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Ford 9N, 2N & 8N Discussion Forum
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12 volt jump start?

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Mike

02-10-2004 08:10:24




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Got this idea from a previous post. Ive been battling a 6 volt 2n that wont start in the cold and have been thinking of upgrading to 12 volt. If I just jump start with 12 volts directly to the starter would this give me a true idea of what the 12 volt upgrade would do for me (faster spins)?




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Mike

02-10-2004 13:57:30




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 Re: 12 volt jump start? in reply to Mike , 02-10-2004 08:10:24  
Mike,

You might go a cheaper route that converting to a 12 volt system. Just make sure your tractor is tuned properly, your starter is in good condition, that you have 1/0 or larger cables throughout your starting system and that all terminals are clean. If you do that you shouldn't have any problems starting at any temp.

These are things you're going to want to keep up with on your tractor no matter what voltage you're using. Good luck.

Mike

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souNdguy

02-10-2004 11:27:52




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 Re: 12 volt jump start? in reply to Mike , 02-10-2004 08:10:24  
Might be compression check time..

Soundguy



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Danny in CO

02-10-2004 10:52:51




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 Re: 12 volt jump start? in reply to Mike , 02-10-2004 08:10:24  
Mike,

I think you are actually talking about 2 different topics. Using a 12 volt battery to jump start a 6 volt system WILL spin the starter faster, but will do nothing for the spark side. I have a 48 8N that would not start in cold weather, even when I tried to jump from 12 volts. I "solved" my problem by converting to 12 volts (better starting was not the only reason). What really corrected my cold starting problem was rewiring the entire tractor and cleaning all the connections and putting on larger size battery cables.

So in my opinion before you start converting to 12 volts, make sure you have BIG battery cables and clean connections.

Good luck,
Danny

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Bob

02-10-2004 14:10:03




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 Re: Re: 12 volt jump start? in reply to Danny in CO, 02-10-2004 10:52:51  
Danny,
Actually, boosting the starter with 12 Volts directly WOULD do something for the ignition. Assuming the tractor 6 Volt battery is fully charged, you would have the full 6.25 Volts, or so from the battery available to the ignition system, rather than the 4 Volts, or so that the 6 Volt battery voltage drops to under a cranking load.



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DavidO...sorta

02-10-2004 10:14:08




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 Re: 12 volt jump start? in reply to Mike , 02-10-2004 08:10:24  
You should note that turning the starter is not the only thing effected by a 12V conversion and turning the engine over is not the only thing that effects starting. Most engines start better when they are warm for a lot of reasons. If you do the 12V conversation "properly" and have all good components, you may see some cold starting improvement; however, remember that an engine that is in good condition and well tuned (with a 6V system) starts just fine in very cold weather. There are several good reasons for converting to 12V. In my opinion, seeking better cold weather starts is not one of them.

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Bruce (VA)

02-10-2004 09:05:02




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 Re: 12 volt jump start? in reply to Mike , 02-10-2004 08:10:24  
Yes..... assuming your starter is ok. When I got my first N, I was surprised at how slow the starter turned, even with a new battery, cables, etc. I figured I just didn't remember how slow 6v was. Well, about 3 months later, the starter went bad & I took it in for a rebuild. When I put it back on the tractor, I was amazed at how fast it turned! Now, because I have a basis for comparison, it's easy for me to tell when the starter on one of the other N's is dragging. Generally speaking, converting to 12 volts because the starter won't turn fast enough to start the engine is a short term fix. Just a few days ago, there was a post on this board from an N owner in MN (I think) who started his 6v N at -50. So, 6 volts will work!

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souNdguy

02-10-2004 08:14:09




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 Re: 12 volt jump start? in reply to Mike , 02-10-2004 08:10:24  
More or less. Your cables from the battery ( if you converted ) will be shorter than the jumper cables you'll use to jump the 12v battery.

But it will be a rough idea anyway.

Soundguy



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Evil Steve

02-10-2004 08:13:14




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 Re: 12 volt jump start? in reply to Mike , 02-10-2004 08:10:24  
Yes.



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