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1st gen 105 amp bolt in alternator.

Discussion in '1st Gen. Tacomas (1995-2004)' started by chagovatoloco, Sep 21, 2019.

  1. Sep 25, 2019 at 3:25 PM
    #101
    1997tacomav6

    1997tacomav6 V6 5sp,RegCab,TVS1320 Supercharger,Haltech, 800k

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    Do you think you have to run another thicker ground strap wire from negative side of the battery to the frame or body?
    The positive battery to the alternator is a given it need a thicker wire.
     
  2. Sep 25, 2019 at 3:40 PM
    #102
    chagovatoloco

    chagovatoloco [OP] Active Member

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    Arb front bumper, EMU 883 front springs, Bilstein 5100, power stop front rotors, 105 amp alternator, KC underhood lights, 33" KO2 tires, KC LED daylighters.
    The ground wire from the battery to the engine is a 4 gauge and the alternator charge wire is a 10 gauge, so the ground should be good.
     
    1997tacomav6 likes this.
  3. Sep 25, 2019 at 4:11 PM
    #103
    0xDEADBEEF

    0xDEADBEEF Swaying to the Symphony of Destruction

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    I don't believe so. You can see the red wire on the left going to the alternator. The big fat one disappears, but it's too big for fuse box. You can also see a relatively little white wire on the side, that matches up with the white wire going to the fuse box on my truck.
     
    1997tacomav6[QUOTED] likes this.
  4. Sep 25, 2019 at 7:53 PM
    #104
    ThunderOne

    ThunderOne Well-Known Member

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    But why though? What's the point of that
     
  5. Sep 25, 2019 at 8:00 PM
    #105
    MattJakobs

    MattJakobs Everything but a Tacoma

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    Improve current capacity
     
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  6. Sep 25, 2019 at 8:05 PM
    #106
    0xDEADBEEF

    0xDEADBEEF Swaying to the Symphony of Destruction

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    Starters are the most current hungry device and so providing a nice fat path for that current will minimize voltage drop and allow the starter motor to have it's maximum torque. Probably not a big deal 99% of the time, but it might be nice on a cold day.
     
    1997tacomav6 likes this.
  7. Sep 25, 2019 at 8:26 PM
    #107
    1997tacomav6

    1997tacomav6 V6 5sp,RegCab,TVS1320 Supercharger,Haltech, 800k

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    Do you know what gauge the stock starter cable is that goes to the battery?

    Trying to find some new battery terminals where the wires go into the housing but they have various
    gauge sizes

    0199E013-B6C6-41B4-A433-B9605B9A4D7A.jpg
     
    Last edited: Sep 26, 2019
  8. Sep 25, 2019 at 8:50 PM
    #108
    00_5VZ

    00_5VZ Dumbest smart guy you’ll ever meet

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    This is a great upgrade to hear about. Definitely gonna have to save some money to do this
     
    chagovatoloco[OP] likes this.
  9. Sep 25, 2019 at 8:52 PM
    #109
    chagovatoloco

    chagovatoloco [OP] Active Member

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    I should be 4 gauge, that's pretty much OE for most vehicles.
     
    1997tacomav6[QUOTED] likes this.
  10. Sep 26, 2019 at 4:53 AM
    #110
    1997tacomav6

    1997tacomav6 V6 5sp,RegCab,TVS1320 Supercharger,Haltech, 800k

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    Perfect, I’m looking at the options for the 6 gauge cable and need to figure out what size ring terminal to get that attaches to the alternator in order for me to order the correct cable.

    Do you happen to remember what size the nut is on that alternator?
    7m=1/4,
    8mm=5/16,
    10mm=3/8”?
     
  11. Sep 26, 2019 at 6:58 AM
    #111
    chagovatoloco

    chagovatoloco [OP] Active Member

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    I used 1/4 and it was a good fit.
     
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  12. Sep 26, 2019 at 7:24 AM
    #112
    paetersen

    paetersen Well-Known Member

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    It's the windings. All the voltage regulator does is make sure you have 14.2 DC volts. It has nothing to do with rated amperage output. You can also take your stock alternator to an alternator repair shop and have them overwind it for higher amperage output.
     
    chagovatoloco[OP] likes this.
  13. Sep 26, 2019 at 9:21 AM
    #113
    ThunderOne

    ThunderOne Well-Known Member

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    I get that.. I just don't see what the point is. I can understand needing it for a higher output alternator, but the starter... well if it ain't broke don't fix it. Not like people are swapping the starter with a "high output" starter. Unless they have the cold weather package on their truck, in which case I do not know if Toyota even bothered to change the wire gauge for the cold-rated starter. 1.4Kw vs 1.8Kw or something like that.
     
    allenfab and chagovatoloco[OP] like this.
  14. Sep 26, 2019 at 9:26 AM
    #114
    0xDEADBEEF

    0xDEADBEEF Swaying to the Symphony of Destruction

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    Yeah, I agree. There are a ton of vehicle modifications that make no actual sense. At least this one has a plausible one, even if it's not useful to 99.99%
     
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  15. Sep 26, 2019 at 9:34 AM
    #115
    ThunderOne

    ThunderOne Well-Known Member

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    yeah, if what others are saying is true (the starter wire is 4 ga), then even a 2.0Kw starter is going to pull 166 amps, which is well within the boundaries of a 4 gauge wire.
     
  16. Sep 26, 2019 at 9:40 AM
    #116
    chagovatoloco

    chagovatoloco [OP] Active Member

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    I was looking at mine this morning, the ground is four gauge but the positive is a 2 gauge.
     
  17. Sep 26, 2019 at 9:42 AM
    #117
    ThunderOne

    ThunderOne Well-Known Member

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    Well heck, I won't be touching my starter wires then. I'll just do the alternator wires.
     
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  18. Sep 26, 2019 at 10:17 AM
    #118
    se7enine

    se7enine MCMLXXIX

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    The stock starter wire is plenty big enough and rarely needs upgrade. Comes directly from the battery + with no interference.
     
  19. Sep 26, 2019 at 10:20 AM
    #119
    Empty_Lord

    Empty_Lord Toyotaholic

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    Yea no need to mess with the starter wire unless you have issues
     
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  20. Sep 26, 2019 at 11:02 AM
    #120
    jammer

    jammer 2003 Toyota PreRunner 3.4L

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    OME Coils/Bilstein 5100's front / 5125's rear 105 Amp Denso Alternator
    Speaking from experience I agree with members Empty_Lord and Se7enine. Last year when doing the big three I used 4 Gauge AWG from the starter, directly to the battery. I piggybacked on the oem starter wire. My "thinking" was I would notice a faster start but I really can't tell a difference. When I say faster start, I mean as the starter spinning over faster. Again, I can't tell a difference.
     
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