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Old 06-17-2010, 09:40 PM
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8 Volt battery

Just purchased an 8vt battery for 6vt system in my 54 Lincoln. Engine is a 317 and generator puts out 7.1 volts with current battery. I have many concerns however cranking has really been an issue with 6 volt optima battery. Will I have a problem charging the battery when in use?

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Old 06-17-2010, 10:58 PM
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i would think a 6 volt generator should put out closer to 8 volts anyways
i assume so since a 12 volt alternator system puts out closer to 14 volts amd sometimes evne closer to 15 volts, such as the 2000 ford taurus alt on my 91 s-10 pickup

i dont see how it can hurt anything. and could only help it

unless someone else knows more/different?

im curious..
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Old 06-17-2010, 11:37 PM
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adjust the V reg springs

I still have my text book from 1961. " To increase the voltage first warm up the system for 15 minutes with the cover on the regulator. then remove the cover to make the adjustments. the voltage control coil is made using fine wiring, normally the end coil-and points. Usually autolite regulators have 2 springs. first bend the lower spring bracket down to increase spring tension. adjust the weaker spring first. check the voltage with a good accurate meter. The text also recoments listening to the points with a 2000 ohm set of headphones connected between the F terminal and ground. you should hear a clear buzzing with no missing tones.or irregularities. " you should adjust the Gen output about 1 volt above the battery voltage ...you need to check the specific gravity of the battery as it is charging . a fully charged battery will have a specific gravity of 1.280. if the generator won't bring it up that high re adjust the voltage control springs. too high a setting will boil out the water. The higher voltage might alter the readings of the gages. and might shorten bulb life. but you should see better at night.
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Old 06-17-2010, 11:51 PM
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A word of caution...If you have a tube radio, the extra voltage can toast it.
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Old 06-18-2010, 01:28 AM
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I'd try rebuilding the starter first.. probably burned contacts.. happens on the old 6v's due to to the higher amperage
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Old 06-18-2010, 10:18 PM
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good point about tubes, never thought of that one hmmmm good call!
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Old 06-18-2010, 11:27 PM
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Quote:
Just purchased an 8vt battery for 6vt system in my 54 Lincoln. Engine is a 317 and generator puts out 7.1 volts with current battery. I have many concerns however cranking has really been an issue with 6 volt optima battery. Will I have a problem charging the battery when in use?
In essence, yes you would. The lower charging voltage would never bring the battery to the full charge point. This constant slightly discharged rate will lead to a sulfated battery. Batteries sulfate during the chemical reaction when the electrons are released from the battery(discharging the battery). The charging system reverses this process and turns the sulfated plates back into oxides.

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...you need to check the specific gravity of the battery as it is charging . a fully charged battery will have a specific gravity of 1.280.
This is important. But, you need to know what type of battery that you have in order to determine the charging system and what specific density you should have. Also, if it is an AGM you can't do this

Check out this website. It is about 12 volt batteries but the principles still apply. http://www.landiss.com/battery.htm
Good Luck
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