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Old 03-30-2009, 05:48 PM   #1
RyanBeemer
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thinking of this HO alternator

I currently have two amps, one drawing at MAX 1200W and another drawing 2400W at MAX. I dont think I ever come close to using all that power but I do need a new HO alternator, as my lights are always flashing/dimming. I would like to have a 200A+ alternator. I can't get any HO alternators in town, no one will order them. I was looking at:

http://www.db-starter-alternator.com...2003%20%208279

Anyone know? Good or bad?
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Old 03-30-2009, 08:23 PM   #2
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ok no.
whats the RMS of the amps you have installed?
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Old 03-30-2009, 09:05 PM   #3
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Wait I thought the design changed in 03-05 and is different 99-02?? That says its for 01-03... If I have been wrong this entire time I am going to be pissed .
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Old 03-31-2009, 12:01 AM   #4
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Originally Posted by cardude007617 View Post
ok no.
whats the RMS of the amps you have installed?
one is 1200W rms - Model:KAC-X1R

other is 600W rms - Model:KAC-X4R
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Old 03-31-2009, 12:43 AM   #5
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ok excelon amps. that helps.

have you done any other electrical upgrades? do you still have your factory or oem quality battery? getting a deep cycle; optima, orbital, or DEKA would help alot not only in run time but with the even-ness of voltage.

next id do the big 3 upgrade.

what size wire do you have to these amplifiers?
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Old 03-31-2009, 12:46 AM   #6
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I would double check the fitment of that alt also... I was always told by people on here it changed in 03 and pretty muc hthe only way tio get a HO alt for an 03 was to go custom. Dominick Irragi being the #1 choice it seems.
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Old 03-31-2009, 12:08 PM   #7
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ok excelon amps. that helps.

have you done any other electrical upgrades? do you still have your factory or oem quality battery? getting a deep cycle; optima, orbital, or DEKA would help alot not only in run time but with the even-ness of voltage.

next id do the big 3 upgrade.

what size wire do you have to these amplifiers?
Still have stock alt/wires. I would change all the wires if I upgrade the alt. Do not know the guage off the top of my head, but do know I have a 160A fuse right off the battery to the amps. Don't have a deep cycle battery, though I have thought on adding one. The are just hard to get were I live, and they are pricey.
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Old 03-31-2009, 01:10 PM   #8
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fuse size is irrelevant to wire gauge. do you have multiple wire runs or just 1 run of 0 gauge for your two amps?

anyways, i'd look into a bigger/upgraded battery. they can make a world of difference.
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Old 03-31-2009, 01:59 PM   #9
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fuse size is irrelevant to wire gauge. do you have multiple wire runs or just 1 run of 0 gauge for your two amps?

anyways, i'd look into a bigger/upgraded battery. they can make a world of difference.
Well I just looked at the wire and it if 4 guage coming off the battery, there is only one wire coming from the battery to amps. I will be getting a second battery but everyone wants between $400-$600.

I will be upgrading that wire to 0 guage. My battery puts out 800CA, but my lights always flicker even driving on the highway with the stereo turned down, so my main thought was to try this HO alt, upgrade the wire, and in a couple of months get a deep cycle battery.

Last edited by RyanBeemer; 03-31-2009 at 02:28 PM.
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Old 03-31-2009, 02:47 PM   #10
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slow down .

how old is your battery? are the connections on the battery and your grounding points clean?
4gauge is kinda small wire for BOTH amps. you could do what I did and keep your 4G for your sub amp and just get an 8g run for your 4 channel.

i dont think you need a second battery with that system. a strong main battery should cover it okay.
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Old 03-31-2009, 03:09 PM   #11
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Battery is two years old. All the connections/terminals are good.
I will see whats around for a battery. My wire has one four guage from the battery, it then goes to a fuse block and then splits into two four guage wires.
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Old 03-31-2009, 05:04 PM   #12
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I guess I am talking to myself .
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Old 03-31-2009, 05:52 PM   #13
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Quote:
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I guess I am talking to myself .
Sorry Jake, I wasn't ignoring you. Just didn't post a responce. I will have to look at that alt because mine is an 03, and I know there was some differences, and I can't get a strut bar on, yet
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Old 03-31-2009, 10:09 PM   #14
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ehh 4 gauge is a little thin for this application. but iunno.

do you have the voltage drops at only idle or all rpms?
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Old 04-01-2009, 11:31 AM   #15
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ehh 4 gauge is a little thin for this application. but iunno.

do you have the voltage drops at only idle or all rpms?
The voltage is worst when idle, I can see my headlights flicker, open the door and the interior light will flicker too. On the highway is better, but I can still see the headlights flicker. The wire I am not to worried about because I can replace it, and I will if I do get this HO alt. I dont want to have all that power and limit it because of the wire.
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Old 04-01-2009, 11:50 AM   #16
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i dont know, sounds like stuff is just wearing out to some extent. upgrade some of the wiring up front (big 3) and see if that helps. changing that is definetly cheaper than a HO alternator.

i will say though, the combination of HO alt, deep cycle battery, and the big 3 done creates one hell of a stable electrical system , i know from my own car
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Old 04-01-2009, 01:01 PM   #17
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That is possible, though I hope as least as possible. I want to do this once, and do it right the first time. So if this alt will work, or even if I have to get a custom one I will. But I will do the alt, wires from battery, and wires to the amps. Then look around town(I don't think anyone will ship batteries in mail) for a deep cycle battery, that is not from Canadian Tire(only place in town that has them in stock all the time)
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Old 04-01-2009, 03:29 PM   #18
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OT: the place i bought mine from (motor city reman) stopped carrying 2001 alts, theyre stopping at 00 now.... what the hell
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Old 04-09-2009, 03:12 AM   #19
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HO alternator option

Try doing this...
Get a load check done on your current battery. If your current battery cannot pass a load check, thats the voltage drop problem.
Have your voltage regulator checked at the same time. Most GM cars have the voltage regulator inside the alternator. If you are taxing your current electrical system beyond its working capability, you may have damaged your voltage regulator inside the alternator. Once that sucker goes, the electrical system cannot properly keep your battery charged.
If those two tests go perfectly, consider a stiffening cap before buying a HO alternator. This way, the cap is giving consistant voltage to your amps. Its kinda like another battery in the system.
Upgrading your battery, alternator and other wiring upgrades are good, but can cost lots of money.
At least you're asking questions and not just guessing on what to do.
Good luck.
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Old 04-09-2009, 10:56 AM   #20
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i got a powder coated black 200 amp HO Alt, i purchased from someone here on the forum a few years back, it was only on my car for about 4 thousand miles. (HO alts require a slightly higher idle, or a smaller alt pulley).

I had DHP so i raised the engine idle. it's just been sittin in the garage. I'll take 100 shipped.

as far as brand I don't have any of that, the guy who sold it to be said it was new, when I got it, i didn't have any reason to believe it wasn't new. worked just fine. (only thing i will say is that it squeeked with a standard belt, i used the Gator belt.
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