alternator for electric fans

stfudvs · July 21st, 2009, 08:49 PM

switching to two i believe 12 inch electric fans and a better radio system (video/nav deck)

will a 100amp alternator be sufficient or do i need to go 140 or even 3g ?

anyone using one of these kits or have heard anything about these kits
86-93 5.0L MUSTANG COMPLETE RADIATOR UPGRADE KIT FOR MANUAL TRANSMISSION MUSTANG

also, thinking about switching to a electric water pump, would like to get one less pulley on my belt and like the minimal look

ReverendDexter · July 21st, 2009, 09:04 PM

the better deck shouldn't draw that much more power than the stock unit (assuming you're not running an amp), and the fans shouldn't be on that often (especially in Reno).

I would think that so long as you don't have UDPs, the 100amp should be fine.

stfudvs · July 21st, 2009, 10:18 PM

i will have udp's and the electric water pump, i should be good with 100 ?

yea reno weather is great

superbean · July 21st, 2009, 10:20 PM

I would go with a 130 amp setup..

ReverendDexter · July 21st, 2009, 10:21 PM

Originally Posted by stfudvs

i will have udp's and the electric water pump, i should be good with 100 ?

yea reno weather is great

I'm not sure what the extra load of the electric water pump would be; hopefully someone that's running one can chime in.

My very unfounded suggestion would be to bump up to the 140.

mxnate116 · July 21st, 2009, 11:03 PM

go for a 3g i picked mine up for 35$ at a junkyard and about 30 bucks in wiring(went to a expensive car audio shop for it)

jtyson8602 · July 21st, 2009, 11:32 PM

Originally Posted by mxnate116

go for a 3g i picked mine up for 35$ at a junkyard and about 30 bucks in wiring(went to a expensive car audio shop for it)

+1 3g runs my two electric fans. No stereo or electric water pump though. Depending on what kind of fans you use that will make the biggest difference on what amperage you need. the water pump shouldn't pull much and the stereo hardly any at all. If you run an amp then just ad a good 5 farad capacitor and that will keep up with your stereo without killing the car

Iownastang · July 22nd, 2009, 12:38 AM

Most electric water pumps only draw around 10 amps.. Some such as csr pumps only draw like 6

mxnate116 · July 22nd, 2009, 12:44 AM

my 3g runs my fans 300w and 125wx2 amps and stays well above 12v all the time

1slo5.0 · July 22nd, 2009, 01:21 AM

Originally Posted by stfudvs

switching to two i believe 12 inch electric fans and a better radio system (video/nav deck)

will a 100amp alternator be sufficient or do i need to go 140 or even 3g ?

anyone using one of these kits or have heard anything about these kits
86-93 5.0L MUSTANG COMPLETE RADIATOR UPGRADE KIT FOR MANUAL TRANSMISSION MUSTANG

also, thinking about switching to a electric water pump, would like to get one less pulley on my belt and like the minimal look

Go with a 3G. Easy upgrade.

stfudvs · July 22nd, 2009, 02:10 AM

that settles that

3g it is

thank you gentlemen

July 21st, 2009, 08:49 PM	#1
stfudvs Regular 1989 Mustang LX 5.0 Join Date: Jan 2009 Location: RENO NV Posts: 328	alternator for electric fans switching to two i believe 12 inch electric fans and a better radio system (video/nav deck) will a 100amp alternator be sufficient or do i need to go 140 or even 3g ? anyone using one of these kits or have heard anything about these kits 86-93 5.0L MUSTANG COMPLETE RADIATOR UPGRADE KIT FOR MANUAL TRANSMISSION MUSTANG also, thinking about switching to a electric water pump, would like to get one less pulley on my belt and like the minimal look __________________ if you were on a bicycle and we were going up hill i could beat you in a race Last edited by stfudvs : July 21st, 2009 at 09:05 PM.

July 21st, 2009, 09:04 PM	#2
ReverendDexter Devil's Advocate '98 Cobra/'90 GT 'vert Join Date: Jan 2007 Location: Santa Rosa, CA Posts: 3,836	the better deck shouldn't draw that much more power than the stock unit (assuming you're not running an amp), and the fans shouldn't be on that often (especially in Reno). I would think that so long as you don't have UDPs, the 100amp should be fine. __________________ War is Peace \|\| Freedom is Slavery \|\| Ignorance is Strength Founder of the DMC

July 21st, 2009, 10:18 PM	#3
stfudvs Regular 1989 Mustang LX 5.0 Join Date: Jan 2009 Location: RENO NV Posts: 328	i will have udp's and the electric water pump, i should be good with 100 ? yea reno weather is great __________________ if you were on a bicycle and we were going up hill i could beat you in a race

July 21st, 2009, 10:20 PM	#4
superbean Hardcore Enthusiast 1998 Cobra 13.24@105.66 Join Date: Aug 2008 Location: North Carolina Posts: 1,753	I would go with a 130 amp setup.. __________________ weeee foooord!

July 21st, 2009, 11:03 PM	#6
mxnate116 Enthusiast 88 mustang GT Join Date: Jun 2007 Location: Spokane, WA Posts: 751	go for a 3g i picked mine up for 35$ at a junkyard and about 30 bucks in wiring(went to a expensive car audio shop for it) __________________

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July 22nd, 2009, 12:44 AM	#9
mxnate116 Enthusiast 88 mustang GT Join Date: Jun 2007 Location: Spokane, WA Posts: 751	my 3g runs my fans 300w and 125wx2 amps and stays well above 12v all the time __________________

July 22nd, 2009, 02:10 AM	#11
stfudvs Regular 1989 Mustang LX 5.0 Join Date: Jan 2009 Location: RENO NV Posts: 328	that settles that 3g it is thank you gentlemen __________________ if you were on a bicycle and we were going up hill i could beat you in a race

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