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MG MGA - 6 Volt Battery alternative
|Would 2, 6-volt motorcycle or lawn tractor batteries start the car?|
|I don't think there will be enough cold cranking amps CCA to turn the engine over and have power to the points to start it.. It would probley take a lot of those batteries hooked up together to make it work Let's hear from Barney and see what he has to say!!!|
|Thanks for your reply, Jeff. I saw that one 6-volt motorcycle battery had about 300 CCA. So I'm guessing that two batteries would be double. I operate the car in temperate weather.|
I don't feel like purchasing two, new, proper MGA 6-volt batteries. I also don't feel like elongating the battery cradle to accommodate a 12-volt battery.
|Just buy a 12V that fits in the existing battery tray. Works fine in my car, even with the higher compression and supercharger.|
Two 6 volt batteries in series double the voltage but CCA doe NOT double.
Check these sites for dimensions for various battery sizes: http://www.rtpnet.org/~teaa/bcigroup.html
|Thanks for your input, guys. My battery cradles are not proper replacements. I fashioned and welded angle iron neatly around the original type batteries. Unfortunately, a 12-volt group 26 battery will not fit. For what a pair of 6-volt motorcycle batteries cost, I just might roll the dice.|
For what it's worth you may not start it on a cold day in NY. Take time and less money that two 6v units and just enlarge the battery box and fit a group 24. 300 CCA will not do the trick.
|Arthur, redo your battery box to hold one 26 series battery. These bateries work great and I have not bought one since I replaced it in 1980......Like I said, I have not bought one as I bought a LIFETIME from JC Penny and now Firestone replaces them for me. Those guys were stupid to sell me one.!!!!!!!|
|Everyone who is trying to give you advice is trying to be polite. It appears bluntness is called for. Your Motorcycle battery idea WONT work. It will be a waste of money. Follow Jeff's advice and redo the battery box on the Passenger side to fit a proper 12 V car battery. I prefer the Optima batteries as they are more durable and don't create the acid damage normal batteries do.|
|R J Brown|
|Thanks. That's what I wanted to know.|
This thread was discussed between 18/09/2007 and 19/09/2007
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