How-To: Installing a 2005 Nissan Titan 150 amp Alternator


  • How-To: Installing a 2005 Nissan Titan 150 amp Alternator

    So we all know that we can do a bolt-on upgrade to the 90amp Maxima alternator, which is a great bump up from the stock 70amp alternator.

    But if you have done some upgrades such as dual radiator e-fans, aftermarket sound system, etc.. you might need more than just the 90amp.

    Mind you that the 90amp rating is generally at its peak RPM, which is around 5000 rpms. The common drive range is 2-4000.

    There are a few other choices for alternators as well;
    SATAN and a few others have ran the 2003 Nissan 350Z 110amp alternator (almost a direct bolt in)
    I have ran the 1999 Nissan Maxima 125 alternator (requires some modification)
    I am sure there are other ones as well.
    And a GM 160 amp (mind you, not Nissan)

    Well, my 99 Maxima alternator was going out and I knew I had a life time warranty on it with Napa.
    So I decided to research other alternatives.
    I found that the 2005 Nissan Titan alternator has the highest output of 150amp and requires very little modifications to install it.
    Its kinda spendy though, but its well worth it. Especially if you get one that has a life time warranty on it.
    The total was around $285.


    The alternator as it sits. Its pretty beefy.


    The documentation that it came with. Notice that amps by RPM specs. Looks good!!


    Stock z31 plug. You may need to put a bigger i-crimp on it.



    I made this harness for the ground for the alternator to be a quick unplug.


    Notice the pulley has more ribs. Thats okay. You don't need to get a wider belt. The belt I am using is the stock z31 alternator belt.


    This is the only modification you need to do (unless you get a different alternator bracket).
    This bracket I made is simply an extension for the adjuster. The alternator bracket is the stock z31 one.


    All bolted in. It bolts up tight and works great!

  • #2
    Re: How-To: Installing a 2005 Nissan Titan 150 amp Alternato

    what if that extension you made rattles loose collapses or is there a way to secure it good? Great find though i will probably do this to my 86na when i convert it to the passenger side.
    86 NA
    87 Turbo
    Member of the "zetto sun-ichi" group


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  • #3
    Re: How-To: Installing a 2005 Nissan Titan 150 amp Alternato

    Why would that happen? Bolts have lock washers and the spades fit tightly together. Other than the spade its nearly a stock setup.
    Hmmm, Whats next?
    Full Size Bronco, smashing shit.

    84ZXT

  • #4
    Re: How-To: Installing a 2005 Nissan Titan 150 amp Alternato

    I think he meant the extension for the adjustment bracet. I think as long as the alternator end of the extension is tight up against the alt casing it shouldn't move or collapse.

    1986 300ZX Turbo…sold
    1990 Skyline GT-R…new money pit
    2014 Juke Nismo RS 6-speed…daily

  • #5
    Re: How-To: Installing a 2005 Nissan Titan 150 amp Alternato

    yeah i was referring to what nissanegg said.
    86 NA
    87 Turbo
    Member of the "zetto sun-ichi" group


    Local MN car forum/club anyone welcome..... fivezeroseven.net join!

  • #6
    Re: How-To: Installing a 2005 Nissan Titan 150 amp Alternato

    so if you're making the adjustment bracket leave a bit of metal on both sides so you can heat and bend so that it braces the sides of the adjustment ear, like so:



    they dont have to even be that long. just little tabs like you see on banjo bolts for brake caliper lines.

  • #7
    Re: How-To: Installing a 2005 Nissan Titan 150 amp Alternato

    nice find on the alternator too :-)

  • #8
    Re: How-To: Installing a 2005 Nissan Titan 150 amp Alternato

    Good find, when mine dies I'll look at doing this
    Originally posted by TearingRaven
    Honestly, if you have to ask this question and common sense does not kick in immediately, you need to be riding the bus. Preferably while wearing a helmet.

  • #9
    Re: How-To: Installing a 2005 Nissan Titan 150 amp Alternato

    Rat1314 wrote: Good find, when mine dies I'll look at doing this
    +1

    Silver 86T 3" turbo back Cm exhaust ST Springs / Tokiko Blues
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  • #10
    Re: How-To: Installing a 2005 Nissan Titan 150 amp Alternato

    So far so good! No problems.

    The extension bracket I made is just a strip of 1/8" steel with two holes for the bolts.
    I used locking washers.

    If done right, I guarantee that it will not come loose.

  • #11
    Re: How-To: Installing a 2005 Nissan Titan 150 amp Alternato

    edicer2 wrote: what if that extension you made rattles loose collapses or is there a way to secure it good? Great find though i will probably do this to my 86na when i convert it to the passenger side.
    For the 86 n/a, you will need to change the pulley to the "V" belt type.
    "zetto sun-ichi" group"

  • #12
    Re: How-To: Installing a 2005 Nissan Titan 150 amp Alternato

    [quote]tnokes9 wrote:
    Originally posted by edicer2
    what if that extension you made rattles loose collapses or is there a way to secure it good? Great find though i will probably do this to my 86na when i convert it to the passenger side.
    For the 86 n/a, you will need to change the pulley to the "V" belt type.
    can i swap a pulley that has 1 ribbed and 2 v? I also want to swap it to the passenger side so when i want to turbo it. I think i still have my brackets i bought from someone.
    86 NA
    87 Turbo
    Member of the "zetto sun-ichi" group


    Local MN car forum/club anyone welcome..... fivezeroseven.net join!

  • #13
    Re: How-To: Installing a 2005 Nissan Titan 150 amp Alternato

    [quote]edicer2 wrote: [quote=tnokes9]
    Originally posted by edicer2
    what if that extension you made rattles loose collapses or is there a way to secure it good? Great find though i will probably do this to my 86na when i convert it to the passenger side.
    For the 86 n/a, you will need to change the pulley to the "V" belt type.

    can i swap a pulley that has 1 ribbed and 2 v? I also want to swap it to the passenger side so when i want to turbo it. I think i still have my brackets i bought from someone.
    With the V belt type pulleys you will need to change something for it to work.
    You can take off the stock z31 pulley from the alternator, bore it out and you should be good.

    It might be easier to just swap to the turbo crank pulley that has the 1 ribbed and 2 v's and grab the waterpump ribbed pulley as well.

  • #14
    Re: How-To: Installing a 2005 Nissan Titan 150 amp Alternato

    holy macaroni 150A!

  • #15
    Re: How-To: Installing a 2005 Nissan Titan 150 amp Alternato

    [attachment=1:2szn19xb]IMAG0234-1-1.jpg[/attachment:2szn19xb]
    [attachment=0:2szn19xb]IMAG0233-1.jpg[/attachment:2szn19xb]

    I used the pully off my old maxima 90 amp small spacer used behind the pully. Install was a breeze