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BUSY BOLTERS Are you one?  The Shop Area
continues to pull in the most views on the Stovebolt. In August alone there were over 22,000 views in those 13 forums.
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Mod | | | Forums66 Topics126,781 Posts1,039,297 Members48,100 | | Most Online2,175
Jul 21st, 2025 | | | | Joined: Jan 2009 Posts: 246 Shop Shark | | Shop Shark Joined: Jan 2009 Posts: 246 | Does anyone know if the 12 volt coils with the built in resistor do they work better than having an external resistor ? | | | | | Joined: Jun 2012 Posts: 1,747 'Bolter | | 'Bolter Joined: Jun 2012 Posts: 1,747 | Simple and reliable. But, No way to provide a hot spark on start. What is the cost? More or less than a new coil and resistor? They work fine and cost, or availability would be the only reason to use one.
Steve H
| | | | | Joined: Aug 2000 Posts: 1,429 'Bolter | | 'Bolter Joined: Aug 2000 Posts: 1,429 | I'm using one and no issues. 12 volts with the old 6 volt starter so it spins pretty darn fast. Never had an issue.
Dennis
40 Chevy 1/2 ton
| | | | | Joined: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | The internal resistance coils are made for low RPM & few cylinder engines, like tractors. If they worked on highway vehicles the manufactors would have used them.
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne SuperIn the Gallery Forum | | | | | Joined: Sep 2006 Posts: 3,597 'Bolter | | 'Bolter Joined: Sep 2006 Posts: 3,597 | This is from the Jim Carter catalog for item EL158
"This item is a traditional round 12 volt coil but has a built in reducer. Eliminates the need for outside reducer EL181 when changing to a 12 volt system, includes mounting bracket....Can be used on 6 cylinder engines from 1937 - mid 1955 when the 6 volt system is changed to a 12 volt. (Remember the ignition points in even a 12 volt system will only operate on 6 volts, through the 1970's)...Sold each...Made in USA".
This is the coil I have been running on the 54' 235 in my 50' (12-volt converted) for the last four years. No external resistor, no burned points or other issues.
| | | | | Joined: Feb 2004 Posts: 28,675 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 28,675 |
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
| | | | | Joined: Jul 2013 Posts: 863 Shop Shark | | Shop Shark Joined: Jul 2013 Posts: 863 | Pertronix makes a 12 volt internal resistor coil.Flame Thrower Pt# 40511 Black. This coil is suppose to be a much hotter spark. Like the "Beating a dead horse" emoticon! 
"Pay attention to the details! It ALWAYS pays off."
1949 Chevrolet 3100 Series 1/2 ton Pickup
1964 Chevrolet C10 (Ol' Yella) (SOLD)
1958 Chevrolet Biscayne 2 door (SOLD)
1970 VW Beetle
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