Good High End Alternator?

Good High End Alternator?

Postby ri$e*above [OP] » June 27th 2020, 8:00pm

I'm looking at updating my factory alternator to something high output. I will be adding stuff like a winch, light bars, fridge etc, but won't be doing anything to the stock audio. What brands/models do you recommend? I've been looking at Mechman, Brand X, Singer, Powermaster, JS etc etc and they all seem high quality.

Looking at my 2002 Safari, it looks like the alternator hookup is on the left side? Will an alternator with the right side hook-up work?

Cheers :thumbup:
CURRENT: 2002 GMC SAFARI AWD SLE 'GOLD DIGGER'. 5 INCH LIFT. G80. GT4.
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Re: Good High End Alternator?

Postby SportsBoy » June 28th 2020, 9:29pm

Do a search here on the site or google "astrosafari _______ " to find threads about alternators (or anything else) - I think some people use higher output ones from silverados or suburbans maybe.

Do you have A/C? Or a bypass pulley? The alt is the top left bracket, a/c is top right. Sure you could do it if you lengthened wires and cables, but I don't know why you'd want to do that and lose a/c.

Unless you mean you want to do dual alternators, in which case I have no idea and I'd say try the search - good luck!
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Re: Good High End Alternator?

Postby ri$e*above [OP] » June 28th 2020, 9:40pm

SportsBoy wrote:Do a search here on the site or google "astrosafari _______ " to find threads about alternators (or anything else) - I think some people use higher output ones from silverados or suburbans maybe.

Do you have A/C? Or a bypass pulley? The alt is the top left bracket, a/c is top right. Sure you could do it if you lengthened wires and cables, but I don't know why you'd want to do that and lose a/c.

Unless you mean you want to do dual alternators, in which case I have no idea and I'd say try the search - good luck!

Thanks for the advice :thumbup:

I have AC, but I mean the actual connector on the Alternator seems to be on the left of the unit on the Astro/Safari. But after market stuff and other cars/trucks/vans I've had, it's been on the right. Wondering if I need to buy Astro/Safari specific Alternator, or if I can flip around one of the units that have the connector on the right side?
CURRENT: 2002 GMC SAFARI AWD SLE 'GOLD DIGGER'. 5 INCH LIFT. G80. GT4.
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Re: Good High End Alternator?

Postby Big_kid » June 29th 2020, 1:04am

You might be able to "clock" the alternator by removing the screws holding the housing together, and without separating the halves, rotate the rear housing to the desired position. My FLAPS had to do that for my S10 once.
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Re: Good High End Alternator?

Postby tonydobbs » June 29th 2020, 1:15am

I have this link saved as a compatible HO alternator that just needs a longer belt, but please do your own research to confirm that this works:
https://www.amazon.com/ACDelco-335-1092 ... urban+1500
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Re: Good High End Alternator?

Postby ri$e*above [OP] » June 29th 2020, 2:14am

tonydobbs wrote:I have this link saved as a compatible HO alternator that just needs a longer belt, but please do your own research to confirm that this works:
https://www.amazon.com/ACDelco-335-1092 ... urban+1500


Thanks for the link :thumbup:

Big_kid wrote:You might be able to "clock" the alternator by removing the screws holding the housing together, and without separating the halves, rotate the rear housing to the desired position. My FLAPS had to do that for my S10 once.


Thanks :thumbup: I'll ask some companies if there units allow it to be clocked. Or maybe they give the option to have the connector on the left side with a custom build.
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Re: Good High End Alternator?

Postby plymouthcranbrook » June 29th 2020, 2:50am

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Re: Good High End Alternator?

Postby SportsBoy » June 30th 2020, 3:20pm

Rinny just grabbed a Mechman alt that is supposedly very high output - spendy though.
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Re: Good High End Alternator?

Postby Rinny » June 30th 2020, 4:47pm

https://www.astrosafari.com/viewtopic.php?f=76&t=142282
It is a quality built product and puts out big power.
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Re: Good High End Alternator?

Postby ri$e*above [OP] » June 30th 2020, 10:41pm

plymouthcranbrook wrote:Might try these folks:

https://www.qualitypowerauto.com/catalog.php


Thanks :thumbup:


SportsBoy wrote:Rinny just grabbed a Mechman alt that is supposedly very high output - spendy though.


Thanks :thumbup:


Rinny wrote:https://www.astrosafari.com/viewtopic.php?f=76&t=142282
It is a quality built product and puts out big power.


I was looking at the Mechmans...they seem real nice. Which one did you go with? Did you have to clock it so that the socket was on the left side, or did it already come like that?
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Re: Good High End Alternator?

Postby Rinny » July 1st 2020, 1:36pm

#8206250 250AMP. Call them, they are very helpful and will answer any questions you have.
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Re: Good High End Alternator?

Postby Mmusicman » July 1st 2020, 2:56pm

Rinny wrote:#8206250 250AMP.
Call them, they are very helpful and will answer any questions you have.

$399 (and higher) ... ouch!

How about this 250amp alternator at only $146 shipped from Amazon?
https://www.amazon.com/dp/B076QDNVZX/re ... ljaz10cnVl

I also see listings for 250A alternators on Ebay for $129 and less (incl shipping)
https://www.ebay.com/sch/i.html?_from=R ... r&_sacat=0

I suspect many of these alternators may be similar or identical rebuilds.
I will likely take a chance on one of these lesser priced units.

These look good too.. but again a little pricey...
http://www.nationsautoelectric.com/ad-244.html

I'm following this discussion because I'm upgrading my 2000 here shortly. The stock 105A Advance Auto parts unit just isn't keeping up..lol. Here in South Florida we are currently having regular temps in the mid-90's with sweltering humidity every day. My front and rear A/C is doing double-duty with both fans on MAX... plus high-powered electric fan, plus headlights and foglights, plus electric fuel pump, plus all the electronics!

But I need to be sure the high-output alternator can produce adequate charging voltage at idle as well. Some of the unit's I've seen do mention dramatic improvements here too.

Here's my rough consumption:
20A Front A/C fan (max)
20A Rear A/C fan (max)
20A Electric Radiator Fan
13A Headlights (55w X2)
13A Foglights (55w X2)
10A Fuel Pump (estimate)

This alone is close to 100amps of consumption (NOT including all the electronics).. which put my usage well over 100amps. Naturally I'm no where close to this at idle. I typically turn off my headlights/foglights (same circuit) when I'm running A/C on MAX.

My stock unit is NOT even close to keeping up.. I see voltages in the 11v range idling, and sometimes barely in the upper 12v range cruising. I sit at traffic lights with my foot on the throttle a little to help maintain some charging.

So anyone who does (or had done) a high-output alternator, share your experience.
I will likely pick something out this week.
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Re: Good High End Alternator?

Postby ri$e*above [OP] » July 1st 2020, 3:39pm

Rinny wrote:#8206250 250AMP. Call them, they are very helpful and will answer any questions you have.


Thanks :thumbup:

Mmusicman wrote:$399 (and higher) ... ouch!

How about this 250amp alternator at only $146 shipped from Amazon?
https://www.amazon.com/dp/B076QDNVZX/re ... ljaz10cnVl

I also see listings for 250A alternators on Ebay for $129 and less (incl shipping)
https://www.ebay.com/sch/i.html?_from=R ... r&_sacat=0

I suspect many of these alternators may be similar or identical rebuilds.
I will likely take a chance on one of these lesser priced units.

These look good too.. but again a little pricey...
http://www.nationsautoelectric.com/ad-244.html

I'm following this discussion because I'm upgrading my 2000 here shortly. The stock 105A Advance Auto parts unit just isn't keeping up..lol. Here in South Florida we are currently having regular temps in the mid-90's with sweltering humidity every day. My front and rear A/C is doing double-duty with both fans on MAX... plus high-powered electric fan, plus headlights and foglights, plus electric fuel pump, plus all the electronics!

But I need to be sure the high-output alternator can produce adequate charging voltage at idle as well. Some of the unit's I've seen do mention dramatic improvements here too.

Here's my rough consumption:
20A Front A/C fan (max)
20A Rear A/C fan (max)
20A Electric Radiator Fan
13A Headlights (55w X2)
13A Foglights (55w X2)
10A Fuel Pump (estimate)

This alone is close to 100amps of consumption (NOT including all the electronics).. which put my usage well over 100amps. Naturally I'm no where close to this at idle. I typically turn off my headlights/foglights (same circuit) when I'm running A/C on MAX.

My stock unit is NOT even close to keeping up.. I see voltages in the 11v range idling, and sometimes barely in the upper 12v range cruising. I sit at traffic lights with my foot on the throttle a little to help maintain some charging.

So anyone who does (or had done) a high-output alternator, share your experience.
I will likely pick something out this week.


They look cool. The Singer ones are nice too, although I've not contacted them regarding price and availability yet.

https://www.singeralternators.com/

I'm a little unsure how many Amps to go with, as my van is stock atm, so I'm trying to put together a list of potential upgrades I'll be getting down the road like winch, light bar/s etc etc. Gonna need a new battery too.
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Re: Good High End Alternator?

Postby Rinny » July 1st 2020, 5:21pm

I had one of the amazon ones and it did not last. As far as the price goes you usually get what you pay for and 400 bucks wont be missed over here, but my 12000lb winch wont burn up either. check out the price on a warn 12000lb winch. I am happy with the mechman so far.
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Re: Good High End Alternator?

Postby Ken2.7 » July 1st 2020, 6:33pm

My Top Street Performance AD 244 220amp alternator has kept my dual battery set up charged nicely. However I also used welding cable to the batteries and did an overall Big 3 wiring upgrade with special attention to all grounds and even added a few more. I’m trying to figure a way to get more airflow to the rear of the alternator where the air intake is located. I see some performance cars run duct work to it.
I added a link for the alternator and serpentine belt I used.
https://www.astrosafari.com/viewtopic.p ... 0#p1500662
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Re: Good High End Alternator?

Postby Rinny » July 1st 2020, 9:02pm

Ken, nice build brotha!! I was able to use the same belt, although I have a 5.7L in mine, and the wiring upgrade is a must, along with cleaning every ground. I used 1/0 copper strand wire and it was a direct bolt in.
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Re: Good High End Alternator?

Postby ri$e*above [OP] » July 4th 2020, 2:16am

Rinny wrote:I had one of the amazon ones and it did not last. As far as the price goes you usually get what you pay for and 400 bucks wont be missed over here, but my 12000lb winch wont burn up either. check out the price on a warn 12000lb winch. I am happy with the mechman so far.


I think the same way...I don't mind paying a little more for a good high end alternator/battery.


Ken2.7 wrote:My Top Street Performance AD 244 220amp alternator has kept my dual battery set up charged nicely. However I also used welding cable to the batteries and did an overall Big 3 wiring upgrade with special attention to all grounds and even added a few more. I’m trying to figure a way to get more airflow to the rear of the alternator where the air intake is located. I see some performance cars run duct work to it.
I added a link for the alternator and serpentine belt I used.
https://www.astrosafari.com/viewtopic.p ... 0#p1500662


Looks like a good alternator. Are you running many accessories? What's the welding cable mod you mentioned?

Could you mount some kind of 'U' shaped scoop (the U laying on it's side) to the inside of the frame to channel airflow to the rear of the alternator?
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