Re: Alternator Advice
[Re: TooMany62s]
#2034411
03/19/16 12:41 PM
03/19/16 12:41 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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Why not get your existing alternator rebuilt by a local shop?
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: Alternator Advice
[Re: dvw]
#2034412
03/19/16 12:42 PM
03/19/16 12:42 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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I would suggest avoiding a 1 wire alt & instead get a 78 amp alt for an 85 M body. it has the thin stator (ribbed section inbetween the two cases) so a slight spacer adjustment will be needed & possibly a slight swing arm adjustment but no big deal. for a true bolt in just get the highest amp alt they have with the regular width stator & what DVR said ground one of the male field terminals to one of the (3) case halves mini bolts with a ring terminal and brass 1/4 female terminal (NAPA 725145) 99 cents + tax & a short pigtail piece of wire then run your regular long green field wire from reg up to other alt field terminal
live every 24 hour block of time like it's your last day on earth
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Re: Alternator Advice
[Re: TooMany62s]
#2034427
03/19/16 01:05 PM
03/19/16 01:05 PM
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Joined: Dec 2007
Posts: 18,165 Mass
DAYCLONA
I Live Here
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I Live Here
Joined: Dec 2007
Posts: 18,165
Mass
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The alternator in my old '62 died. I'd be happy if I could find the round back 45amp replacement just like the one it came with but I can't find one. The parts store replacements are all converted square back parts. I'm thinking about going to a one wire conversion. I like the small Denso idea but they don't come with a dual belt pulley. My car has ac so I need a double pulley. I don't have any high amp accessories so the $200 100amp PowerMaster parts are an overkill. I'd like to hear what the guys here have to say. IMHO, avoid the local/chain re-builders, been down that route, always ends in failure/inferior work, either a Powemaster replacement (they do have a Mopar restoration line of NEW alternators) or contact Jim Ridge at Dixie Restoration (Mopart Member) about having your original restored mike
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Re: Alternator Advice
[Re: TooMany62s]
#2034573
03/19/16 05:48 PM
03/19/16 05:48 PM
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Joined: Dec 2007
Posts: 18,165 Mass
DAYCLONA
I Live Here
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I Live Here
Joined: Dec 2007
Posts: 18,165
Mass
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Since the electrical systems on these old Mopars was marginal I'm hesitant to install a high amp late model part. I think the original '62 alternator was 45 amps. So far no luck finding a local rebuilder. What's marginal is the dash amp meter, if you want an aftermarket alt, install one, but bypass the dash amp gauge, and convert it to a volt meter instead, lots of volt meter conversion kits offered to retain the stock look on the dash, often times using your original gauge/face
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Re: Alternator Advice
[Re: TooMany62s]
#2034633
03/19/16 07:29 PM
03/19/16 07:29 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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My car has ac so I need a double pulley. I don't have any high amp accessories in that case I'd keep it simple and get a 70's square back dual pulley alt & put it in & you're (pretty much) golden). I would suggest cleaning ALL terminals/connections expecially the bulkhead & doing Nachos' bulkhead parallel bypass is a good move which is simply to run the (2) main in/out circuits, the feed in from the battery past the fusible link into/thru/past the bulkhead and the feed out from the bulkhead (same deal) to the alt: solder in 2 pieces of wire for a direct connection as opposed to the 2 pairs of male/female brass terminals that connect those 2 circuits now. you are replacing those (2) high current connections from brass pull apart terminals which are subject to corrosion to a direct wire on both of em. EDIT #1 clean all terminals #2 strive to keep the ammeter needle as close to 12 o'clock as possible which tells you the system is in equilibrium (neither charging or discharging) and that the alt is supplying only the current the accessories are on are demanding nor is the battery being charged or discharged. #1 culprit is using the alt to charge a dead or partly depleted battery. Use a battery charger on slo charge
Last edited by RapidRobert; 03/19/16 07:42 PM.
live every 24 hour block of time like it's your last day on earth
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Re: Alternator Advice
[Re: Andrewh]
#2034737
03/19/16 10:31 PM
03/19/16 10:31 PM
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Joined: Jan 2003
Posts: 27,421 Balt. Md
383man
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 27,421
Balt. Md
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That is a common misconception. you are not supplying 78 amps. you only pull what the system requires. it has the potential to supply 78 amps, but if your system only pulls 30, that is all you get. This is right Ron
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Re: Alternator Advice
[Re: Andrewh]
#2034787
03/20/16 12:15 AM
03/20/16 12:15 AM
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Joined: Jan 2003
Posts: 1,798 Greer, SC
TooMany62s
OP
top fuel
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OP
top fuel
Joined: Jan 2003
Posts: 1,798
Greer, SC
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That is a common misconception. you are not supplying 78 amps. you only pull what the system requires. it has the potential to supply 78 amps, but if your system only pulls 30, that is all you get. Understood. But I assume if the battery was low enough the output of the alternator could easily exceed the 45 amps the wiring on a '62 was designed to handle? That concerns me. Maybe it shouldn't?
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Re: Alternator Advice
[Re: TooMany62s]
#2034924
03/20/16 10:40 AM
03/20/16 10:40 AM
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Joined: Feb 2003
Posts: 8,761
Andrewh
master
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master
Joined: Feb 2003
Posts: 8,761
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That is a common misconception. you are not supplying 78 amps. you only pull what the system requires. it has the potential to supply 78 amps, but if your system only pulls 30, that is all you get. Understood. But I assume if the battery was low enough the output of the alternator could easily exceed the 45 amps the wiring on a '62 was designed to handle? That concerns me. Maybe it shouldn't? If you want to fix it, you can do as sugguested above. or do the mad wiring bypass to eliminate the weak points in the charging system. I went a step further for my 65 and was able to handle actually charging over a 100 amps without anything burning up in the car, for 20 min or so for a test. but it depends on how stock you need your car to look.
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Re: Alternator Advice
[Re: JAMESDART]
#2034982
03/20/16 12:17 PM
03/20/16 12:17 PM
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Joined: Feb 2003
Posts: 16,189 Mesa, Arizona
dart4forte
I Live Here
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I Live Here
Joined: Feb 2003
Posts: 16,189
Mesa, Arizona
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I have the Powermaster 75 amp. Works great, puts out a constant 14.5 volts. Lights stay bright and the electronic ignition likes it.
“So if it’s on the internet it must be true”
Abe Lincoln
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