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alternator upgrade enough?

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=102710
Printed Date: June 12, 2024 at 1:20 AM


Topic: alternator upgrade enough?

Posted By: mrjoeyjiffy86
Subject: alternator upgrade enough?
Date Posted: March 02, 2008 at 2:37 PM

I'm about to get my alternator upgraded to 200 amps. My system consists of :

hifonics txi 4006: (ill be running 100wx2 @ 4 ohms)
and
hifonics bxi 2006d:(ill be running around 1500w @1.5 ohms)

of course there are subs and doodie, but this is pertaining to my electrical. Will the big 3 alternator upgrade be enough? Im still using a stock battery and I dont care about running the stereo with the truck turned off.

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2001 Chevrolet Tahoe

Waiting to be installed:
Infinity reference 6022i 6.5 2-way
Hifonics titan txi 4006
Hifonics brutus bxi2006
Pioneer DEH-P780mp
Waiting for my paychecks :(
(2) Jbl W12gti



Replies:

Posted By: sedate
Date Posted: March 02, 2008 at 3:40 PM

This is questionable - if you intend to have your alternator rewound this can cause all sosts of problems - it sort of changes the 'powerband' of the alternator and generally they end up producing <12v@idle - this would be particularly disastrous for a stock SLI battery that has seen any use.

Honestly - 1700 hifonics watts really isn't that untenable with a stock charging system - I'd start with a Deep Cycle battery, this is important for many more reasons than running the system with the truck off - Optima or Kinetik are the ideal places to start here- I'd be suprised if you exceed 100-amp pulls on a regular basis.  I imagine that this can be done easier, with fewer side effects, with a proper battery.

Anyway - if you are hell bent on a new alt, look into having one built-to-order instead of simply rewound - lemmie see if I can find a link - but this is expensive - very heavy on the $$$.  You'll spend more on the alt than the amps.  

Regardless of your decision here, the Big 3 with 4 gauge (larger is going to be of limited utility for the short runs under the hood) should certainly be done.



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"I'm finished!" - Daniel Plainview





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