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Need help on Alternators

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Old 01-27-2008, 08:48 PM
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Default Need help on Alternators

So we have 500 efi engines and I need to get new alternators. We need to up the amps , so where can we get some that are on steroids. We run about 8000 watts and 30 + speakers ,+ 4-12 inch subs,+ 2- 10 inch subs and 4 tvs.
We had 8 batteries in the boat but it slowed me down 8-9 miles per hour. So we are on a search for some muscle. The alternators on the engines are very small factory ones.
Thanks for the help.
Jeff and Jessica
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Old 01-27-2008, 08:53 PM
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So we have 500 efi engines and I need to get new alternators. We need to up the amps , so where can we get some that are on steroids. We run about 8000 watts and 30 + speakers ,+ 4-12 inch subs,+ 2- 10 inch subs and 4 tvs.
We had 8 batteries in the boat but it slowed me down 8-9 miles per hour. So we are on a search for some muscle. The alternators on the engines are very small factory ones.
Thanks for the help.
Jeff and Jessica


Seriously, I think a generator is what you need.



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Old 01-27-2008, 09:06 PM
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We do carry a small 2000 Honda with us , but the batteries never can charge all the way with these small alternators.
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Old 01-27-2008, 09:06 PM
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Quote:
Originally Posted by satisfied1 View Post
So we have 500 efi engines and I need to get new alternators. We need to up the amps , so where can we get some that are on steroids. We run about 8000 watts and 30 + speakers ,+ 4-12 inch subs,+ 2- 10 inch subs and 4 tvs.
We had 8 batteries in the boat but it slowed me down 8-9 miles per hour. So we are on a search for some muscle. The alternators on the engines are very small factory ones.
Thanks for the help.
Jeff and Jessica
I have 6 ten in subs and 4 6x9s I had the same problem. Found a place in FL called The Battery Shack called him up he sent me a 160amp alternator I've had no problems sence. I have three batteries. It took me two years to work all the bugs out. Waves are the hardest on a stereo. I don't have the number to that place any more. Good luck.
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Old 01-27-2008, 09:47 PM
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We do carry a small 2000 Honda with us , but the batteries never can charge all the way with these small alternators.
Have you thought about one of the larger water cooled marine types. I have seen a number of hot boats with them, and they are very quiet. Infact, with the stereo off, you can barely hear them run while rafted up. Sorry I do not know the manufacturer's name.



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Old 01-28-2008, 12:28 AM
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You should be able to take them in to an alternator rebuild place and have them bump up the amp output.
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Old 01-28-2008, 10:33 AM
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dbelectric on the web. Best/ cheapest marine out there. Tell them Kennyo sent you.
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Old 01-28-2008, 01:44 PM
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If your motors have the Mando alternators, you may spend more on upgrading them than just replacing them with another brand that already has a high output model, at least that's what my local alt guy told me. I went with Delco 100amp units and everything was fine. By the sound of the load you are putting on your batteries you may need more than that.
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Old 01-28-2008, 02:15 PM
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sock GM on my dooley is 130 amp, put the shields on them
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Old 01-28-2008, 06:44 PM
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A diesel truck alternator would help.

Possibly run one on each engine.
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