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New Alt...........Wow I'm Confused

Old 04-21-2008, 06:28 AM
0 Watt CAFz'r
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New Alt...........Wow I'm Confused

Alright so my whole system does about 800rms.
Shortly after installing the stereo my battery goes, and i don't think that was a coincidence.
My stock alt is only 70amps.
So i go to get a new battery thinking optima yellow top ($250) and the guy is telling me that it won't help with anything, that i need a new alt, so i get a cheapo $90 battery.
So should i get a new alt?
I seen this one: QQrdZ1QQssPageNameZWD1VQQcmdZViewItemQQ_trksidZp16 38Q2em118Q2el1247
its $200 shipped 160 amps
cause i know some people say alt, some say new battery, some say big 3, some say extra battery (i know caps are useless)
so what should i do?
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Old 04-21-2008, 06:36 AM
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i have 1500+ watts for bass and another 300+ watts for mids and highs and being run off a stock 80 amp alt with a yellow top under the hood and a yellow top in my trunk. Before this set up i have 1000+ watts for bass and 300+ watts for mids and highs with a 80 amp alt and one yellow top under the hood with no problems. I would have got the yellow top first and see what happens. They do say to upgrade the alt first but i always did the battery first and had no problems. I had the system in my car now for 3 years and i've been using the same stock alt in my car for 5 years.
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Old 04-21-2008, 07:12 AM
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The big three is an absolute must and it should be 1/0 guage. This should be the first thing that you do, because more often then not the factory charging system wiring is 10 gauge and if you are really lucky 8 gauge. You likely could get away with the stock alt and the yellow top with no problems for your system provided you do the big 3.
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Old 04-21-2008, 01:57 PM
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I'm a big beleiver in a bigger alt. The car needs lots of that juice.
my car came with a good size alt, but it needs it.
Rear defrost, heater fan, rad fans are electric, A/C, lights, accessoies all need current and your battery can only supply what it gets fed long term.
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Old 04-21-2008, 05:53 PM
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i can't search for "big 3" it says the words aren't long enough. is there a how to or anything?
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Old 04-21-2008, 08:26 PM
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Big is going to do little with a 70 amp alternator, it would help but lets get real here.. why not do both??
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Old 05-22-2008, 08:08 PM
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anybody know where i can get a HO alternator? no shops in the city have anything like that, and the internet doesn't seem to be much help either. what company did you guys go with?
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Old 05-22-2008, 09:46 PM
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check out this website, and call Raymond Knight. Great guy, and does really good work. They do ship their products.

SVA Power Products
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Old 05-26-2008, 11:00 AM
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sweet, thanks. i sent them an email, we'll see what they have. (i have a fairly rare car)
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Old 05-26-2008, 12:30 PM
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Find the case type for yours and you may be surprized that another car may have a stock hi-output one you can use.I am in the same boat with my Volvo not many make a 300amp alt.I may end up going to a Prestolite like my truck and other cars as you can`t kill them and you can even weld from some they make.
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