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Old 08-22-2014, 12:56 PM   #9 (permalink)
BobS
diesel doer
 
Join Date: Oct 2013
Location: Gainesville, FL
Posts: 46
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jray3, looking at your setup, two solutions come to mind:
1. Using the old-school diesel setup, it is easy to separate the starter circuit from the circuit feeding the other systems in the car. If you permanently hook the system circuit wire across one battery, hook the batteries in series and hook only the starter circuit (or whatever circuits you want) across both batteries, you will have what you have said you want. But you must charge each battery separately, charge one one night and the other the next. That way you only need one standard charger if you use 12V batteries and, hopefully, no alternator will be needed unless you have a long commute.
2, Separate the starter wire from the wire to the rest of the systems. Run the 16V to the starter and run the other wire thru 4 silicone power diodes (with heatsink, preferably in front of the radiator) to get a 2.4V drop. You would be upping the voltage about 3V to 17.1V max on your lights, fuel pump, etc. so you should get better performance but shorter life for those components. Then you can run an alternator or not, your choice.
Bob
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