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CS144 Alternator Swap into 3rz

Discussion in '1st Gen. Tacomas (1995-2004)' started by wolfgang123, Jan 7, 2014.

  1. Jan 7, 2014 at 2:35 PM
    #1
    wolfgang123

    wolfgang123 [OP] Well-Known Member

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    So my alternator is beginning to go out on me, charges fine while driving until i put any kind of electrical load on it it beings to loose voltage and the truck starts to struggle.

    I have read about the GM CS144 swap in the 3.4l and i was wondering if anyone had information on a 3rz swap. Below is really the only helpful link i found, looking to see if anyone has more information before i begin this project.

    http://www.customtacos.com/forum/showthread.php?t=112540
     
  2. Jan 7, 2014 at 3:13 PM
    #2
    presto

    presto Well-Known Member

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    i tried to do research on the same thing and came up with a bunch of stuff for the v6's and nothing for the 2.7's... when i roll my windows up while idling my truck starts to vibrate little. when i keep holding the switch even after the window is up is when the vibration gets more intense.
     
    Stout890 likes this.
  3. Jan 8, 2014 at 4:56 PM
    #3
    wolfgang123

    wolfgang123 [OP] Well-Known Member

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    So i have discovered the GM alternator has a 6 rib pulley and Toyota only has 4. Can i get a belt that works with both? can the Toyota pulley fit on the GM alternator? (Some one with a 3.4l that has done the swap?)

    Also figure i would do the big three upgrade at the same time

    I will add a 120amp fuse

    ------

    Also while reading about a 3.4l swap i see only 2 wires (actually wires no listed) we used???

    EDIT: from custom tacos

    "The larger wire, closest to the BAT+ stud is the sense wire, it tells the voltage regulator what the voltage in the system is. Just solder on an eye connector and route back to the BAT+ stud.

    The other wire is the excite wire (what turns the alternator on). This is the 3rd wire in the harness (from the stud) and needs to have a 100 ohm 1/4 watt resistor put in it. This is because GM routed this wire through the charge light which put a fair amount of resistance on it. If you don't put this resistor in you will burn out the voltage regulator in short order."
     
    Last edited: Jan 8, 2014
  4. Sep 5, 2014 at 9:45 AM
    #4
    SnowroxKT

    SnowroxKT Well-Known Member

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    Did you guys go thru with this? I am looking at upgrading mine for a winch, did this work?
     
  5. Sep 5, 2014 at 10:23 AM
    #5
    presto

    presto Well-Known Member

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    I posted my post before i found Bamatoy's electrical system upgrade.

    http://www.tacomaworld.com/forum/ma...coming-2nd-gen-electrical-system-upgrade.html

    Stage 2 kit = upgraded alternator. He has a few different options i believe. 140 amps, 200 amps, 240 amps. Stock alternator puts out 70 amps i think?
     
  6. Sep 5, 2014 at 10:26 AM
    #6
    SnowroxKT

    SnowroxKT Well-Known Member

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  7. Sep 5, 2014 at 12:34 PM
    #7
    tan4x4

    tan4x4 Well-Known Member

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    I've read that the 3RZ alternators put out 70 amps for 95-99 models. Then it jumped to 80 amps for 2000 models
     
  8. Sep 5, 2014 at 12:57 PM
    #8
    SnowroxKT

    SnowroxKT Well-Known Member

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    Interesting because all that Napa shows for the 95 is 60 amps. Maybe that differs from factory though. :notsure:
     

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