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  •  » 3g alternator

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    7/11/2018 11:11 AM  #1

    mark1965
    FYI Addict

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    Registered: 4/03/2013
    Posts: 172

    3g alternator

    Is anyone running a 3G 130 amp alternator with a single V groove belt.  If so any issues with belt squealing  or anything else
    Thanks

     

    7/11/2018 11:59 AM  #2

    Alessandro
    I FYI 24-7

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    From: Modena -Italy
    Registered: 7/08/2016
    Posts: 707

    Re: 3g alternator

    Hi , yes i got it and i have some squeal here and there , maybe on start and hard kick down,  
    IF  you like me are using 3/8 belt  i think is only a question of tighten . Or maybe could be out of line .... the 130 amps  are a lot of force when alternator starts to do the job and i have heard that big alt. should wear double v groove pulleys just for that.
    if  your electric need  are stock the alt. will work easy adverse if you constant drag power for something 
    Whats happen ?

     

    7/11/2018 2:34 PM  #3

    Rudi
    Senior 24-7 FYI Addict

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    From: Stuck in the 50's Welland Ca
    Registered: 4/01/2013
    Posts: 3,774

    Re: 3g alternator

    On the rare occasion I get a small squeal at start up when the weather is cold.
     A new premium belt and max tightness should reduce the noise.

    Good work ain't cheap, Cheap work ain't good!   Simple Man
     

    7/11/2018 3:33 PM  #4

    Mochaman
    Senior 24-7 FYI Addict

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    From: Royse City, Texas
    Registered: 4/02/2013
    Posts: 1,422

    Re: 3g alternator

    I have this all the time. 

     

    7/11/2018 4:43 PM  #5

    TKOPerformance
    Hyper FYIFORD ADDICT

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    From: Newark, DE
    Registered: 12/15/2014
    Posts: 7,069

    Re: 3g alternator

    I had it with only the 95 amp version.  I tightened that belt as tight as I reasonably could and its 99.5% gone.  Every once in a blue moon it'll pop up again and momentarily make me mad, but it doesn't happen often enough to do anything about.  I'm planning a Fox front drive setup swap anyway, so I'm sure the future serpentine belt will fully solve it. 

     

    7/12/2018 9:20 AM  #6

    MS
    Forum Originator

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    From: Canyon Lake, Texas
    Registered: 1/24/2013
    Posts: 11,717

    Re: 3g alternator

    Maybe try the 4” diameter 289 Hipo alternator pulley. It has more surface area of engagement with the belt.
    On a 3G unit, you may have to file the front of the alternator slightly for clearance.

    Money you enjoy wasting is NOT wasted money... unless your wife finds out.
     

    7/12/2018 10:24 AM  #7

    Gaba
    Senior 24-7 FYI Addict

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    From: Van Alstyne Texas
    Registered: 1/15/2014
    Posts: 1,009

    Re: 3g alternator

    I have a 3G alternator from PA performance , and no squeal here either

    If it aint broke, I have'nt tried to "Fix" it yet!
     

    7/12/2018 6:07 PM  #8

    wsinsle
    Senior 24-7 FYI Addict

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    From: Belle Vernon, PA
    Registered: 4/01/2013
    Posts: 1,659

    Re: 3g alternator

    I have it all the time on start up. Maybe a larger pully with more area would as MS said would help. Where do I get one?

    If this forum can't fix it, it isn't broke.
     

    7/17/2018 2:20 PM  #9

    MS
    Forum Originator

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    From: Canyon Lake, Texas
    Registered: 1/24/2013
    Posts: 11,717

    Re: 3g alternator

    CJPony or other vendors should have the 289 Hipo or Boss 302 pulley. Be sure to get the steel version. The aluminum version does not last very long. The V groove quickly becomes widened out until the belt no longer engages.

    Money you enjoy wasting is NOT wasted money... unless your wife finds out.
     

    7/17/2018 2:45 PM  #10

    TKOPerformance
    Hyper FYIFORD ADDICT

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    From: Newark, DE
    Registered: 12/15/2014
    Posts: 7,069

    Re: 3g alternator

    Link to Mustangs Unlimited's listing for the HiPo pulley:

    http://www.mustangsunlimited.com/Mustang/Ignition-Electrical/Alternators-Related/Pulleys/AMK-Alternator-Pulley-HiPo-Boss-429SCJ-Zinc-1965-1973-Mustang.axd

     

    7/17/2018 2:45 PM  #11

    TKOPerformance
    Hyper FYIFORD ADDICT

    Offline

    From: Newark, DE
    Registered: 12/15/2014
    Posts: 7,069

    Re: 3g alternator

    Link to Mustangs Unlimited's listing for the HiPo pulley:

    http://www.mustangsunlimited.com/Mustang/Ignition-Electrical/Alternators-Related/Pulleys/AMK-Alternator-Pulley-HiPo-Boss-429SCJ-Zinc-1965-1973-Mustang.axd

     

     

     

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