Is there any way to identify if a starter has been converted from 6v to 12v on the bench and not in the car. I have a model A starter that's in really good condition and it looks like the pole screws have been undone at some stage. I want a 12v starter but don't want to strip this one to convert it if it's not necessary. Resistance is too low to measure but can check wire gauge etc. I can't test it as a starter at this stage.
I ran a 6v on my Flathead T-Bucket that was 12v. Works just fine. Just don't crank it continuously for too long.
This tells and shows how to convert a 6V starter to 12V. It involves inserting the 6V starter armature into a 12V case and changing the end plate. How To Convert 6V Starter to 12V - The Ford Barn
6 volt starters will live a long life on 12 volts if you don't crank them too long and heat them up. I have been running my 6 volt starter in my CJ3A Jeep on 12 volts for 30 years with no problems.
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