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Factory Denso 180 Amp Alternator upgrade

Discussion in '3rd Gen. Tacomas (2016-2023)' started by Jowett, Mar 14, 2019.

  1. Mar 16, 2019 at 11:15 AM
    #21
    05Taco4x4

    05Taco4x4 ToyotaHubs

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    :popcorn: how'd she work?
     
  2. Mar 16, 2019 at 11:37 AM
    #22
    svdude

    svdude Well-Known Member

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    Why wouldn't it charge the battery faster? More amps means a higher flow of electrons to the battery, is there a regulator between the alternator and battery that limits over frequency (high current)?
     
  3. Mar 16, 2019 at 11:45 AM
    #23
    OMGitsme

    OMGitsme Well-Known Member

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    I can think of 68 mods I do before this one but if you really need it I guess it bumps it up the list.
     
    Joe23 likes this.
  4. Mar 16, 2019 at 11:52 AM
    #24
    TireFire

    TireFire Superunknown Member

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    Is the 3rd gen towing package 130amp alternator the same as the second gen towing package 130amp one?
     
  5. Mar 16, 2019 at 11:59 AM
    #25
    svdude

    svdude Well-Known Member

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    But voltage isn't the only factor. Amperage is the basically the rate at which the volts flow (Coulomb's/seconds). Since there is a higher amperage the 14.8(ish) volts are moving faster to the battery.
     
  6. Mar 16, 2019 at 12:04 PM
    #26
    TireFire

    TireFire Superunknown Member

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    True for 2nd gens but they downsized the battery to 24f in 3rd gens. Even those w towing package
     
    shakerhood likes this.
  7. Mar 16, 2019 at 12:12 PM
    #27
    SC4333

    SC4333 Well-Known Member

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    I had not one but (2) Mean Green alternators fail on my Jeep in a matter of 3 years. Wont make that mistake again!
     
  8. Mar 16, 2019 at 12:46 PM
    #28
    TireFire

    TireFire Superunknown Member

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    Another thing to keep in mind is that max alternator output isn’t as important as what it can put out at idle and cruising speed.
     
    Joe23 and BigWhiteTRD like this.
  9. Mar 16, 2019 at 12:51 PM
    #29
    Grossomotto

    Grossomotto Complete 3rd Member

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    So the OEM voltage regulates it to max 14.4V? This has been a big question whether the stock alternator will fully charge an AGM battery to 14.8V.

    Whichever the case, I’ve been putting my AGM on a 7 cycle 14.8V charger every few weeks.

     
    Last edited: Mar 16, 2019
  10. Mar 16, 2019 at 1:08 PM
    #30
    TireFire

    TireFire Superunknown Member

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    I do the same. Someone mentioned in here a mod to change a diode to increase voltage. Curious about that... @moe2o4 was that you?
     
  11. Mar 16, 2019 at 1:08 PM
    #31
    TireFire

    TireFire Superunknown Member

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    Sorry quotes wrong guy above @Joe23
     
  12. Mar 16, 2019 at 1:08 PM
    #32
    Flash1034

    Flash1034 Well-Known Member

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    How does one set the alternator to charge an agm battery?
     
  13. Mar 16, 2019 at 1:25 PM
    #33
    r1200gs4ok

    r1200gs4ok Well-Known Member

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    so if I understand, if i go from a flooded lead-acid battery to AGM battery, I need to change a setting on my voltage regulator......if so, how would i do that?
     
  14. Mar 16, 2019 at 1:28 PM
    #34
    PB FAB

    PB FAB Well-Known Member

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    I remember Mat @OVTune saying he could adjusts the alternator output in the ecu.
     
    uploadadventure likes this.
  15. Mar 16, 2019 at 1:40 PM
    #35
    r1200gs4ok

    r1200gs4ok Well-Known Member

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    thanks.....from the discussions, it sounded like you knew what you were talking about for the Tacoma since this is a truck forum....not a boat forum.....thanks anyway ....i was just confused
     
  16. Mar 16, 2019 at 2:21 PM
    #36
    svdude

    svdude Well-Known Member

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    I just did a little reading on car batteries. Basically what I got was that a car battery is a high output battery so in return it's also a high input, meaning it can also charge with a higher current which will charge it faster. If what I'm understanding is correct, then why won't a higher amperage alternator charge a battery faster? A higher rate of electron flow will fill the battery faster.
     
  17. Mar 16, 2019 at 3:00 PM
    #37
    Jowett

    Jowett [OP] Well-Known Member

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    The battery can only intake so many charging amps. It is a percentage of the batteries amp hours and level of charge.
     
  18. Mar 16, 2019 at 3:17 PM
    #38
    Joe23

    Joe23 Canuckistikian

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    Ya that was me .I bought it when I did dual battery as one of my friends has it . But turns out 3rd Gen doesn't have that same fuse so it doesn't work on 3rd Gen
    It was this
    https://www.hkbelect.com

    And then there was a thread somewhere on here that transferred over from a tuner forum for sounds systems was for a new harness for the alternator that did the same thing.
    But again 3rd Gen has something else and it doesn't work.


    For what it's worth its only in the summer I only get 13.7V
    And I have two North Star group 27. Haven't had any issues . And I have a ctek charger I hook up if I really need it .But haven't yet.
    I just plugged in to the second battery when I was at my girlfriend's trailer for a long weekend and needed extra fridge space.
    So I had my arb and just plugged in since I knew the truck wouldn't really be getting started for 4 days.

    I'm yet to have either battery go flat on me.
     
  19. Mar 16, 2019 at 3:18 PM
    #39
    Joe23

    Joe23 Canuckistikian

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    Depends on the type of battery.
    And a slow charge is actually better for batteries health
     
  20. Mar 22, 2019 at 3:47 PM
    #40
    Jowett

    Jowett [OP] Well-Known Member

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    No, the Land Cruiser uses a different 4 pin connector, and mounts to the block in a totally different fashion. The rectifier on the LC unit also appears to have vastly more cooling capacity. Has me wondering what else may be different/better.

    IMG_2560.jpg
     
    mcharfauros likes this.

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