Alternator upgrade?

01 RED GT · April 1st, 2009, 12:10 AM

ok guys first off how many amps is my stock alternator producing on my 01 gt? now i have a jvc deck with a 500 watt rms alpine amp wired at 2 ohms to my infinity perfect sub it is putting too much drain on my electrical system, i do have a cap and yes i know its pointless i just like it for looks but i know thats not supposed to fix the problem all it does is store the voltage i already have produced by alt. but i think the main reason my system is having problems getting enough power is b/c i have the steed underdrive pullies and i know they cut down on free electrical power. i was lookin on american muscle and see they now have a 130 amp alternator 70 amps at idol, i was wondering if this was a big enough upgraded alternator to fix my problem, i also plan on upgrading my big 3 this summer as well

C MY 4D · April 1st, 2009, 12:12 AM

Put the stock pullies back on.... Underdrives don't help that much.

wraitherx · April 1st, 2009, 12:14 AM

i would start by upgrading the big 3 first since it is inexpensive then try with another alternator if worse comes to worse.

wraitherx · April 1st, 2009, 12:14 AM

Originally Posted by C MY 4D

Put the stock pullies back on.... Underdrives don't help that much.

i agree with him as well

01 RED GT · April 1st, 2009, 12:32 AM

stock pulleys are gone the main crank pulley was rusted to hell and i kina fucked it up tryin to pry it off without a pulley puller lol then got smart and borrowed one from autozone this was like 8 months ago when i was alot newer to the mustang world haha, but yeah ima do the big 3 upgrade soon, does any1 know what the stock alternator is producing though? b/c the one on american muscle does not seem that powerfull being 130 amps max

C MY 4D · April 1st, 2009, 12:34 AM

First thing is you have it underdriven..... Ask around I'm sure someone has a stock set laying around.

01 RED GT · April 1st, 2009, 05:00 PM

could i get away with just putting the stock alternator pulley back on or do i have to put all 3 pulleys back on? the only one i trashed was the crank pulley i still have the waterpump and alt. pulleys

C MY 4D · April 1st, 2009, 06:26 PM

The stock alt pulley is probably larger and it will cause your problem to get even worse.

bullitt ak · April 26th, 2009, 02:12 AM

if you cant get the stockers back u could raise your idle a tad... might be the easiest way to fix that if in fact that alternator being underdriven is the problem

April 1st, 2009, 12:10 AM	#1
01 RED GT Regular 2001 Mustang GT convt Join Date: Sep 2008 Location: southaven Posts: 103 iTrader: 0 reviews	Alternator upgrade? ok guys first off how many amps is my stock alternator producing on my 01 gt? now i have a jvc deck with a 500 watt rms alpine amp wired at 2 ohms to my infinity perfect sub it is putting too much drain on my electrical system, i do have a cap and yes i know its pointless i just like it for looks but i know thats not supposed to fix the problem all it does is store the voltage i already have produced by alt. but i think the main reason my system is having problems getting enough power is b/c i have the steed underdrive pullies and i know they cut down on free electrical power. i was lookin on american muscle and see they now have a 130 amp alternator 70 amps at idol, i was wondering if this was a big enough upgraded alternator to fix my problem, i also plan on upgrading my big 3 this summer as well __________________ mods-Short ram air intake, P.P. 70mm throttle body, o/r H pipe, magnaflow catback, Nitto 555 tires, Steeda short throw, Steeda UDP, sct x3 tuner. Next-lowering springs, Mac LT's, 3.73 or 3.90 gears, black saleens or cobras, and maybe some juice

April 1st, 2009, 12:12 AM	#2
C MY 4D Billy Weston 2003 Cobra 11.14@124.36 Join Date: Aug 2006 Location: Hampton, VA Posts: 4,806 iTrader: 8 reviews	Put the stock pullies back on.... Underdrives don't help that much. __________________ TT Build in progress....... Need work done to your car for a great price in Hampton Roads? Shoot me a PM.

April 1st, 2009, 12:14 AM	#3
wraitherx Moderator '99 SVT Cobra Join Date: Nov 2006 Location: Virginia Beach, VA Posts: 9,568 iTrader: 11 reviews	i would start by upgrading the big 3 first since it is inexpensive then try with another alternator if worse comes to worse. __________________ BUILD 2 IN PROGRESS

April 1st, 2009, 12:32 AM	#5
01 RED GT Regular 2001 Mustang GT convt Join Date: Sep 2008 Location: southaven Posts: 103 iTrader: 0 reviews	stock pulleys are gone the main crank pulley was rusted to hell and i kina fucked it up tryin to pry it off without a pulley puller lol then got smart and borrowed one from autozone this was like 8 months ago when i was alot newer to the mustang world haha, but yeah ima do the big 3 upgrade soon, does any1 know what the stock alternator is producing though? b/c the one on american muscle does not seem that powerfull being 130 amps max __________________ mods-Short ram air intake, P.P. 70mm throttle body, o/r H pipe, magnaflow catback, Nitto 555 tires, Steeda short throw, Steeda UDP, sct x3 tuner. Next-lowering springs, Mac LT's, 3.73 or 3.90 gears, black saleens or cobras, and maybe some juice

April 1st, 2009, 12:34 AM	#6
C MY 4D Billy Weston 2003 Cobra 11.14@124.36 Join Date: Aug 2006 Location: Hampton, VA Posts: 4,806 iTrader: 8 reviews	First thing is you have it underdriven..... Ask around I'm sure someone has a stock set laying around. __________________ TT Build in progress....... Need work done to your car for a great price in Hampton Roads? Shoot me a PM.

April 1st, 2009, 05:00 PM	#7
01 RED GT Regular 2001 Mustang GT convt Join Date: Sep 2008 Location: southaven Posts: 103 iTrader: 0 reviews	could i get away with just putting the stock alternator pulley back on or do i have to put all 3 pulleys back on? the only one i trashed was the crank pulley i still have the waterpump and alt. pulleys __________________ mods-Short ram air intake, P.P. 70mm throttle body, o/r H pipe, magnaflow catback, Nitto 555 tires, Steeda short throw, Steeda UDP, sct x3 tuner. Next-lowering springs, Mac LT's, 3.73 or 3.90 gears, black saleens or cobras, and maybe some juice

April 1st, 2009, 06:26 PM	#8
C MY 4D Billy Weston 2003 Cobra 11.14@124.36 Join Date: Aug 2006 Location: Hampton, VA Posts: 4,806 iTrader: 8 reviews	The stock alt pulley is probably larger and it will cause your problem to get even worse. __________________ TT Build in progress....... Need work done to your car for a great price in Hampton Roads? Shoot me a PM.

April 26th, 2009, 02:12 AM	#9
bullitt ak Hardcore Enthusiast 2001 mustang bullitt Join Date: Aug 2008 Posts: 1,033 iTrader: 0 reviews	if you cant get the stockers back u could raise your idle a tad... might be the easiest way to fix that if in fact that alternator being underdriven is the problem __________________ Last edited by bullitt ak; April 26th, 2009 at 02:29 AM.

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