Would 12 volts on a 6 volt system kill your ignition system if its not converted?

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

AuroraGirl

Full Access Member
Joined
Sep 8, 2019
Posts
9,121
Reaction score
6,038
Location
Northern Wisconsin
First Name
Taylor
Truck Year
1978, 1980
Truck Model
K10, K25
Engine Size
400(?), 350
Then why did you ask if it was from charging with 6 volts if you knew that. Also curious how you know that (albeit a viable cause of explosion)?
Reasons. And more or less CAN that for 8t
 

Ricko1966

Full Access Member
Joined
Apr 11, 2017
Posts
3,938
Reaction score
5,691
Location
kansas
First Name
Rick
Truck Year
1975
Truck Model
c20
Engine Size
350
You can fry the points and condenser sending 12v to them. As I recall, even late 60s vehicles used a resistance wire before the power to the points and condenser. The HEI units need 12v, but the stock units should not.
It won't harm the points.I used to do 12v conversions on 6 v cars all the time.The resistance wire is in the hot lead to the coil.When I did a 12v swap I used the 6volt starter on 12v no problem a resistor to slow down the wipers used a 12v alternator with a built in regulator a 12v coil with an internal ballast and changed all the bulbs and the radio.
 

87scotty

Full Access Member
Joined
Oct 8, 2015
Posts
1,074
Reaction score
282
Location
Central il
First Name
Andrew
Truck Year
1987
Truck Model
V20
Engine Size
5.7 for now
think most the fergussens and old fords at least the ones ive worked on were pos ground didmt have them flopped did ya
 

AuroraGirl

Full Access Member
Joined
Sep 8, 2019
Posts
9,121
Reaction score
6,038
Location
Northern Wisconsin
First Name
Taylor
Truck Year
1978, 1980
Truck Model
K10, K25
Engine Size
400(?), 350
I had a 12 volt battery hooked negative ground and positive hot in a 6 volt tractor. It ran surprisingly a long time. The ground overheated at one point and the battery blew up, and eventually no spark.

But so did my grandpa, so I'm not sure what was all going on. If I fix the tractor I might as well 12 volt it? I'm prob gonna have to replace all components anyway and the gauges are all toast from water damage.
 

Latest posts

Forum statistics

Threads
41,853
Posts
903,539
Members
33,365
Latest member
rossivey
Top