Alternator Conversion? - Team Camaro Tech
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post #1 of 12 (permalink) Old Oct 14th, 06, 08:43 AM Thread Starter
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Question Alternator Conversion?

I have done alot of reading in the archives and am almost ashamed to ask another alternator conversion question, but here goes.

I have a 69 with factory A/C, electronic ignition, and stereo. Will the 10SI alternator provide enough amperage for me?

The reason I ask about the 10SI is it seems the easiest conversion.
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post #2 of 12 (permalink) Old Oct 14th, 06, 01:09 PM Thread Starter
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Re: Alternator Conversion?

Another thing. My current alternator has a wiring position of 12 O'clock. Is this correct for a 69 350?
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post #3 of 12 (permalink) Old Oct 15th, 06, 08:18 PM
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Re: Alternator Conversion?

My answer would be - probably - it really depends on that stereo. The 10SI may struggle to keep everything going at idle. Personally, I'd go with a CS130. The effort is about the same and the conversion is well documented. You might have to fabricate an upper bracket and the lower bracket choice will depend on if you have accessory holes in the front of the heads (stock heads did not have accessory holes). In any event, you'll only have to do the conversion once so the effort kind of pays for itself in the long run.

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post #4 of 12 (permalink) Old Oct 15th, 06, 09:00 PM Thread Starter
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Re: Alternator Conversion?

I have found a 94 amp 12SI that should bolt right up. Shouldn't this be more than I need?

And yes I have stock heads.
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post #5 of 12 (permalink) Old Oct 16th, 06, 04:37 AM
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Re: Alternator Conversion?

As Dave suggested, a CS130 would be the hot lick, but the 94 amp 12SI will be a good second choice.

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post #6 of 12 (permalink) Old Oct 16th, 06, 03:30 PM Thread Starter
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Re: Alternator Conversion?

Well I called three alternator shops in my area today. All three said they had the CS130 and the 12SI.

They all said they could make either of these one wire if I wanted. Two of the three shops said the only real advantage in the CS130 as far as my application,was that it would excite at a lower RPM than the 12SI. But they kinda leaned toward the CS130, but said with no more amps than I wiill be running either would work fine.

The third shop said he wasn't as sold on the CS130 as alot of people due to the amount of heat they can generate.He went on to say he had seen alot of them melted & burned up. And that he could build a 100 amp 12SI that has a regulator that is excited by A/C voltage which allows it to excite at lower rpm's. He said it is used alot by people with tractors or equipment that need their alternator to excite at lower rpm's.

All three shops said they would sell me a rebuilt alt anyway I want it built for $50- $65 dollars depending on which way I go.
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post #7 of 12 (permalink) Old Oct 16th, 06, 03:36 PM
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Re: Alternator Conversion?

Before deciding on a 1 wire or 3 wire you should read this:
http://www.madelectrical.com/electri...hreewire.shtml

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post #8 of 12 (permalink) Old Oct 17th, 06, 07:22 AM
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Re: Alternator Conversion?

Stick with 3-wire hook-up.

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post #9 of 12 (permalink) Old Oct 17th, 06, 05:10 PM Thread Starter
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Re: Alternator Conversion?

I definitely want to stick with the three wire. I called one of the shops today and was going to have them go ahead and build me a 12SI 3 wire.
When I told the guy I wanted to stick with the three wire setup he said " the regulators I use will work as a one wire or 3 wire allowing your dash light to still work". He said you can wire it either way you want when you put it on your car.

Anyone know what he's talking about? I need to get my alternator this week but I don't want a one wire setup.
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post #10 of 12 (permalink) Old Oct 17th, 06, 06:56 PM
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Re: Alternator Conversion?

Did you check the mad electrical link posted above?

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post #11 of 12 (permalink) Old Oct 17th, 06, 08:12 PM Thread Starter
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Re: Alternator Conversion?

Quote:
Originally Posted by BonzoHansen View Post
Did you check the mad electrical link posted above?
Yes I read it. But I don't know what regulator this guy is using in the alt he offered to sell me.
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post #12 of 12 (permalink) Old Oct 18th, 06, 04:58 AM
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Re: Alternator Conversion?

Quote:
Originally Posted by ck 2 View Post
the regulators I use will work as a one wire or 3 wire allowing your dash light to still work". He said you can wire it either way you want when you put it on your car.
Wire the charging system for three wire. Take the car to the alt guy and show him the system, let him do a prognosis of it, write it down on your receipt of his findings.

This way you have it on record, he built it, you wired it up, he accepted the method, and/or made suggestions to improve, and now you have a warranty on the alternator from the vendor.

Search the Electrical Section for a wiring diagram or links to do it.

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