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Ford 9N, 2N & 8N Discussion Forum
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Re: 12V conversion - Engine cuts out

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Jim in Eastern NC

02-05-2013 06:45:29
75.110.91.62



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Perhaps your coil was on the borderline of being defective, and the higher voltage before the resister heats up is just too much for it. I expect you'll be fine with a 12v coil.




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HeyObie

02-05-2013 06:54:01
74.106.225.13



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 Re: 12V conversion - Engine cuts out in reply to Jim in Eastern NC, 02-05-2013 06:45:29  
I ordered a 12 volt coil yesterday just to have everything brand spanking new.

When I install the new 12V coil, I assume I remove the resistor? Is this correct? Thanks again



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Jim in Eastern NC

02-05-2013 07:23:00
75.110.91.62



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 Re: 12V conversion - Engine cuts out in reply to HeyObie, 02-05-2013 06:54:01  
You'll find differing opinions on this, but I ran a 12v system with a 12v coil for years with two resistors, the ceramic one and the coiled wire version, in series. And it cranked and ran fine and points lasted several years. Last year, I converted further to Electronic Ignition, and I'm pleased with that, too (but I saved my points plate just in case!). Mine is a 48 8N. I don't think you're risking much either way, but I would use the resistor you bought, and I expect it'll run fine.

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soundguy

02-05-2013 11:48:16
184.247.53.140



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 Re: 12V conversion - Engine cuts out in reply to Jim in Eastern NC, 02-05-2013 07:23:00  
you are compairing apples to oranges and thus providing bad info.

there is a WORLD of difference in a 12v round coil and a 12v square coil.

the 12v square coils for the FRONT mount machines REQUIRE an external resistor.

the 12v round coil foor the side mount ignition does NOT require an external resistor.

relating experionce of one to the other introduces false info...



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HeyObie

02-05-2013 07:36:36
74.106.225.13



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 Re: 12V conversion - Engine cuts out in reply to Jim in Eastern NC, 02-05-2013 07:23:00  
Thanks Jim.

The front mount 8N's have a coiled resistor. The side mounts have no resistor.

So on a side mount, with a 6 volt system and a 6 volt coil, there is no resistor. So I imagine that a side mount with a 12 volt system and a 12 volt coil, no resistor is required.

I'd rather not have anything extra hanging on the 8N if I don't need it.



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Texas!

02-05-2013 08:32:12
70.167.47.174



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 Re: 12V conversion - Engine cuts out in reply to HeyObie, 02-05-2013 07:36:36  
As long as your new coil is a true 12V coil marked "12V No External Resistor Required" you'll be OK. A lot of supposed 12V coils are actually 6V coils and there is a high resistance wire in the vehicle's electrical system to compensate.



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