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  1. 74M35A2

    Putting a HMMWV 400 AMP alternator on a Cummins NHC250. Has anyone done it? Need info

    Thanks, but not really. I just guess and then fool eveybody, it's more fun. Looking over your wish list, only 2 things come to mind: (1) How much power will you actually be utilizing from the 3500W inverter (continuous, not peak), and for what amount of average time? (2) This MRAPPER light...
  2. 74M35A2

    Putting a HMMWV 400 AMP alternator on a Cummins NHC250. Has anyone done it? Need info

    The niche alternator manufacturers are ok but sensitive to failing due to temperature of the electronics. If you are able to route outside air the the cooling air inlet of the alternator, it will drop the operating temp of the alternator by nearly 100F, as underhood air temps are typically...
  3. 74M35A2

    Putting a HMMWV 400 AMP alternator on a Cummins NHC250. Has anyone done it? Need info

    I measured the recharge current after start on my 925A2 with the stock 60A alternator. It was 6 amps max just after the engine fired, which then trickled down to near zero. This was recharging two new group 31 batteries in series. The 8.3L engine fires off almost instantly, especially in...
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