I plan to kick around in my Model A for a while before a complete rebuild. It doesn't want to crank with the 6 volt system. If I put a 12 volt battery on, replace the coil with a 12 volt and disconnect the lights, am I good to go? Just had the starter rebuilt so it's ok. Anybody?
Before you go too far clean all of your grounds and make sure you have cables designed for 6 volts (they are larger than the 12 volt cables). Run an extra ground from where the ground cable connects to the frame and a bolt near the starter on the flywheel housing. Anything unusual about the engine you are trying to start? If you want a second opinion post on ford barn.com. Problem should go away. Charlie Stephens
Charlie, There's nothing unusual about the engine, it's practically new, everything rebuilt. It's completely stock and I plan to build a traditional hotrod but just wanted to drive it as is for a few days before tearing it apart. All wiring will be changed as well as lights. Just seemed simple to use a 12 volt battery and ignition coil temporarily. Thanks.
A couple of more thoughts. Any chance the starter was rewired to run on 12 volts (if so, maybe you can borrow a 6 volt one)? That might be your problem. If you run 12 volts on a 6 volt starter you will eventually break the bendix gear so you should upgrade the bendix gear (or rewire the starter) if you go 12 volts. Most Model A suppliers carry the upgraded type gear. Be sure to check out the 12 volt "Brite" bulbs from Ron Francis, (800) 292-1940, wire-works.com. They fit into the original sockets and are VERY bright. What do you plan for the generator if you add a 12 volt battery? Have you considered push starting the car or starting it with a hand crank (just be sure to retard the timing and pull up on the crank, don't push down. Begin with one revolution with the ignition off and someone pulling the choke. Don't wrap your thumb around the crank if you would like to keep it intact.) Charlie Stephens
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