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Dual alternators, idea..

78Suburban

78Suburban

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Anyone pulled off the AC compressor and used that bracketry with some modifications to mount a second alternator? I've got another stock gm alt, and I've got an old powermaster 1 wire 100 amp I could use. If anyone has done this, I would be interested in hearing about it. I would love to see pics. Any tips on properly discarging my R-12 AC system? Any tips on protecting alternators from mud (besides only playing on rocks :haha: ) I would kinda like to put my alternators to use. I hate that stupid air conditioner, which I don't think even works anymore.. Would love to hear some ideas.
thanks,
James
 
I mounted a second stock alternator in place of the A.I.R. pump. Does that count? I still stay cool in the summer, too. Really, all you need to mount an alternator is a couple of brackets. Then you just need a longer belt to go around both pulleys.

If you are giving up on the A/C compressor, that is the location to mount the York for your on-board air.
 
Still has r-12 in it . Man thats a good thing . And expensive to replace . Run the a/c .

We have half a pallet of 30 pounders left @ 1199.00 A JUG , that "disappeared" from inventory . I am pretty sure they went to the boss mans garage :thumb:
 
pauly383k10 said:
Still has r-12 in it . Man thats a good thing . And expensive to replace . Run the a/c .

We have half a pallet of 30 pounders left @ 1199.00 A JUG , that "disappeared" from inventory . I am pretty sure they went to the boss mans garage :thumb:
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Mine still has some R-12 in it, but it needs a recharge pretty soon. I'd love to stay with R-12, and won't convert to R-134 until R-12 is either unobtainable or costs waaaaay too much (which it doesn't yet). It's a significantly superior refrigerant.
 
I was talking to a commercial HVAC guy and he said to use r414. Said it works fine mixed with r12.

Anyone heard anything on this?
 
my unlce mixed 12 and 134, never had any problems. i guess over time it can eat the seal but 405 summer and it hasnt been a problem for my uncle in nc.
 
Not to hijack the A/C thread, but you can't really run two alternators in parallel. The stronger one will carry the load every time. What you can do it make two separate circuits with two separate batteries. One can power your rig's stock components and the other can carry the accessories like lights, winch, stereo, etc.
 
79Beast said:
Not to hijack the A/C thread, but you can't really run two alternators in parallel. The stronger one will carry the load every time. What you can do it make two separate circuits with two separate batteries. One can power your rig's stock components and the other can carry the accessories like lights, winch, stereo, etc.
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WOW.. I didn't realize this.. I guess I'm gonna have to rethink my plan. Hmm... decisions decisions..
thanks,
James
 
79Beast said:
Not to hijack the A/C thread, but you can't really run two alternators in parallel. The stronger one will carry the load every time. What you can do it make two separate circuits with two separate batteries. One can power your rig's stock components and the other can carry the accessories like lights, winch, stereo, etc.
Click to expand...

What the heck do the superduties with two alts do then? Are the alternators designed differently in them?
 
dogdaysunrise said:
I was talking to a commercial HVAC guy and he said to use r414. Said it works fine mixed with r12.

Anyone heard anything on this?
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I advocated that at one time . Not any more .

I had r-12 when I got mine , added some r414 ( generically known as Hotshot thanks to Icor ) , worked fine .

Last year clutch went out , been on since 1983 . Bought whole compressor for 10 bucks more than the clutch . Had my buddy vac the system down for me .

So now I have a whole charge of r414 , 80 percent of what the 12 charge would be . Works like a top for awhile .

Then it got to be real hot out in AZ .

In a refrigerator indoors its awesome .

Mixed with my original 12 it was awesome .

By itself in AZ during 120 degree days the headpressure skyrockets and the clutch burnt out again :eek1:





BTW , I sell the stuff at my store .
 
my exsisting system already has r12. It doesnt get too hot in winnipeg too often, so do you figure this would be okay? Im just looking for a cheap couple of years lol.
 
Hmmmm... i live up here in the cool pines and i was wondering what all this r-12, AC stuff is??
 
what kind of gains are you looking for by running an extra alternator? i think it'd be cool, but can't exactly figure out how i would use something like that if i were to rig it up.
 
colbystephens said:
what kind of gains are you looking for by running an extra alternator? i think it'd be cool, but can't exactly figure out how i would use something like that if i were to rig it up.
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I want a bunch of goofy arse lights, and maybe one day a rear winch....
thanks,
James
 
what he said tho is if one alt is bigger it wont work super duties have 2 but they are the same size and work in conjunction with the other as well as having dual batteries
 
Are you going to be needing more juice than a single 140-amp alt would supply? How about a single 200-amp alt (Powermaster sells one)?
 
1985_K5_Silverado said:
Are you going to be needing more juice than a single 140-amp alt would supply? How about a single 200-amp alt (Powermaster sells one)?
Click to expand...

that might not be as cool tho. :rolleyes:
 
I would consider going w/ 1 high amp alt instead of 2. If you have only one then you still have room for a on-board air compressor. Plus, the alternator you can get these days made special have a killer output.
 
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