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Re: Most amps alternator I can run with stock wiring 70RR
[Re: Ply72rr]
#690199
05/06/10 11:18 AM
05/06/10 11:18 AM
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Joined: Apr 2003
Posts: 3,968
North Riverside IL & Lowell IN
GTXKen
super gas
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super gas
Joined: Apr 2003
Posts: 3,968
North Riverside IL & Lowell IN
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Quote:
You can get a 78 amp alternator from I believe 76-77 Chryslers. I don't think you want to go any higher amps than that without modifying your wiring/amp gauge.
You shopuld modify the amp gauge in either case!
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Re: Most amps alternator I can run with stock wiring 70RR
[Re: GTXKen]
#690200
05/06/10 03:19 PM
05/06/10 03:19 PM
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Joined: Aug 2007
Posts: 6,095
Valencia, España
NachoRT74
master
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master
Joined: Aug 2007
Posts: 6,095
Valencia, España
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no need for ammeter mods, as far you make the right upgrades and power splices location yes, will need run better and thicker wires and clean conections. http://www.dodgecharger.com/forum/index.php/topic,33574.0.htmlhttp://www.moparmusclemagazine.com/techa...ator/index.htmlALTHOUGH the problem is not really the bigger output capacity, like the poor iddle charging capacity what produces the high peaks and heavy needle flicks, coming and going... just that OF COURSE a higher output capacity will increase the output at iddle by default.
With a Charger born in Chrysler assembly plant in Valencia, Venezuela
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Re: Most amps alternator I can run with stock wiring 70RR
[Re: NachoRT74]
#690201
05/06/10 03:35 PM
05/06/10 03:35 PM
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Joined: Oct 2005
Posts: 8,873
Ontario, Canada
Stanton
Don't question me!
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Don't question me!
Joined: Oct 2005
Posts: 8,873
Ontario, Canada
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Quote:
no need for ammeter mods
Very poor advice. The old Mopars are just an underdash electrical fire waiting to happen. For the price of the upgrade it's foolish NOT to do it.
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Re: Most amps alternator I can run with stock wiring 70RR
[Re: VitaminCRunner]
#690202
05/06/10 03:49 PM
05/06/10 03:49 PM
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Joined: Jun 2008
Posts: 1,822
Colorado
denfireguy
top fuel
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top fuel
Joined: Jun 2008
Posts: 1,822
Colorado
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Quote:
I put a stereo and amp in my Runner, now it seems like the alternator is not able to keep up at night. What is the largest alternator / regulator combo I can put in without any rewiring? Any brand combos appreciated.
thanks
When your wiring was brand new, the Packard style connectors on your bulkhead connector would handle about 45 Amps briefly. Police/taxi setups on Satellites and Furys do not use the bulkhead and ran the wire directly to the ammeter. Your FSM should have the 55 Amp and higher alternator connection diagrams. It takes heavier gauge wire and does not break the connection at the firewall. The lower amp wiring is still in the bulkhead connector but taped off.
BTW, I am skeptical that your stereo draws that much current.
Craig
2014 Ram 1500 Laramie, 73 Cuda
Previous mopars: 62 Valiant, 65 Fury III, 68 Fury III, 72 Satellite, 74 Satellite, 89 Acclaim, 98 Caravan, 2003 Durango
Only previous Non-Mopar: Schwinn Tornado
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Re: Most amps alternator I can run with stock wiring 70RR
[Re: NachoRT74]
#690203
05/06/10 03:53 PM
05/06/10 03:53 PM
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Joined: Jun 2008
Posts: 1,822
Colorado
denfireguy
top fuel
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top fuel
Joined: Jun 2008
Posts: 1,822
Colorado
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Quote:
no need for ammeter mods, as far you make the right upgrades and power splices location
yes, will need run better and thicker wires and clean conections.
http://www.dodgecharger.com/forum/index.php/topic,33574.0.html
http://www.moparmusclemagazine.com/techa...ator/index.html
ALTHOUGH the problem is not really the bigger output capacity, like the poor iddle charging capacity what produces the high peaks and heavy needle flicks, coming and going... just that OF COURSE a higher output capacity will increase the output at iddle by default.
 All of this ammeter mod stuff is propaganda and scare mongering to sell stuff. A properly maintained electrical system does not need to be replaced.
Craig
2014 Ram 1500 Laramie, 73 Cuda
Previous mopars: 62 Valiant, 65 Fury III, 68 Fury III, 72 Satellite, 74 Satellite, 89 Acclaim, 98 Caravan, 2003 Durango
Only previous Non-Mopar: Schwinn Tornado
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Re: Most amps alternator I can run with stock wiring 70RR
[Re: denfireguy]
#690204
05/06/10 04:29 PM
05/06/10 04:29 PM
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Joined: Feb 2003
Posts: 10,213
Someplace you aren't
SomeCarGuy
I Live Here
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I Live Here
Joined: Feb 2003
Posts: 10,213
Someplace you aren't
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Simply bypassing the amp meter by moving one wire to the other post is so easy, I can't understand why some people are against it. Costs nothing but a sore back twisting under the dash.
You can go hardcore and bypass the bulkhead, but just doing the above is fairly effective.
I want my fair share
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Re: Most amps alternator I can run with stock wiring 70RR
[Re: SomeCarGuy]
#690205
05/06/10 05:24 PM
05/06/10 05:24 PM
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Joined: Aug 2007
Posts: 6,095
Valencia, España
NachoRT74
master
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master
Joined: Aug 2007
Posts: 6,095
Valencia, España
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Quote:
Simply bypassing the amp meter by moving one wire to the other post is so easy, I can't understand why some people are against it. Costs nothing but a sore back twisting under the dash.
You can go hardcore and bypass the bulkhead, but just doing the above is fairly effective.
False!
the first point to burn is the bulkhead. Then the ammeter
ammeter comes bad and burn wires JUST if you get loosen the ammeter terminals, but being these propperly tight, the fist spot will be ALLWAYS the bulkhead terminals and BEGINING by the black wire coming from alt.
the other mistake made what begins the burn everywehere INCLUDING AMMETER ( and that will be true on this case ) is making a batt upgrade with a higher reserve unit but still the low amperage alternator, that will take FOREVER to get back charged the batt, making high peaks going to teh system when increasing RPMs... more to read about here:
http://www.dodgecharger.com/forum/index.php/topic,62772.0.html
( one of the links there is the one already exposed )
You can make the conversion to shunt system using lates ammeter internals on your old case and face to make to work EVEN SAFER... is also exposed on one of the links there.
I trust more on an ammeter than on a voltimeter when reading charge status. Amperes is what holds the electrical load, not volts even is true they are certainly somehow and relativelly proportional. Although a voltimeter works too, it can be a cheater. Both together, even better.
once I got 18 volts reading but discharge ( shorted alt ) you would think, ok something is wrong but still being charged... and is false.
Last edited by NachoRT74; 05/06/10 05:34 PM.
With a Charger born in Chrysler assembly plant in Valencia, Venezuela
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Re: Most amps alternator I can run with stock wiring 70RR
[Re: VitaminCRunner]
#690206
05/06/10 05:41 PM
05/06/10 05:41 PM
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Joined: Apr 2003
Posts: 12,234
Looking for a way out of Middl...
IMGTX
I Live Here
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I Live Here
Joined: Apr 2003
Posts: 12,234
Looking for a way out of Middl...
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The ammeters will handle 100 amps with no problem. The wiring and connectors to the ammeter are the problem. Upgrade the wiring to a larger guage, bypass the bulkhead connector and add a fusible link at the alternator (to protect against a runaway alternator) and you will be fine. Then just upgrade to a better alternator. 
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Re: Most amps alternator I can run with stock wiring 70RR
[Re: NachoRT74]
#690207
05/06/10 06:34 PM
05/06/10 06:34 PM
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Joined: Mar 2004
Posts: 8,948
Harlan, Iowa
69CoronetRT
master
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master
Joined: Mar 2004
Posts: 8,948
Harlan, Iowa
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Quote:
just that OF COURSE a higher output capacity will increase the output at iddle by default.
Really? What is the output of each alternator at the same idle RPM?
Last edited by 69CoronetRT; 05/06/10 06:35 PM.
Seeking:
1969 St. Louis plant VINs, SPD, and VONs.
Over 2,000 thanks to you!
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Re: Most amps alternator I can run with stock wiring 70RR
[Re: IMGTX]
#690209
05/07/10 11:10 AM
05/07/10 11:10 AM
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Joined: Aug 2007
Posts: 6,095
Valencia, España
NachoRT74
master
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master
Joined: Aug 2007
Posts: 6,095
Valencia, España
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Quote:
The ammeters will handle 100 amps with no problem.
well, really, it won't. they are on 40-50 rate. But as I explained on several threads, Doesn't have to, since if you have an alt able to feed the car, this load will be BEFORE the ammeter, unless a discharged batt or wrongly hooked relays on batt side.
Then on an alternator failure ALL the load will run by ammeter coming from batt. On that instance, you have to run on your car just the basics to save the ammeter and keep working the car just with batt power until fix the alt. Thats the correct procedure.
With a Charger born in Chrysler assembly plant in Valencia, Venezuela
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Re: Most amps alternator I can run with stock wiring 70RR
[Re: NachoRT74]
#690210
05/09/10 01:15 AM
05/09/10 01:15 AM
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Joined: Jan 2003
Posts: 5,791
Hamilton, Ontario Canada
Magnum
master
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master
Joined: Jan 2003
Posts: 5,791
Hamilton, Ontario Canada
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The set up even when the car was new was marginal.
The engineer who decided to run all that power through the bulkhead then through an ammeter should have been fired.
Run the charge wire right to the battery.
69 Super Bee, 93 Mustang LX, 04 Allure Super
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Re: Most amps alternator I can run with stock wiring 70RR
[Re: Magnum]
#690211
05/09/10 07:57 AM
05/09/10 07:57 AM
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Joined: Feb 2005
Posts: 3,958
SW Fla.
CYACOP
master
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master
Joined: Feb 2005
Posts: 3,958
SW Fla.
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Quote:
The set up even when the car was new was marginal.
The engineer who decided to run all that power through the bulkhead then through an ammeter should have been fired.
Run the charge wire right to the battery.
Then run the amp power wire directly to the battery and you dont have an issue.
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Re: Most amps alternator I can run with stock wiring 70RR
[Re: 69CoronetRT]
#690212
05/09/10 08:22 AM
05/09/10 08:22 AM
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Joined: Jul 2003
Posts: 3,377
Rancho Cordova, CA
Exit1965
master
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master
Joined: Jul 2003
Posts: 3,377
Rancho Cordova, CA
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Quote:
Quote:
just that OF COURSE a higher output capacity will increase the output at iddle by default.
Really? What is the output of each alternator at the same idle RPM?
FWIW, here's what came with my 78 amp alternator I got at NAPA to put into my 67 Dart.
Note the output is for ALTERNATOR RPM. I don't remember the ratio, but you divide the crank pulley size by the alt pulley size and there's your multiplier. If it's 2.5 then by 2500 engine RPM, the alternator is over 6000 RPM. Idling at 800 RPM would give an alt speed of 2000, etc.
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Re: Most amps alternator I can run with stock wiring 70RR
[Re: NachoRT74]
#690214
05/09/10 01:08 PM
05/09/10 01:08 PM
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Joined: Feb 2003
Posts: 10,213
Someplace you aren't
SomeCarGuy
I Live Here
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I Live Here
Joined: Feb 2003
Posts: 10,213
Someplace you aren't
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Quote:
Quote:
Simply bypassing the amp meter by moving one wire to the other post is so easy, I can't understand why some people are against it. Costs nothing but a sore back twisting under the dash.
You can go hardcore and bypass the bulkhead, but just doing the above is fairly effective.
False!
the first point to burn is the bulkhead. Then the ammeter
ammeter comes bad and burn wires JUST if you get loosen the ammeter terminals, but being these propperly tight, the fist spot will be ALLWAYS the bulkhead terminals and BEGINING by the black wire coming from alt.
the other mistake made what begins the burn everywehere INCLUDING AMMETER ( and that will be true on this case ) is making a batt upgrade with a higher reserve unit but still the low amperage alternator, that will take FOREVER to get back charged the batt, making high peaks going to teh system when increasing RPMs... more to read about here:
http://www.dodgecharger.com/forum/index.php/topic,62772.0.html
( one of the links there is the one already exposed )
You can make the conversion to shunt system using lates ammeter internals on your old case and face to make to work EVEN SAFER... is also exposed on one of the links there.
I trust more on an ammeter than on a voltimeter when reading charge status. Amperes is what holds the electrical load, not volts even is true they are certainly somehow and relativelly proportional. Although a voltimeter works too, it can be a cheater. Both together, even better.
once I got 18 volts reading but discharge ( shorted alt ) you would think, ok something is wrong but still being charged... and is false.
Super false!!
I have done away with the gauge and had no problems running bigger alts on these cars. Add a shunt and you are good. Nothing wrong with doing the extra work on the bulkhead though. Just have not found the need to do this on mine. Plenty of other things to work on.
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Re: Most amps alternator I can run with stock wiring 70RR
[Re: SomeCarGuy]
#690215
05/09/10 01:22 PM
05/09/10 01:22 PM
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Joined: Sep 2007
Posts: 14,889
up yours
Supercuda
About to go away
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About to go away
Joined: Sep 2007
Posts: 14,889
up yours
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Seems a lot of confusion about how the charging system works.
The ONLY current that goes thru the ammeter (in a stock application) is the current to/from the battery and that is the only load that should be hooked to the ammeter.
ALL OTHER ELECTRICAL LOADS are taken out of the system BEFORE the ammeter.
If you have a 1000a alternator and a 20000W stereo system the ammeter will NEVER see the stereo's draw, if you wire it up properly.
If you wire it up wrong then all bets are off.
The reason the bulkhead fitting smokes first is because the full charging systemm requirements go through it. It is under the dash that all the loads are picked off of that circuit.
If you don't understand how the stock charging system works it's easy to get confused/mistaken about hings and suckered in by slick taking hype off of some website designed to sell you a cure.
All the ammeter needs is clean and tight contacts. I clean up the posts, nuts, put a touch of copper antisieze on there and double nut the connection tight. No problems there anymore. For the bulkhead connection, you can either run a one piece wire thru the hole in the connector (eliminating the male/female terminals in the connector) or a parallel wire through an appropriate opening in the firewall.
The only time an ammeter should ever see the full output of the alternator is if you had a dead short to ground on the battery cable, for example, or you alternator is full fielded, in which case your problem isn't the ammeter.
They say there are no such thing as a stupid question.
They say there is always the exception that proves the rule.
Don't be the exception.
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Re: Most amps alternator I can run with stock wiring 70RR
[Re: Supercuda]
#690216
05/09/10 02:15 PM
05/09/10 02:15 PM
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Joined: Jan 2003
Posts: 7,906
Lower AZ
AZ-Nick
Here Since 1996!
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Here Since 1996!
Joined: Jan 2003
Posts: 7,906
Lower AZ
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great info in this post, thanks...
71 GTX 4sp Dana GY9
HD Road King
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