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Joined: Dec 2005
Posts: 13
Grease Monkey
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Grease Monkey
Joined: Dec 2005
Posts: 13 |
I just installed an 8 volt Battery in my 41 coupe, it did what i wanted brighter lights,starts when engine is hot, the problem is the voltage regulator chatters, it has an adjustment knob that know one around here has seen, On my test outing the battery tested at 9.3 volts and the amp meter in the car discharged all the time, at the end it read 8.3 volts at the battery, Has anyone tried this or have a solution? Jim
my41
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Joined: Nov 2001
Posts: 29,863
Tech Advisor ChatMaster - 25,000
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Tech Advisor ChatMaster - 25,000
Joined: Nov 2001
Posts: 29,863 |
Putting an 8-volt battery on a six-volt system is not recommended by most old car dudes because of the problems the 8-volt battery creates. I have only known one fellow that did install an 8-volt battery (he has a 1937 coupe) and he removed it shortly thereafter because of all of the problems the 8-volt battery created. If you have a six-volt system that is up to snuff with good wiring, the correct size positive battery cable, a quality rebuilt starter with the correct field coils, and a high CCA battery, six-volts will work just fine. 
The Mangy Old Mutt
"If It's Not Junk.....It's Not Treasure!"
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Joined: Dec 2001
Posts: 10,379 Likes: 1
Technical Advisor ChatMaster - 10,000
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Technical Advisor ChatMaster - 10,000
Joined: Dec 2001
Posts: 10,379 Likes: 1 |
My sentiments exactly. Have never seen a valid reason to install an 8-volt battery. The money wasted on the 8-volt would probably be much better used for a "tune-up" on the original system. You might do a search and find our opinions are shared. 8-VOLT BATTERY @#$%& DON'T GO THERE. 
RAY Chevradioman http://www.vccacolumbiariverregion.org/1925 Superior K Roadster 1928 Convertible, Sport, Cabriolet 1933 Eagle, Coupe 1941 Master Deluxe 5-Passenger Coupe 1950 Styleline Deluxe 4-Door Sedan 1950 Styleline Deluxe Convertible 2002 Pontiac, Montana, Passenger Van 2014 Impala, 4-Door Sedan, White Diamond, LTZ 2017 Silverado, Double Cab, Z71, 4X4, White, Standard Bed, LTZ If you need a shoulder to cry on, pull off to the side of the road. Death is the number 1 killer in the world.
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Joined: Apr 2004
Posts: 191
Shade Tree Mechanic
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Shade Tree Mechanic
Joined: Apr 2004
Posts: 191 |
My 1940 had an 8 volt battery in it when I got it, I removed and replaced with a 6 volt, had to do a complete connection check, including spark plug wire replacement and the coil wire replacment from the ignition, it now starts great even when it's hot. I love it.............
whmarquis
six volts forever
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Joined: Jan 2002
Posts: 30,701 Likes: 141
ChatMaster - 25,000
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ChatMaster - 25,000
Joined: Jan 2002
Posts: 30,701 Likes: 141 |
The lights will be bright with a 6 volt and good grounds + the bulbs will last longer.
Gene Schneider
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Joined: Sep 2003
Posts: 4,951
ChatMaster - 4,000
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ChatMaster - 4,000
Joined: Sep 2003
Posts: 4,951 |
Hey 1439,
I don't mean to sorta jump on the bandwagon against 8 volt batteries, so all I'll "say" is the guys who posted ahead of me are pretty much considered to know what they're talking about.
From the experience side, I can say I've only ever used 6 volt batts in my 6 volt Chevys. Never had any trouble, as long as the system was up to snuff. Two big issues: a PG starter in a PG car (such as a '54) and for sure having 6 volt cables.
RE your specific question; sorry, I don't have any answers.
Bill.
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Joined: Dec 2005
Posts: 13
Grease Monkey
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Grease Monkey
Joined: Dec 2005
Posts: 13 |
Thanks for all the reply's, It looks like I'll have to go back to 6 volt, even though I have replaced all cables starter ,gen and etc. MY 41
my41
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Joined: Oct 2003
Posts: 32
Shade Tree Mechanic
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Shade Tree Mechanic
Joined: Oct 2003
Posts: 32 |
My 42 sedan used to be hard to start
battery was always weak UNTIL I put on 0000 battery cables on both the pos and neg and also replaced the voltage regualator those def solved my problems, I highly recommend the big cables
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