The Ford Barn

1949mercury · 03-11-2017, 01:34 AM

What 12v coil with built in resister do I need to convert my 49 flathead?

Charlie ny · 03-11-2017, 05:22 AM

49merc,
NAPA IC 64 or the Bosch 00012. The Bosch has a funky aluminum case if
you are into funky.
Charlie ny

TomT/Williamsburg · 03-11-2017, 08:26 AM

You might also check with Bubba's Ignition. I use his could and they have worked well for me ....

1949mercury · 03-11-2017, 12:37 PM

I don't like funky haha. I got a 12v coil and stater solenoid from Vintage Auto garage but I think i burnt it up. Put a meter on it and Ohm 200 +- was 3.4 & 20k center coil was 8.4. Trying to get my motor to start on the frame 2 yrs ago I had it dynoed and broke in it ran good. I also got a napa number off of a tractor site ic145b ? Anyone heard of that one?

1949mercury · 03-11-2017, 08:16 PM

I went to Napa and the ic64 is now the ic14.
Anyone know the OHM reading it's supposed to be?

JSeery · 03-11-2017, 08:24 PM

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Quote:

Originally Posted by 1949mercury

I went to Napa and the ic64 is now the ic14.
Anyone know the OHM reading it's supposed to be?

You would have to have the spec's on that specific coil, but in general as shown. IF you are not using a ballast resistor you want something in the 4 ohm range in the coil itself.

All I can find with a quick search is: NAPA IC-14 Echlin 3.25 ohms primary resistance

1949mercury · 03-11-2017, 09:02 PM

Thanks. That's what mine is measuring. So I guess I didn't over heat it.

Drbrown · 03-11-2017, 09:09 PM

JSeery: Thanks for posting that testing diagram.

I have a 12 volt coil from both Bubba and Charlie NY (a Bosch Blue). IMHO they are both top quality for professional services and parts. My two both test at about 3.4 ohms.

03-11-2017, 01:34 AM	#1
1949mercury Senior Member Join Date: Jan 2017 Location: Washington state Posts: 119	12v coil ? What 12v coil with built in resister do I need to convert my 49 flathead?

03-11-2017, 05:22 AM	#2
Charlie ny BANNED Join Date: May 2010 Posts: 3,019	Re: 12v coil ? 49merc, NAPA IC 64 or the Bosch 00012. The Bosch has a funky aluminum case if you are into funky. Charlie ny

03-11-2017, 08:26 AM	#3
TomT/Williamsburg Senior Member Join Date: May 2010 Location: Williamsburg, Virginia Posts: 2,654	Re: 12v coil ? You might also check with Bubba's Ignition. I use his could and they have worked well for me .... __________________ Run to the LA Roadster Show - 2016 My Run to Bonneville - 2013 My 32 5-Window Build My Run to the LSRU

03-11-2017, 12:37 PM	#4
1949mercury Senior Member Join Date: Jan 2017 Location: Washington state Posts: 119	Re: 12v coil ? I don't like funky haha. I got a 12v coil and stater solenoid from Vintage Auto garage but I think i burnt it up. Put a meter on it and Ohm 200 +- was 3.4 & 20k center coil was 8.4. Trying to get my motor to start on the frame 2 yrs ago I had it dynoed and broke in it ran good. I also got a napa number off of a tractor site ic145b ? Anyone heard of that one?

03-11-2017, 08:16 PM	#5
1949mercury Senior Member Join Date: Jan 2017 Location: Washington state Posts: 119	Re: 12v coil ? I went to Napa and the ic64 is now the ic14. Anyone know the OHM reading it's supposed to be?

03-11-2017, 09:02 PM	#7
1949mercury Senior Member Join Date: Jan 2017 Location: Washington state Posts: 119	Re: 12v coil ? Thanks. That's what mine is measuring. So I guess I didn't over heat it.

03-11-2017, 09:09 PM	#8
Drbrown Senior Member Join Date: Oct 2013 Location: Glens Falls NY Posts: 1,267	Re: 12v coil ? JSeery: Thanks for posting that testing diagram. I have a 12 volt coil from both Bubba and Charlie NY (a Bosch Blue). IMHO they are both top quality for professional services and parts. My two both test at about 3.4 ohms. Last edited by Drbrown; 03-11-2017 at 11:55 PM.