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Old 07-19-2021, 12:53 PM   #1
STAN WHITE
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Default 12 Volt Bosch blue coil PN-00012

I am having a hard time locating this coil. Buba recomends them. Does anyone know where I can buy a couple of them. Other than E Bay ? Thanks stan
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Old 07-19-2021, 01:04 PM   #2
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Default Re: 12 Volt Bosch blue coil PN-00012

https://www.amazon.com/Bosch-00012-I...s%2C196&sr=8-5

They say they have 3 left and they are discounted.
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Old 07-19-2021, 01:24 PM   #3
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Default Re: 12 Volt Bosch blue coil PN-00012

Lots of VW/Porsche suppliers list them.
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Old 07-19-2021, 07:37 PM   #4
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Default Re: 12 Volt Bosch blue coil PN-00012

The Bosch "Blue" coil is nominally 3 ohms, one thing I can't figure out is why Bubba doesn't recommend a coil closer to the OEM value when used with points & switched ballast. Ford used (about) 1.4 ohm coils with an external ballast resistor for many years in 12 volt systems. So for these applications, it would seem like the Bosch "Red" coil of 1.8 ohms would be the logical choice?
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Old 07-20-2021, 09:54 AM   #5
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Default Re: 12 Volt Bosch blue coil PN-00012

I am going to use the Blue Coil PN-00012 . As per Buba! I hope he replys !. Now I am concerned ! I hope Buba can make me feel better. Thanks Stan
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Old 07-20-2021, 09:57 AM   #6
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Default Re: 12 Volt Bosch blue coil PN-00012

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I should have stated that I am running a Harmon & Collins Dual Coil Disributor Stan
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Old 07-20-2021, 09:58 AM   #7
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Default Re: 12 Volt Bosch blue coil PN-00012

Also with Bubas Condensers! Stan
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Old 07-20-2021, 11:04 AM   #8
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Default Re: 12 Volt Bosch blue coil PN-00012

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Originally Posted by STAN WHITE View Post
Also with Bubas Condensers! Stan
Stan, are you sure? I know you bought a couple of condensers from me. I don't think Bubba offers them.
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Old 07-20-2021, 11:23 AM   #9
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Default Re: 12 Volt Bosch blue coil PN-00012

Quote:
Originally Posted by Crankster View Post
The Bosch "Blue" coil is nominally 3 ohms, one thing I can't figure out is why Bubba doesn't recommend a coil closer to the OEM value when used with points & switched ballast. Ford used (about) 1.4 ohm coils with an external ballast resistor for many years in 12 volt systems. So for these applications, it would seem like the Bosch "Red" coil of 1.8 ohms would be the logical choice?


There were no early Fords with a 12 v,. supply. When changing over to 12 volts, this is the coil to use dump and any resistor in the circuit.
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Old 07-20-2021, 12:35 PM   #10
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Default Re: 12 Volt Bosch blue coil PN-00012

I've been using the black 00012 same coil just oil filled instead of epoxy..
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Old 07-20-2021, 01:26 PM   #11
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Default Re: 12 Volt Bosch blue coil PN-00012

I've had good luck with the Beru 12 v. blue coil and it's half the price of the Bosch.
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Old 07-20-2021, 03:31 PM   #12
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Default Re: 12 Volt Bosch blue coil PN-00012

Tubman, You are correct, Sorry I bought them from you. As you get older you make more errors. Sorry . Stan
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Old 07-20-2021, 05:58 PM   #13
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Default Re: 12 Volt Bosch blue coil PN-00012

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There were no early Fords with a 12 v,. supply. When changing over to 12 volts, this is the coil to use dump and any resistor in the circuit.
No there weren't any early Fords with a 12 volt supply, but that really isn't a factor. When Ford did change to 12 volts, they used an ignition coil with an approximately 1.4 ohm primary winding and a divider network utilizing an external ballast of approx 1.5 ohms that only switched in after engine start. See where I'm goin' with that?

A 3 ohm ignition coil could in theory have more difficult cold starts, or possibly when flooded. Ford set up their 12 volt ignitions the way the did for a reason, all cars and trucks from 1957 to 1974 basically. Many other makes and models did exactly the same thing.
'
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Old 07-20-2021, 06:27 PM   #14
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Default Re: 12 Volt Bosch blue coil PN-00012

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Originally Posted by STAN WHITE View Post
Tubman, You are correct, Sorry I bought them from you. As you get older you make more errors. Sorry . Stan
Don't I know it. I just wanted to make sure everyone was aware of the exact parts being used so they can give the best possible advice.

I can't wait to see the finished product!
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Old 07-20-2021, 07:46 PM   #15
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Default Re: 12 Volt Bosch blue coil PN-00012

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Originally Posted by Crankster View Post
No there weren't any early Fords with a 12 volt supply, but that really isn't a factor. When Ford did change to 12 volts, they used an ignition coil with an approximately 1.4 ohm primary winding and a divider network utilizing an external ballast of approx 1.5 ohms that only switched in after engine start. See where I'm goin' with that?

A 3 ohm ignition coil could in theory have more difficult cold starts, or possibly when flooded. Ford set up their 12 volt ignitions the way the did for a reason, all cars and trucks from 1957 to 1974 basically. Many other makes and models did exactly the same thing.
'
In theory it could, but it also introduces another part that can be prone to failure.
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Old 07-20-2021, 07:54 PM   #16
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Default Re: 12 Volt Bosch blue coil PN-00012

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Stan, are you sure? I know you bought a couple of condensers from me. I don't think Bubba offers them.
I have always stocked the Vertex Magneto condensors. Never seen a defective one ... .36 mfds
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Old 07-20-2021, 07:57 PM   #17
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Default Re: 12 Volt Bosch blue coil PN-00012

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Originally Posted by STAN WHITE View Post
I am going to use the Blue Coil PN-00012 . As per Buba! I hope he replys !. Now I am concerned ! I hope Buba can make me feel better. Thanks Stan
Yep i am hooked on the Bosch blue coil at 3.0 ohms , been buying them from amazon . I have also used the beru blue coil , a little less ohms but a good unit as well......
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Old 07-20-2021, 08:02 PM   #18
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Default Re: 12 Volt Bosch blue coil PN-00012

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Originally Posted by flatjack9 View Post
In theory it could, but it also introduces another part that can be prone to failure.
I've heard of Ballast resistors going bad occasionally but I don't think it's a cause for concern. Ford didn't seem to think so either (nor GM or Chrysler etc..) Remember this was THE classic points and condenser wiring circuit for millions and millions of cars and trucks, back when hollow state igntion ruled the roost.
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Old 07-20-2021, 09:48 PM   #19
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Default Re: 12 Volt Bosch blue coil PN-00012

To each his own.
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Old 07-21-2021, 08:22 AM   #20
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Default Re: 12 Volt Bosch blue coil PN-00012

A failed ballast resistor had me hitchhiking to work one morning.
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