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Hino Alternator External Regulation Conversion

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    #16
    Picture of 2800 series, 160 amp Leece Neville's can be converted to external regulation easily as regulator is screwed to back of alternator (this one has data plate sticker on regulator ).

    All that's required is to bring 2 field leads out from regulator.Leads shown are powering regulator. Picture of typical J180, 6 diode 120-180 amp alternator.
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    Picture of 4800 series J180, 200 - 320 amp 12 diode alternator. 4800 series have combo brush holder and regulator regulator screwed onto top above rear terminals, to convert to external regulation remove 4 screws, pull regulator and replace with simple plate with 2 studs with terminals, 10 minute job. Note how extra diode pack is attached to back of alternator.
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    There are lots of variations of these LARGE CASE alternators... you will know one when you see one. Prestolite lists every alternator LN has made has lots of information including drawings and output graphs. But there web site is not user friendly. So lots of manual hunting.
    Don't rule out clones, It depends on build quality. There are quality clones built for ambulances, tow trucks or other high demand applications.
    Hino's have small J180 foot about 3 1/4 inches long.Most of these LN alternators have large J180 foot at 4 inches. Longer lower bolt and 3/16" shiming washers needed to line up pulleys.
    Don't over speed large case alternators... 6000 RPM is about it. Small case alternators can take 10,000 - 12,000 RPM.
    With Hino's the stock pulleys provide 2 to 1 ratio which is perfect. If converting gas engine your going to need under drive pulleys.
    Rod
    1991 4387
    Sidney, BC

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      #17
      Rody,

      thanks for the info. I greatly appreciate it.
      Ships n Giggles
      1993 Bayliner 4388
      MMSI# 367412710
      Day Island Yacht Club
      Commodore

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        #18
        Here are pictures of mock up of 4800 series on W06. Note the shims between J180 small foot and large foot on alternator. Only modification needed is upper belt tension arm to be brought forward 1 inch. Will make new arm to provide clearance for coolant hose. New arm will be in front alternator.
        This alternator is single wire, and does not need any part of Nippon Denso wiring. Have external 3 stage regulator that will be installed to complete winter project.
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        Rod
        1991 4387
        Sidney, BC

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          #19
          Looks awesome Roddy, great job man. Those look beautiful. I'll be getting on this shortly. I have to get a couple of other projects done on the boat. But at least I am going into the off season not worrying how much time I have to spend fixing everything before the spring. Right now most of my projects are either cosmetic or upgrades, most everything else is done.
          Ships n Giggles
          1993 Bayliner 4388
          MMSI# 367412710
          Day Island Yacht Club
          Commodore

          Comment


            #20
            Same with me... running Denso's until have time to complete over winter.
            Installing Leece Neville on port engine as there is lots room and perfect sight lines. Starboard only has about a foot between fuel tank and alternator.
            Electrically it looks straight forward to move starboard Denso alternator connections on Master Battery Panel, switches from house assignment to engine.
            Need to use a lot of 3/0 $$$. Will use garden hose to mock up alternator output and ground routing. Then get cables made up.
            ABYC requires 2 fuses, one at alternator and other at battery. Will use the new negative color option, yellow.
            Rod
            1991 4387
            Sidney, BC

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