Nation's Auto Electric Alternator Review - Modular Fords

  • Nation's Auto Electric Alternator Review

    For those who dont want to read.....it works.....amazing.

    Ive had my Cobra a few years but seldom use it. It has a Whipple 2.9/TH400/Gear Vendors
    The first dyno I had done the voltage dropped off below 12. Went and bought a NAPA unit and same ****.
    Parked the car for a while then installed the auto, and now I believe I have come up with the ultimate solution for every Cobra owner on the planet.
    I knew what I wanted, and how it needed to be designed, and was lucky enough to find Adam at Nations after reading this thread:
    https://www.modularfords.com/f17/lost...passes-177604/

    I know for a fact that the regulators are the problem in the alternator. They have an overtemp built into them and basically stop producing volts when the temp gets high. I tried the bigger pulley, cooling duct, etc. Nothing worked. Im also convinced the stock unit is not sufficient when you have 3 fuel pumps, trans cooler, yada yada yada. In stock form, maybe.

    I knew that externally regulating the voltage would be the necessary fix, but self-researching gave me no difinitive solution....this is where Adam steps in.
    I explained all of the problems Cobra owners have, and told him it has to have some more amperage and be externally regulated. Well, after a few days of thinking and a few days building, he shipped me this:





    Next to Stock::





    You are looking at a Nippendenso based unit. The front derives from an ambulance, and the rear comes from a Chrysler.
    Adam needed to use the Chrysler rear because that is the only style that can have a 'dummy' regulator installed in it.
    He also found me an OE 3.3" Pulley for it.
    He made the wire loom and supplied all connectors and instructions how to hook up the regulator. As shipped, its set to make 14.2 volts (and I verified that) I set it to 14.6.

    Before I get to the test drive, you will have to make a simple bracket to secure the bottom mount, and its actually about 1/2" shorter than stock: (hole spacing is 1.625")




    Here is a top pic. (Adam supplied the correct spacers to correctly position the alternator, since the top leg is much shorter)
    The fololwing pic is not the final configuration. I made my own spacers thinking Adams measurements were off but in fact his were dead on.



    Now the good stuff....start up.

    I **** you not I put a volt meter on it and it never budged from 14.6....not even when I revved it 4k+
    Went out (86 degrees out) and drove it hard for about 20 minutes. IAT's got in the 150's, just to tell you how hot it was in the engine bay. Battery voltage was rock solid at 14.6, but the Aeroforce read 14.0-14.2

    Here is where the dats gets interesting:
    I had a meter on the battery I was monitoring. It never moved more than .1 volts no matter what the rpm.
    The Aeroforce gauge however went to 13.6 on one WOT pull at 6k+ rpm's. AND this was with the headlights, fogs and AC on full blast!
    The alternator works, and it works well. I wish I had weeks of testing to provide you, but I dont.
    I do know that if i had a stocker on it, at those temps, the voltage would have dropped to 12.0 or lower on the Aeroforce.

    In reference to the Aeroforce reading lower than the actual voltage measured at the battery, it makes me start to question the factory wiring as being a problem. (FYI my 3 pumps are run off a 6ga wire directly to the battery. I can rest easy knowing the pumps are getting full voltage.)
    Since the majority of voltage problems happen at high RPM's, it makes me wonder if the Coil pack wiring is causing the MAJOR draw on the system???? Since they are activated with a negative pulse from the PCM, I am curious to see the results of wiring the coil packs off a heavy gauge wire and activated with a relay for each bank when they key is turned to ON. Id bet that would solve a lot of issues.

    The alternator cost me $475, but I can finally put this problem to bed...for good.
    Oh, almost forgot: You will actually need a LONGER belt when you install this.

    I have a feeling Adam is gonna be a busy man come Monday, LOL
    Nation Starter & Alternator,Tractor Auto,Marine,Truck,Small Engine
    1-888-334-2632

    I sure hope this helps others, as that was one of my original intents being the guniea pig.
    This article was originally published in forum thread: Nation's Auto Electric Alternator Review started by WantedDOA View original post
    Comments 132 Comments
    1. Screamn03's Avatar
      Screamn03 -
      Cool stuff! Interested in the long term results but it seems you're on the right track. Are there any options for other sized pulleys? What kind of max RPM can this unit handle? $475 is hard to swallow at first but then again for those guys eating alternators constantly this would pay off in the long run.
    1. WantedDOA's Avatar
      WantedDOA -
      Quote Originally Posted by Screamn03 View Post
      Cool stuff! Interested in the long term results but it seems you're on the right track. Are there any options for other sized pulleys? What kind of max RPM can this unit handle? $475 is hard to swallow at first but then again for those guys eating alternators constantly this would pay off in the long run.
      I think he looked and found me the largest available pulley. I was going to remove it and see if the Metco pulley could be adapted, but decided to run it as is.

      There are many different opinions on alternator rpm's. Some say spin them less, some say spin them faster so the internal fans cool them better.
      RPM's doesnt make the majority of heat, AMPERAGE does! (and the hot ass engine bay)
    1. FULLBLOWN03's Avatar
      FULLBLOWN03 -
      Good stuff man!!! Glad Adam got something working for you. I was killing the 4g alt's left and right spinning my motor to 7500rpm's. I put a cobra R 4" saucer pulley on my last unit and it had lasted the longest but voltage still sucked. Called Adam and he hooked me up with the denso unit. With it's smaller 2.2 pulley he said don't worry about so I have been spinning it to 7500rpm's for the last 9 months no problems.
    1. showme cobra's Avatar
      showme cobra -
      Quote Originally Posted by FULLBLOWN03 View Post
      Good stuff man!!! Glad Adam got something working for you. I was killing the 4g alt's left and right spinning my motor to 7500rpm's. I put a cobra R 4" saucer pulley on my last unit and it had lasted the longest but voltage still sucked. Called Adam and he hooked me up with the denso unit. With it's smaller 2.2 pulley he said don't worry about so I have been spinning it to 7500rpm's for the last 9 months no problems.
      you are so badass tim!!!!
    1. oldmodman's Avatar
      oldmodman -
      Where did you mount the regulator?
    1. WantedDOA's Avatar
      WantedDOA -
      Quote Originally Posted by oldmodman View Post
      Where did you mount the regulator?
      Its just sitting near the hydroboost right now.
      I have to permanently mount it in the future, just didnt feel like doing it today.
    1. showme cobra's Avatar
      showme cobra -
      very nice
    1. Black306's Avatar
      Black306 -
      How about reusing a stock alternator with the aftermarket regulator? Did Adam mention anything about that?
    1. FOURCED's Avatar
      FOURCED -
      Quote Originally Posted by Black306 View Post
      How about reusing a stock alternator with the aftermarket regulator? Did Adam mention anything about that?
      I was kinda wondering that as well... it may not have the adjustable regulator but it should be better than what some of us out there have ended up with.

      The new unit is nice... but honestly for close to 500 bucks I'd expect it to be a straight bolt-in.



      Shannon
    1. broke7's Avatar
      broke7 -
      Callin monday....thanks for the writeup. I like how you did the real world test with the driving. Alot of the time people think if its good when the car is cold/not heatsoaked they have a winnner. My car will test good when its cool/not soaked then it goes to hell.

      Awesome info again!!!!!!! Thanks to Timmy and you for doing the legwork.
    1. WantedDOA's Avatar
      WantedDOA -
      Quote Originally Posted by Black306 View Post
      How about reusing a stock alternator with the aftermarket regulator? Did Adam mention anything about that?
      Not sure if I mentioned it in the original post, but there is no Dummy Regulator Available for the Forg 6G Alternator.

      So the answer is no, the stocker can not be modified to be externally regulated.
    1. WantedDOA's Avatar
      WantedDOA -
      Quote Originally Posted by FOURCED View Post
      I was kinda wondering that as well... it may not have the adjustable regulator but it should be better than what some of us out there have ended up with.

      The new unit is nice... but honestly for close to 500 bucks I'd expect it to be a straight bolt-in.




      Shannon
      I spent a total of 6 hours installing it, taking pics, wiring etc.
      Not sure if you caught it, but I even told you the bolt spacing of the bracket that needs to be made.

      I would think after 8 years of Voltage problems and me handing you the solution, a few hours of fab work would be the last concern.

      LOL, but thats the internet.
    1. FOURCED's Avatar
      FOURCED -
      Quote Originally Posted by WantedDOA View Post
      I spent a total of 6 hours installing it, taking pics, wiring etc.Not sure if you caught it, but I even told you the bolt spacing of the bracket that needs to be made.I would think after 8 years of Voltage problems and me handing you the solution, a few hours of fab work would be the last concern.LOL, but thats the internet.
      You handed me a solution huh? Bubba I hate to tell you but I'm still on the stock alternator nearly 8 years and 54,000 miles later. The bearings were squeaking in it last year, and so I took it to a local alternator/starter rebuilder and had them replace the bearings and to fix anything else wrong with it. When I picked it up I asked them if anything else was wrong with it and he said the internals were fine. There have been two times since then voltage has dropped to 12.6ish at WOT but it was for a split second and it came right back up to the low 13's... that was at the top of the RPM range as well. I applaud you for your efforts... I'm sorry if it bothers you that I think it should fit better for the money spent. I'm used to having to modify and fabricate things on my car and I assure you I can more than handle making something like that work if the need arises. Shannon
    1. WantedDOA's Avatar
      WantedDOA -
      Shannon, my post to you was not meant to be derogatory, and Im certainly glad your alternator has not given you trouble.

      The last thing I want to happen in this thread is people arguing over the price or complaining about the 'install'

      Carry on.
    1. BLK_03's Avatar
      BLK_03 -
      I thinks it's cool as long as 'ol boy warranties the **** out of it for that price.
    1. lemosley01's Avatar
      lemosley01 -
      WantedDOA - if you're looking for steady voltage, then this would indeed appear to be a solution. Many of us don't drag race, however, and low voltage situations are not what many of us are concerned about; that the alternator will be reliable and not leave us stranded someplace is paramount.


      I'm interested in the results of you abusing this thing - if it can withstand the beating, then it should be pretty fine for street use. I'm of the opinion that an externally regulated alternator will likely solve many of the problems.
    1. lemosley01's Avatar
      lemosley01 -
      BLK_03 covered and it is what I forgot to ask - what is the warranty on this?
    1. WantedDOA's Avatar
      WantedDOA -
      Quote Originally Posted by lemosley01 View Post
      BLK_03 covered and it is what I forgot to ask - what is the warranty on this?
      Ill call and ask Monday.
    1. 4vMn12's Avatar
      4vMn12 -
      not sure if you drive year round, and use both on street strip, but I'd be curious to see an update after several months of usage, i.e 3-4 months, and then again in 6-8 months of street strip abuse. Alot of alternators work good out of the box, but many do not seem to stand the test of time / abuse.

      If I needed the alternator right now I'd give it a shot myself, as it turns out I won't need one for several months, I hope your results are good by the time I need one!!!

      Thanks for the write-up!
    1. showme cobra's Avatar
      showme cobra -
      great info and as said how long will it last?-i hope for a long time. a 500.00 dollar alt is much cheaper than a new short/long block
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