2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

Alternator Upgrade - Do I need to modify anything else?

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Old Mar 22, 2009 | 01:03 PM
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From: lancaster pennsylvania
Alternator Upgrade - Do I need to modify anything else?

I am hoping to find a local aternator shop and have my alternator rewound for a higher amperage output. My question: with the higher output of the alternator, is there anything else I have to do to my electrical system? I imagine that the voltage regulator should keep any problems from occuring, but I'm not entirely sure. I should be able to just reinstall the alternator and that's it, right? Thanks
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Old Mar 22, 2009 | 01:22 PM
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I'm doing these for third gens. I can get them to go from the stock 90 amps to over 140 amps. I am pretty sure I can get a second gen one done too.
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Old Mar 22, 2009 | 01:26 PM
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https://www.rx7club.com/3rd-generation-rx-7-1993-2002-parts-99/fs-irp-high-output-alternators-820819/
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Old Mar 22, 2009 | 01:45 PM
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ok, thanks for the offer, I will keep you in mind if I cannot find a reputable service that is local. Also, do you have an answer to the original question, do I need to modify anything else to incorporate the higher output alt?
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Old Mar 22, 2009 | 04:07 PM
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No the voltage will still be controlled by the internal regulator. This is especially helpful if you run an underdrive pulley, high end stereo, or a lot of aftermarket electronics.I'd be happy to do one for you. Mine are tried and tested.
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Old Mar 22, 2009 | 04:32 PM
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I just took my alternator to the auto store to get tested and it failed. They are giving me a replacement for free since the old one was under warrenty. But if I am still not happy with the output of the replacement then I'll look back into a rewind, thanks.
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Old Mar 22, 2009 | 05:57 PM
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I have a local shop that has upgraded two FC alternators for me to 130amp. It didn't require any other modifications.
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