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Re: Mopar High Amp alternator? [Re: Pool Fixer] #377842
07/19/09 02:52 PM
07/19/09 02:52 PM
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West Tennessee
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rbstroker Offline
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Is there any way to identify what the rated output for a stock Mopar alternator. I want to upgrade my early (1965) alternator to a 1978 alternator that I pulled from a pickup. I realize that I will have to ground one of the field terminals. Don't want to go through the aggravation of the swap if the outputs are the same.


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Re: Mopar High Amp alternator? [Re: rbstroker] #377843
07/19/09 08:17 PM
07/19/09 08:17 PM
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74fldart Offline
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this might help and
check out this site www.qualitypowerauto.com.

Last edited by 74fldart; 07/19/09 08:31 PM.
Re: Mopar High Amp alternator? [Re: rbstroker] #377844
07/19/09 08:56 PM
07/19/09 08:56 PM
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Coram, NY
Pool Fixer Offline
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Quote:

Is there any way to identify what the rated output for a stock Mopar alternator. I want to upgrade my early (1965) alternator to a 1978 alternator that I pulled from a pickup. I realize that I will have to ground one of the field terminals. Don't want to go through the aggravation of the swap if the outputs are the same.




I was considering this but I was told that that these later alts like you are talking about might be rated for more amps, but suffer the same big problem that the older ones do: low charge at idle. I don't know if that's 100% true, but my old one wouldn't keep up with electric fuel pump and the denso handles all of the electrics with ease.

Re: Mopar High Amp alternator? [Re: Dallasdart] #377845
07/19/09 09:50 PM
07/19/09 09:50 PM
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Quote:

Andy, What If I have rewired the entire car with the harnesses from year one. New Dash/engine forward/rear lights. Can I still upgrade the alt. without changing the stock harness?




I have all new year one wires also that I'm getting ready to install, but am considering a higher amp alt. Should the ammeter be converted or bypassed also?

Tav

Re: Mopar High Amp alternator? [Re: Dodgem] #377846
07/20/09 12:02 AM
07/20/09 12:02 AM
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fullmetaljacket Offline OP
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So this is a question within a question.
I now have a 140 amp GM alternator for the last year or so with no problems; BUT, I hate the look.
I am considering one of the Chrysler old style units with high amp capability both at idle and WOT. This is why. I have an MSD 6AL ignition box under the dash in conjunction with a Blaster 2 coil, I have a Chrysler mini van single high CFM electric fan out front, I will be running a 1000 Aeromotive electric fuel pump very soon, but now have a Barry Grant Hot Rod continuous duty fuel pump, I have just the basic on the dash as far as lights and that is pretty much the package.

What Minimum idle/maximum WOT amperage alternator should I run with this set up? I understand that Quality power products converts the old school original looking alternators into Con Edison plants.
If I don't need a 200 amp unit to drain at my motor, then what's the amperage I can get away with?

Re: Mopar High Amp alternator? [Re: fullmetaljacket] #377847
07/20/09 09:46 AM
07/20/09 09:46 AM
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florida
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74fldart Offline
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you should always bypass the ammeter gauge esecially when you go to a higher output alternator.
the old gauges give the problems not just the wiring.
to figure what amp alter. you need, try to get the power usage of the msd, the fuel pump, fans, etc. and add that to your basic stock rating of 60 amps . i would think that 120 to 140 would be enough. run a large gauge wire #6 or #4 to your battery from the alternator also .

Re: Mopar High Amp alternator? [Re: 74fldart] #377848
07/20/09 10:09 AM
07/20/09 10:09 AM
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fullmetaljacket Offline OP
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Yes, I bypassed the amp meter gauge and I have a large wire from the battery to the alternator. I just thought that maybe I don't even need a 140 and that I may get away with a 100 amp unit or smaller. I'll do the math and settle on the numbers.

Re: Mopar High Amp alternator? [Re: Pool Fixer] #2564629
10/15/18 10:45 PM
10/15/18 10:45 PM
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Originally Posted By dkn1997
I use a 130amp denso alt of an 02 one ton ram van. bolts right in, it's externally regulated so you can use your stock reg. cheap on ebay if you can settle for a bit less amps. I see them a lot for 30-100 bucks. as said before, upgrade wiring. not a huge deal. I ran a 4g wire from the alt to the starter relay. I have since added extra fuseblock and relays for lights, fans, electric fuel pump. I got all my power for the relays from the starter relay where I ran that 4g wire.


i realize this is an old post, but are you still active on the boards?
if so, do you have any photos or helpful tips.

Re: Mopar High Amp alternator? [Re: 74fldart] #2564982
10/16/18 06:05 PM
10/16/18 06:05 PM
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Valencia, España
NachoRT74 Offline
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Originally Posted By 74fldart
you should always bypass the ammeter gauge esecially when you go to a higher output alternator.
the old gauges give the problems not just the wiring.


Not really. In fact with a higher output alt, the ammeter will be even SAFER than with the stock alt

Old dicussion back... allways floats back again and again and again


With a Charger born in Chrysler assembly plant in Valencia, Venezuela
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