Thread: High output alternator pulley siZe

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  1. #1 High output alternator pulley siZe 
    One BadAzz GT Dawgg Mirraco's Avatar
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    I bought a high output alternator the pulley on it is way smaller. Now can I just take my pulley off the oem one? How much would that drop the output that it's giving out. Or I can get a way smaller belt I tried one that's 3/8th inch smaller and it still was too big it has to be over a inch smaller pulley
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  2. #2 Re: High output alternator pulley siZe 
    GrandPrix Junkie CrazyGuy03's Avatar
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    If it's the $200 eBay "high output" I would return it.
    He uses the smaller pulley to mimic a high output at idle and cruise. Also the comments of other buyers show it's within stock ratings when they had it tested.
    If it's not the eBay one , the smaller pulley may only help at idle as well but the maker of the alternator can give you the specific output at specific rpm ranges.
    2003 Buick Regal GSX lots of mods - click here to see latest build - http://www.grandprixforums.net/threa...ld-for-the-gsx

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  3. #3 Re: High output alternator pulley siZe 
    One BadAzz GT Dawgg Mirraco's Avatar
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    Quote Originally Posted by crazyguy03 View Post
    If it's the $200 eBay "high output" I would return it.
    He uses the smaller pulley to mimic a high output at idle and cruise. Also the comments of other buyers show it's within stock ratings when they had it tested.
    If it's not the eBay one , the smaller pulley may only help at idle as well but the maker of the alternator can give you the specific output at specific rpm ranges.
    I bought it from the db website. Got it all hooked up with the oem pulley. Is it same rating with the oem pulley or did i lose alot of the amps? Its 220 amp one
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  4. #4 Re: High output alternator pulley siZe 
    GrandPrix Junkie CrazyGuy03's Avatar
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    It's output vs rpm You might not get full output at idle with a larger pulley. Got to ask the maker for a spec sheet
    2003 Buick Regal GSX lots of mods - click here to see latest build - http://www.grandprixforums.net/threa...ld-for-the-gsx

    *For Reference - Does not have a Zack Howard Cam - It's an Intense Stage 3 - Thank You*
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