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Re: Alternator Swap [Re: gtx69] #673939
04/19/10 05:00 PM
04/19/10 05:00 PM
Joined: May 2003
Posts: 15,487
Florida
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scratchnfotraction Offline
I Live Here
scratchnfotraction  Offline
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Joined: May 2003
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Florida
thats why the 120 amp denso mini alt is popular

it has a lot more juice output at idle

my lights dont dim,heater fan dont slow up at a red light now

thats why I used it on the 440 truck in the sig pic

Re: Alternator Swap [Re: gtx69] #673940
04/19/10 05:21 PM
04/19/10 05:21 PM
Joined: Aug 2007
Posts: 6,109
Valencia, España
NachoRT74 Offline
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NachoRT74  Offline
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Posts: 6,109
Valencia, España
Quote:

Everyone want more amps.How many amps are the 78 or 90 amps alternater at idle? That's wind we need more amps.




once again, read:
https://board.moparts.org/ubbthreads/show...rue#Post5894237

some of the answer is there


With a Charger born in Chrysler assembly plant in Valencia, Venezuela
Re: Alternator Swap [Re: scratchnfotraction] #673941
04/19/10 05:24 PM
04/19/10 05:24 PM
Joined: Aug 2007
Posts: 6,109
Valencia, España
NachoRT74 Offline
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NachoRT74  Offline
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Posts: 6,109
Valencia, España
Quote:

thats why the 120 amp denso mini alt is popular

it has a lot more juice output at idle

my lights dont dim,heater fan dont slow up at a red light now

thats why I used it on the 440 truck in the sig pic




its a nice upgrade

but my 60s amps doesn't dim headlights either at iddle ( and they are halogens ), and when they do is because I have EVERYTHING WORKING on car at the same time... thats not the normal situation

Almost all old ( and also not too old ) cars no matter the brand have at certain high consumption points some light dimming... maybe noticeable, maybe not. You can notice specially at cluster.

then some question... whats the iddle everybody set ? what the pulley size ? 50 RPMS can it be a BIG diff on these two parts of the play.


With a Charger born in Chrysler assembly plant in Valencia, Venezuela
Re: Alternator Swap [Re: NachoRT74] #673942
04/19/10 09:23 PM
04/19/10 09:23 PM
Joined: May 2003
Posts: 15,487
Florida
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scratchnfotraction Offline
I Live Here
scratchnfotraction  Offline
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Joined: May 2003
Posts: 15,487
Florida
yes,thats was part of my trouble

my curb idle is a low 800-850 in gear

IMHO,its a good upgrade if its not the older vehicals

my 85 truck was not bad at lights dimming,but with lights and the heater it showed up

now it dont and the 440 is at a 750-800 rpm idle in gear


Re: Alternator Swap [Re: scratchnfotraction] #673943
04/20/10 08:08 AM
04/20/10 08:08 AM
Joined: Sep 2006
Posts: 1,139
West Tennessee
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rbstroker Offline
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rbstroker  Offline
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Joined: Sep 2006
Posts: 1,139
West Tennessee
Quote:

thats why the 120 amp denso mini alt is popular

it has a lot more juice output at idle

my lights dont dim,heater fan dont slow up at a red light now

thats why I used it on the 440 truck in the sig pic





Is that the alternator that supposedly came on the 89-91 Ram vans? Other than upgrading the wiring and connectors, was it just bolt-on? I'm looking for something to keep the batteries up on my old bracket car rather than charging between rounds.


This is the land of the free because of the brave
Re: Alternator Swap [Re: rbstroker] #673944
04/20/10 08:16 AM
04/20/10 08:16 AM
Joined: May 2003
Posts: 15,487
Florida
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scratchnfotraction Offline
I Live Here
scratchnfotraction  Offline
I Live Here
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Joined: May 2003
Posts: 15,487
Florida
yes,got mine from a member,not sure what it was from,2 groove pully on it

but the others I have used are from the van and yr you mentioned

it was external regulated with a VR on the fire wall

it fit on my 440 in the sig pic with the non a/c brackets

I had to add a little to the swing arm to clear the alt case and have a little more reach

I also used the ps belt from the stock set up

it swings the alt out enuff to clear the head

I cut the plastic of the 85 alt wire and just trimed the eyeloop out of the plastic

i crimped on 2 eyeloops for the feild wires

wired it up and bolted it up

I did have to flip it and use the single ear for the pivot,that way the batt stud is out away from the head

has about a 1/4 from VC lip/head on the feild wires

just right


Last edited by scratchnfotraction; 04/20/10 08:19 AM.
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