Can you get a alternator with a higher output (amps) than stock for 83 BJ60 3B engine
Higher output alternator
- Thread starter fusionworks1
- Start date
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What do you plan to do for vacuum?
You could always rig up a second alternator. If you have the shop and tools to do some light fabrication, you could make or modify a bracket to run it on one of your existing belts.
What amps are you getting now? Any auto electrician can get your alternator rewound for higher amp out put.
What is yours putting out now? It should be 55 amps, I finally got mine rebuilt properly and it made a huge difference. I did rig up a second alternator in place of my compressor, but not necessary yet to have it running.
If you can do some fabrication work, you can mount just about any alternator you want (that will fit of course). There are some popular swaps, so try searching.
Here's my common alternator rant. I suggest you don't get one of these rewound for higher output alternators. My feeling is that first of all, they are overly optimistic of the output. Second, and more important, it wasn't designed for this. Heat is a killer of alternators. If the alternator wasn't designed for high output (and thus high heat), the case wasn't designed to dissipate this heat. As heat goes up, output goes down and so does the lifespan of the alternator. Take a look at applications that require lots of alternator (ambulance, etc.) and none will have a small alternator. I run a 200 amp Leece Neville and the sucker is huge. End rant.
Here's my common alternator rant. I suggest you don't get one of these rewound for higher output alternators. My feeling is that first of all, they are overly optimistic of the output. Second, and more important, it wasn't designed for this. Heat is a killer of alternators. If the alternator wasn't designed for high output (and thus high heat), the case wasn't designed to dissipate this heat. As heat goes up, output goes down and so does the lifespan of the alternator. Take a look at applications that require lots of alternator (ambulance, etc.) and none will have a small alternator. I run a 200 amp Leece Neville and the sucker is huge. End rant.
ntsqd
technerd
I will go to the highest stock output offered in any particular alternator case. I won't go past that for the reasons Cruzerman listed.
Anyway, don't the 3B alt's have a vacuum pump piggy-backed onto them? That would limit the options without working out some other vacuum source.
Anyway, don't the 3B alt's have a vacuum pump piggy-backed onto them? That would limit the options without working out some other vacuum source.
Search NPR 3B alternator upgrade. The Isuzu commercial trucks have an alternator that is about 65amps and HAS a vacuum pump already on it.
(this is from memory)
(this is from memory)
May not be of much help but I finally broke down and bought a Mean Green alternator for my fj60. This thing rocks...give them a call. They may make something for your application.
About rewinding...I'm not sure how much I trust the ratings and life expectancy.
About rewinding...I'm not sure how much I trust the ratings and life expectancy.
- Thread starter
- #10
Thanks for all the feed back. Reason for upgrade is the lights being installed on roof rack,front bumper and a power amp for sound. Being an electrician I am somewhat familiar with load characteristics. If rewound and rewound for the load heat generation shouldn't be an issue as the wire and wire insulation will be rated for the output. I would prefer a stock upgrade. Throwing out there what is the output on a stock 3B with vacuum pump. Thanks in advance
ntsqd
technerd
The wire and insulation of a re-wind might up to the task, but what about the rest of the components in the alternator?
- Thread starter
- #12
True. The body can't be modified. But that being said although wire gage size hasn't changed the properties of insulating materials have allowing for higher rated loads in smaller areas. As you know things are getting smaller. And in note as we'll the load characteristics of wire has improved allowing for the electrical code to up the amperes on wire sizes. I have a spare unit I am going to get rewound. The stock alternator is 55 amps going to take to a motor rewind shop and see what they can do. Will post when done.
Any update on the spare unit? Did you get it rewound?
Tapage
Club 4X4 Panamá
Why bother .. source a 110 amps alternator from Hyundai Galloper .. it's 12V and vacuum pump included in the back .. I used to run one in Tencha for like a year before I jump into Hydrobooster and ran the amp I really want ..
