1948 Ford 12 volt coil issues

[Tinker]

A skip coil is a no brainier, a believer for sure. Probably relieved every starting and running issue I've had for a decade after. Isn't a vw blue Bosch coil perfect for this also?

 

[G.M.]

A skip coil is a no brainier, a believer for sure. Probably relieved every starting and running issue I've had for a decade after. Isn't a vw blue Bosch coil perfect for this also?

Yes if you want spourious parts on your engine. I don't like
coils that don't look like Ford parts. G.M.

 

[AD1948Ford]

This is a no brainer. Get Skip to rebuild a 32 to 48 original Ford coil. It will start
your engine and run it hot or cold. Plus Skip has NEVER charged to repair one of
his coils that failed other than a few the ignition switch was left on. G.M.

GM, what size ballast resistor do i need to use with a skip coil? I just got my coil in and cant recall what size skip told me to get.

 

[klrh20frank]

I thought the 6 volt coil had 1.5 ohm across the terminals. The 12 volt coil had approx 3 ohms. therefore you put a resistor in series with the coil to lower the resistance to 1.5 ohms. The 12v coil with internal resistor should measure 1.5 ohms. i'm also tolt that the internal resistance coils are done by changine the size of the wire internally.

 

[TerryOH]

4 ohm is about correct for a 12V coil with internal resistor. no exterior resistor would be needed. Be aware the ignition condenser can cause the same problems you are experiencing. Plus when the condenser cools while you change the coil the engine should restart and continue to run until re-heated. The voltages you read are correct and do show your battery is charging.

 

[JSeery]

I thought the 6 volt coil had 1.5 ohm across the terminals. The 12 volt coil had approx 3 ohms. therefore you put a resistor in series with the coil to lower the resistance to 1.5 ohms. The 12v coil with internal resistor should measure 1.5 ohms. i'm also tolt that the internal resistance coils are done by changine the size of the wire internally.

First I have ever heard of this idea! I think you might mean if using a 6v coil (1.5 ohms) you use a 1.5 ohm ballast resistor in series with the coil to get 3.0 ohms total? No idea why you would want to reduce a 3.0 ohm coil to 1.5 ohms total in a 12v system.