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Jul 21st, 2025 | | | | Joined: Apr 2000 Posts: 199 'Bolter | | 'Bolter Joined: Apr 2000 Posts: 199 | I see where it is said the difference between the 12 and 6 volt starters coincides with the flywheel tooth count. Why would I have 2 1954 trucks (apparently original with 6V everything) with the higher tooth count flywheels and smaller diameter gears on the starters that match with black tags not red?
Can I get the “12 volt” starter rebuilt to 6 v specifications so I don’t have to swap my clutch and flywheel? I know I can swap the truck to 12v. I just don’t feel like it!
Thanks. | | | | | Joined: Feb 2004 Posts: 28,674 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 28,674 | Normally, a "black label" 6V starter will have an armature diameter of about 5/8", and it will be matched up with a 139 tooth flywheel. The 1955-up "red label" starter will have a shaft diameter close to 1/2", and the correct flywheel will have 168 teeth. BOTH starter drives have 9 teeth, but the tooth pitch will be slightly different. It might be possible to mix and match parts to get a 6V housing and field coils combined with a 12V armature and drive gear, but I have my doubts that it would crank at the proper speed with a 6V battery.
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
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| | | | | Joined: Apr 2000 Posts: 199 'Bolter | | 'Bolter Joined: Apr 2000 Posts: 199 | I’ll have to run the number on the starter tag. Maybe someone previously mixed and matched. | | |
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