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bigtexan
Samba Member
Joined: May 19, 2020
Posts: 20
Location: TX
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 Posted: Fri Nov 17, 2023 11:53 am Post subject: 12v coil on 6v car? |
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I have the engine on a stand. It has a 6v flywheel and 6v battery. All I have is a 12v coil.
Will the 12v coil work ok? or does it need I need a 6v coil? |
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EVfun
Samba Member
Joined: April 01, 2012
Posts: 5489
Location: Seattle
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| Posted: Fri Nov 17, 2023 12:12 pm Post subject: Re: 12v coil on 6v car? |
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On a stand operating without a load it might start and run. It shouldn't be harmless enough to try, the resistance of a 12 volt coil is higher than a 6 volt coil. The spark will be weak.
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heimlich 
VWNOS.com
Joined: November 20, 2016
Posts: 6623
Location: Houston, Texas
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| Posted: Fri Nov 17, 2023 2:36 pm Post subject: Re: 12v coil on 6v car? |
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Get a 12V battery and you can use the 12V coil. Usually the condenser doesn't care but it might not like the voltage changes.
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wimkever
Samba Member
Joined: July 16, 2004
Posts: 412
Location: Holland (the Netherlands)
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| Posted: Fri Nov 17, 2023 2:45 pm Post subject: Re: 12v coil on 6v car? |
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| heimlich wrote: |
| Usually the condenser doesn't care but it might not like the voltage changes. |
I've never heard of different condensers for 6 volt cars versus 12 volt cars.
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heimlich
VWNOS.com
Joined: November 20, 2016
Posts: 6623
Location: Houston, Texas
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| Posted: Fri Nov 17, 2023 2:51 pm Post subject: Re: 12v coil on 6v car? |
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| wimkever wrote: |
| heimlich wrote: |
| Usually the condenser doesn't care but it might not like the voltage changes. |
I've never heard of different condensers for 6 volt cars versus 12 volt cars. |
They are the same. I was referring to changing the voltage on the same condenser back and forth.
_________________
www.vwnos.com [email protected]
Classic Brands. Classic Quality.
Not all parts are made the same. NOS OE/OEM parts made mainly in West Germany, Early Germany, and Early Brazil are where VW produced the best quality parts and best fitting products.
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Apostle_
Samba Member
Joined: July 02, 2023
Posts: 39
Location: Texas
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| Posted: Fri Nov 17, 2023 3:33 pm Post subject: Re: 12v coil on 6v car? |
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| You can always run a 12V power supply to the coil. |
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bigtexan
Samba Member
Joined: May 19, 2020
Posts: 20
Location: TX
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| Posted: Fri Nov 17, 2023 3:50 pm Post subject: Re: 12v coil on 6v car? |
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| Will a 12V battery hurt the 6V starter? |
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heimlich
VWNOS.com
Joined: November 20, 2016
Posts: 6623
Location: Houston, Texas
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| Posted: Fri Nov 17, 2023 3:54 pm Post subject: Re: 12v coil on 6v car? |
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| bigtexan wrote: |
| Will a 12V battery hurt the 6V starter? |
I run a 6V starter with a 12V Beetle.
_________________
www.vwnos.com [email protected]
Classic Brands. Classic Quality.
Not all parts are made the same. NOS OE/OEM parts made mainly in West Germany, Early Germany, and Early Brazil are where VW produced the best quality parts and best fitting products.
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zerotofifty
Samba Member
Joined: December 27, 2003
Posts: 1576
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| Posted: Fri Nov 17, 2023 5:26 pm Post subject: Re: 12v coil on 6v car? |
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| bigtexan wrote: |
| Will a 12V battery hurt the 6V starter? |
No, I have been running my 6 volt starter for like near 40 years on 12 volts, it will spin fast. if your engine dont start I'd avoid very long cranking however, just so she dont overheat the starter (say dont crank her for minutes at a time) . But I have well in excess of 150K miles of 6 volt starter running on 12 volt.
Go for it.
The 12 volt coil will give about half the spark voltage if run on 6 volts, so you will have a very weak spark if running six volts on a 12 volt coil, it may run poorly with that.
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bigtexan
Samba Member
Joined: May 19, 2020
Posts: 20
Location: TX
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| Posted: Sat Nov 18, 2023 11:18 am Post subject: Re: 12v coil on 6v car? |
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| THANK YOU everyone for the quick help! Everyone I've encountered here is always so helpful. |
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