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Old 04-12-2010, 05:03 PM   #1
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Default NA to NB alternator differences?

Does anyone know the differences between a 94-97 alternator and a 01-05 alternator? I ask this because my battery got overcharged and imploded, trying to figure out what caused that.

Im using an 01 block in my 97 with a 99-00 head, I kept the 01 alternator on the block because it had lower mileage than my alternator off my 97 block.

I know the plugs are the same and the position on the ground as well, but Im wondering if the regulator is different in anyway? I didn't think it would be because NB's use similiar batteries as an NA.
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Old 04-12-2010, 05:06 PM   #2
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The NB alternator needs an external voltage regulator to charge properly. You will want to stay with an NA alternator, or build a voltage regulation circuit like what we show with the DIYPNPs.

Any chance of getting pics?
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Old 04-12-2010, 05:08 PM   #3
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Well ****, theres my problem.

I wonder how much damg I did to the rest of my electricals when it imploded :(

Ill go take a couple of pics, lol.
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Old 04-12-2010, 05:29 PM   #4
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The battery I was using is a XS power s680, its about 10lbs lighter than the lawnmower batteries we usually use.



Here it is in the trunk:
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And out:
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The way this happened was.....

I just got the car running the day before, ran fine but the battery couldnt hold a charge if I left the car off for an hr +. Go to a friends house and Im smelling hardcore sulfur, I figure maybe its my diff leaking a little and burning. Well on the way home, the smell comes back hardcore.... the windshield wipers go to max speed, alt belt starts squealing, engine acts normal, speakers pop, I smell burning electrical ****, then I hear a loud BANG POP, car dies. I pop the trunk and see that the battery is smoking and has imploded



Leason learned, don't put a NB alternator in a NA
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Old 04-12-2010, 10:10 PM   #5
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No affiliation but check the FS section you may find something you may need.

Have a great day,
Jared
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Old 04-12-2010, 10:31 PM   #6
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Yea I did the opposite as you I tried running a NA alternator in a NB and it wouldn't work because the I had 2 voltage regulators working against each other.
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Old 04-12-2010, 11:36 PM   #7
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Quote:
Originally Posted by Jfornachon View Post
No affiliation but check the FS section you may find something you may need.

Have a great day,
Jared
Oh yeah I saw it, I've got two extra NA alternators, thx tho!
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