MoparFins

Techical Discussions => Tech- - ELECTRICAL => Topic started by: Rob Molloy on January 31, 2015, 01:31:05 PM

Title: Alternator on RB 383
Post by: Rob Molloy on January 31, 2015, 01:31:05 PM
Ok, I am trying to convert my '59 to an alternator. I bought the adapter brackets, but the alternator is hitting the distributor. (The distributor cap is off for the picture, just to align the alternator, but it will not go back on..) Picture is below. Any advise??
(http://www.moparfins.com/forum/attachments/235/download_20150131_143207.jpeg)

Title: Alternator on RB 383
Post by: Steve on January 31, 2015, 01:41:20 PM
I dunno rob.  Looks like you got sold a bag of goods.

Just a word of warning, you'll have to put a regulator on the gauges now.  Your temp and Gas gauge will pin
Title: Alternator on RB 383
Post by: dana44 on January 31, 2015, 04:03:59 PM
Definitely need the RB brackets. A wiring diagram that matches the alternator would be a good idea, too, make sure things are wired properly after the fact.

Title: Alternator on RB 383
Post by: Rob Molloy on January 31, 2015, 04:16:26 PM
Quote from: dana44
Definitely need the RB brackets. A wiring diagram that matches the alternator would be a good idea, too, make sure things are wired properly after the fact.

Thanks for the input. Do you happen to know where I would get the RB brackets? All I have been able to find are BB brackets...
Title: Alternator on RB 383
Post by: Rob Molloy on February 01, 2015, 10:24:37 AM
Would the 440 brackets work? It looks like it takes the mount out a little more...I may try a thinner alternator as well though.
Title: Alternator on RB 383
Post by: Steve on February 01, 2015, 06:38:08 PM
If i recall correctly, your 383 is an RB.  If so, the 440 Brackets are the right ones.  Then you can install a traditional Mopar Alternator.  Wiring is really simple.


(http://www.moparfins.com/forum/attachments/5/100_1011_-_Copy.JPG)



Title: Alternator on RB 383
Post by: Snotty on February 02, 2015, 08:48:59 AM
Quote from: rob_molloy
Would the 440 brackets work?



Title: Alternator on RB 383
Post by: dana44 on February 03, 2015, 06:57:30 AM
Ditto. If there are three wires (a second field wire), the last one whatever color it is goes to the positive side of the coil. They are usually on the Lean Burn systems and it is used to power all the sensors and ties into the coil. Without it, it won't charge (ask me how I know).

Title: Alternator on RB 383
Post by: Steve on February 03, 2015, 06:30:17 PM
Ed  I need to correct you.  The 12V for the charging system comes from before the ballast resistor.  The voltage going to the regulator is what it reads.  You can't go to the coil because that is 9 volts
Title: Alternator on RB 383
Post by: Rob Molloy on February 06, 2015, 07:07:50 AM
Figured out part of the problem! (Hopefully! LOL) Pictured below is the new water pump housing that I had to buy. the hole that I am pointing at is where the top of the bracket is supposed to go...the same hole that my current water pump doesn't have. So now the alternator will be moved down by at least an inch, and moved outwards. Hopefully this works. Picked up a new water pump at the same time as I have been having some overheating issues. 
(http://www.moparfins.com/forum/attachments/235/WPH.jpg)



Title: Alternator on RB 383
Post by: dana44 on February 06, 2015, 07:24:20 AM
Quote from: POLARACO
Ed  I need to correct you.  The 12V for the charging system comes from before the ballast resistor.  The voltage going to the regulator is what it reads.  You can't go to the coil because that is 9 volts

We are both right. Had this problem on a 84(?) Ramcharger. The second field wire attaches, too, not instead of. With the wiring diagram for the two field wire alternator, it powered all the sensors (about five of them) and to the positive side of the coil. Once all the sensors were deleted, that wire had to go to the coil to keep charging. It was weird, but wouldn't charge otherwise.  Not to worry, it took em about an hour to trace the connection with the wiring diagram.

Title: Alternator on RB 383
Post by: Steve on February 06, 2015, 07:35:15 PM
Have you done the radiator yet?
Ed.  Did the 84 have a dry coil?
Title: Alternator on RB 383
Post by: dana44 on February 07, 2015, 08:20:37 PM
Stock little coil bolted to the manifold. I think there were only two or three years they used the double field wire alternators. It is in the wiring diagram and like I said, took me a while to whittle out the wiring with all the sensors and narrow it down to the second field wire going to the coil.

Title: Alternator on RB 383
Post by: Steve on February 07, 2015, 08:33:21 PM
No I was asking if the 84 had a dry coil or a wet one.  
Title: Alternator on RB 383
Post by: Rob Molloy on February 09, 2015, 12:53:16 PM
As she sits right now. Need to pick up a new drain plug for the radiator on the way home, but I think it's looking good. 
(http://www.moparfins.com/forum/attachments/235/20150208_105552.jpg)

(http://www.moparfins.com/forum/attachments/235/20150208_105600.jpg)

Title: Alternator on RB 383
Post by: Steve on February 09, 2015, 02:43:54 PM
(http://www.moparfins.com/forum/smileys/smiley20.gif)

Title: Alternator on RB 383
Post by: dana44 on February 09, 2015, 08:37:05 PM
See that top bolt on the alternator? Need to get a bracket on the back side of that bolt, give it strength and keep it from bending, otherwise it will. Yeah, my Dad bent mine when he decided to do a hard pull on my '68 Charger when I ran a 361 big block in it.

Title: Alternator on RB 383
Post by: Rob Molloy on February 10, 2015, 07:45:27 AM
I need to get he head tapped out for that. There is no mount to put the longer bolt in there.
Title: Alternator on RB 383
Post by: dana44 on February 10, 2015, 08:28:29 AM
The RB uses a little thick plate that bolts to the existing head bolt holes in the head and then a screw end on it for a longer bolt, and a little tube washer that was about an inch, inch and a half in beteen to take up the space. Might be what you need. It is RB specific for the taller block and using the big block heads (compared to the B block deck height).

Title: Alternator on RB 383
Post by: Rob Molloy on February 10, 2015, 09:35:48 AM
Do you happen to have a picture of this? There is a guy here in Vegas that has TONS of Mopar parts, and may have that. Thanks!!!
Title: Alternator on RB 383
Post by: Steve on February 10, 2015, 11:15:52 AM
You're doing a great job on that old tub Rob
Title: Alternator on RB 383
Post by: Rob Molloy on February 10, 2015, 12:22:57 PM
Thank you much. My wife sent me a picture earlier of a puddle of coolant. luckily it looks like the lower hose just needs tightened. Phew. LOL.
Title: Alternator on RB 383
Post by: dana44 on February 10, 2015, 08:12:21 PM
Dang it , no, but picture this. The thickness is same as the front bracket thickness, and if I remember correctly, heck, Steve may have one, but it is about three inches long about one inch wide, rounded ends, and two holes line up with a pair on the head and the third hole, if not mistaken, has a nut welded to the back of it. If not, it is smooth so you can run a bolt through.

Steve, do you know what I am talking about for the alternator upper bracket,  where the 383 alternator bolts into the head, there is a little metal extension that the alternator bolts to since the taller 413/440 block is out of alignment. Tob-molloy needs a picture of the bracket.