery until the glow plugs turn off. I get 12.5v or so
Alternator is always commanded to charge, it just cannot keep up with the demand of 130+ amps at idle cold.

Josh
 
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Old Feb 1, 2013 | 09:11 PM
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If that's the case these fancy 270 amp alternators should have full voltage available at startup. They don't until the GP turn off...
 
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Old Feb 1, 2013 | 09:23 PM
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Originally Posted by firedaniel
If that's the case these fancy 270 amp alternators should have full voltage available at startup. They don't until the GP turn off...
Curt's05 and ZRT600Guy have 270 amp alternators and 14+ volts at idle during GP cycle.

There are others with 270+ amp alternators and report the same.

Where are you getting your facts?

I would think the 190 is borderline to achieve 14 volts at idle during glow plug cycle.




Josh
 
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Old Feb 1, 2013 | 09:38 PM
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Originally Posted by firedaniel
If that's the case these fancy 270 amp alternators should have full voltage available at startup. They don't until the GP turn off...
And to help hammer the ppoint home here is DC Power's Youtube video showing their 270 amp alternator at start...


Josh
 
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Old Feb 1, 2013 | 09:52 PM
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I have a 190 from DCPower and it doesn't until GP shut off. Guess the bigger ones do. Who knows. All i know is Mine definitely works better than stock did!
 
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Old Feb 1, 2013 | 09:52 PM
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Originally Posted by Bullitt390
Are you seeing 14+ volts during the GP cycle with the 190 amp DC alternator?

Josh
I dont think it makes it quite to 14 volts

But more the 13.0-13.9volts range at this specific time

And to be Honest I would have to really watch it next startup to make shure
 
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Old Feb 1, 2013 | 09:55 PM
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Originally Posted by firedaniel
Nope it runs on battery until the glow plugs turn off. I get 12.5v or so
The part in red is an old urban myth that is not right..
Someone had posted a video that shows that is just not true.
I did a little test here at home with some charging system
test tools and also show that the alternator is charging at
startup. It just very slow in catching up with the demand
of the glow plugs.

Sean
 
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Old Feb 1, 2013 | 09:57 PM
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Originally Posted by firedaniel
I have a 190 from DCPower and it doesn't until GP shut off. Guess the bigger ones do. Who knows. All i know is Mine definitely works better than stock did!
That's what I was thinking that the 190 amp is still marginal (in relative terms) for achieving higher volts during glow plug cycle.

I'm think a 250 amp alternator, with 270 being the normally available unit being the minimum to get 14 volts with glow plugs operating.

My own alternator is rated at 160 amps peak (not sure exactly what it would be rated cold idle), and as you see in the video only gets 12.4-12.5 volts at idle with glow plugs.

The stock 110 amp 6G is even worse.

Josh
 
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Old Feb 1, 2013 | 09:58 PM
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Originally Posted by firedaniel
I have a 190 from DCPower and it doesn't until GP shut off. Guess the bigger ones do. Who knows. All i know is Mine definitely works better than stock did!


It turns On Imediatly Josh tested his truck awhile Back I havent tested mine But IDK Why it would be any diffrent



It just dont look like its On since there is Such High Power demands at this specific time
 
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Old Feb 1, 2013 | 10:00 PM
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Originally Posted by BLADE35
I dont think it makes it quite to 14 volts

But more the 13.0-13.9volts range at this specific time

And to be Honest I would have to really watch it next startup to make shure

Mine is 12-12.5v on my scan gauge II on cold starts.

Love urban myths too. Lol. And I always check snopes! Lol.
 
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