Dual Alternators.....anyone done it?

[tom04841]

I have a spare alternator, and no ac. I want to install the spare where the ac was and run 2 alts since i have way too many electronics in the car and a single alt can barely keep up.

Anyone know how i would wire this up, or if it is even possible?

 

[thekellbeast]

I don't know anything about wiring it up, but there IS a kit for sale to mount the alternator in the stock A/C location. Saw the vendor announcement here.

 

[90laserRSfwd]

Are you running the stock DSM alternator? If so look into the Canadian spec alternator, I think the USDM ones are rated @ 80 amp, have to double check on that one, and the CDM one is rated @ 95 amp. I'll find out the def. numbers on those 2 and get back to you

 

[tom04841]

I was going to get the alt relocation kit for the 2nd alt. As far as the ratings, i believe the us is 75 and canadian is 90.

I would really like to run 2....i have a high power stereo, car pc, driving lights, blah blah blah.

 

[JWoodley]

Is there an aftermarket higher output unit?

 

[marcmsj]

Is there an aftermarket higher output unit?

Yes, I have a Bosch High Output on my car and it's 140amp. It's pretty expensive though so be ready to lay down some cash on it.

 

[timloomis]

I know stinger makes some very high amperage alternators. They are several hundred bucks though.

 

[talon187]

i just bought a new one from my work they make a 90 for our cars its about 250 and they do make a 140 i could get that to but the list price on it is huge my cost is about 300 and my cost on the 90 amp was 130 so yeah not worth the money if you ask me

 

[JWoodley]

300 vs. the extra costs of running another alternator + the headache of figuring out belt geometry, etc = a great value in your situation.

 

[coltkelz]

sorry to bring this back since its an old thread. but does anyone know where to get a high output alt for the 1g? i cant find any.

 

[bryanwheat]

sorry to bring this back since its an old thread. but does anyone know where to get a high output alt for the 1g? i cant find any.

Order a galant vr4 alternator.

 

[coltkelz]

the 90 amp? if so ive already got it and i need more

i want 140+ amps

 

[turboglenn]

swap to the saturn alt. There's some where on line that you can order them in about any output you want and they aren't that bad of price ( at least not in the 300 range as i recall they were under 200 bucks) BOlt up is simple, and although the OEM bracket and adjuster work there's madeto fit stuff in the works

 

[knochgoon24]

You may also be able to find a local alternator repair shop that will rewind a 1g alternator denser (to increase the amperage) and install heavy duty diodes (to handle the amperage) for a reasonable price.

I have a burnt out 140 amp 1g alternator in my possession that I've been meaning to get fixed, so I know it can be done.

You might also want to ask about running a smaller pulley to increase the rpm of the alternator. This should help boost output at idle, but you need to make sure you don't spin it too fast.

 

[turboglenn]

To addto knock goons input.. you can get "magnet wire" from TV repair shops or buy it online and re-wind your own alt. I've mademany staators (motorcycle alternators) from scratch.. If your system uses a regulator/rectifier (convert AC to DC you simply alternate the direction in which you wind the poles to get AC current) or wind them all the same direction for DC current

Then the main ways to increase output is to use a larger gauge of wire and do "more wraps' per pole.. it actually makes more volts that (and i'mno electricla engineer) but can be regulated down to the spec'd voltage but at higher amps (please correct me if i'mwrong about this but when i wind a 5 pole honda dirtbike stator i get a range of 120 to 140 volts AC, then when it's regulated down to 14-16v. i can draw a lot more amps off the higher volt unit when regulated to the lower voltage)

ANother thing i've found for amperage is twisting 3 strands of thinner wire together and then wid with that, not sure why but it seems to have a much stronger output than single wire doing the same amount of wraps

rewinding isn't as hard as shops want to make it sound, because then you'd be taking their "easy money" A lot of it's in the regulator system and havintg a good one makes a HUGE difference. I've even made my own using 4 diodes and inputting on opposite corner polesand pulling my voltage from the remaingin ones (how it makes it DC volts) from there i have to use a seperate regulator to get itdown to 12-16volts