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Need to convert to 12 volt

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Robby

02-22-2003 17:33:50




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Hi, I'm new to the tractor game, I bought myself a 1949? 8n , This tractor is very hard starting with the 6 volt battery but starts everytime with a jump from a 12 volt battery, I need to convert to 12 volt and need to know if I need to change out the starter ,coil, and if so where do I find these items?
Thanks

Rob




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Jim WI

02-24-2003 10:49:45




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 Re: Need to convert to 12 volt in reply to Robby, 02-22-2003 17:33:50  
First step is to figure out why it has trouble starting with the 6V system. I bet you'll find loose or dirty connections and undersized wires (especially to the starter).

After that, check to make sure the distributor is adjusted correctly, you have good REAL wire sparkplug wires that are connected in the right firing order and good, clean sparkplugs of the right type and gap.

Then check to see that the charging system is fully charging the battery (could be that the voltage regulator is regulating to a lower-than-correct voltage).

After you've done all the low-cost work above, then decide if it starts well enough.

BTW, I converted my 2N to 12V without a kit. It wasn't real hard to do but not everyone understands electricity or electronics (or has the parts and tools readily available). In my case, the generator and the battery were both dead anyway so it was cheaper to convert.

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Ken/Wa

02-23-2003 08:30:30




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 Re: Need to convert to 12 volt in reply to Robby, 02-22-2003 17:33:50  
I have a 12v system on one tractor, that came that way. (when I bought it) It starts great, because I keep it tuned up. The other tractor has a 6v, which I keep tuned up. I think the 6v actually starts better. It is probably in better condition. I used to have problems with the 6v when I first got it, but put on a bigger battery cable, and cleaned up the ground, and it made all the difference in the world.

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dave#1

02-23-2003 06:29:18




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 Re: Need to convert to 12 volt in reply to Robby, 02-22-2003 17:33:50  
Hey Rob, I'm one who's all for 12 volt, it just seems easier, cheaper to deal with IMO.

There is a fellow here that post all the time that said that back in the Colorado mountians, he used to take his 6 volt car battery into the house on below ZERO nites so the ol' cold blooded Plymouth 6 cyl would really spin over in the morning so it would start "Easier" Now, I've never had to do this with any of my 12 volt cars in the last 25 years so that might be another good reason to convert to 12 volts.

HTH

later,dave

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Al (NC)

02-23-2003 07:33:51




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 Re: Re: Need to convert to 12 volt in reply to dave#1, 02-23-2003 06:29:18  
I am also a 12 volt fan. I have converted 2 Jubilees and a 9N with NO problems.



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me too==bj/8n/mt

02-23-2003 06:27:20




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 Re: Need to convert to 12 volt in reply to Robby, 02-22-2003 17:33:50  
If you have some twelve volt accessory you can't live without go ahead and convert. On the other hand if you are trying to solve a starting problem sooner or later you are going to have to fix whatever is wrong and converting to twelve volts will only postpone that. Respectfully, if you have to ask the question you probably aren't mechanic enough to do it right.

My two six volt 8ns only missed one start last winter and none this winter in Montana and the one time wasn't the tractor's fault.

Your mileage may vary

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Ron/PA

02-23-2003 06:02:39




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 Re: Need to convert to 12 volt in reply to Robby, 02-22-2003 17:33:50  
Robby, I have converted a few N's to 12 volt for other folks in the area, (always against my better judgment) and they will work fine, however within a year the real problems start to show up. Compression, exhaust leaks, etc. One fellow towed his 8n to get it started and dropped it off with a note to "CHANGE THE G.D. THING TO 12 VOLTS SO IT WILL START" I called him later that afternoon, and asked him to stop by and check it out.
He was tickled, it started just like new. The only money I spent on his unit was a new set of cables I had here, I cleaned the plugs, set the points, shined up the generator, and set the carb. made everything clean bright and tight, and poof! Just like it ought to work.
Be sure you really want to do this before you start.
Good luck
Ron
PS, mine is still 6 volt and prolly always will be.

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Jim Cox (SW Missouri)

02-22-2003 21:48:43




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 Re: Need to convert to 12 volt in reply to Robby, 02-22-2003 17:33:50  
Every time I open an alternator, I remember how simple generators are, and can see no reason short of a meyers pump/plow for going to 12V. My '41 9N was 12V when I got it, but seriously botched. i'm thrilled it actually runs. I replaced the igntion switch according to diagrams, and the thing didn't run anymore. Took some time to find out why. Yes, it ran 12V, but wasn't anything to be proud of. Miles and miles of black tape. I'll keep it 12V just to make taillights, etc. easier, but it's getting a generator ASAP. If you do go 12V, go out and get a good locking folo-thru drive, junk the bendix style, and have a shunt winding put in your starter. Tell your local rebuilder it's for a 1962 galaxy. He'll know what to do. But if going 12V is really going to make all these folks happy, Know this: Delco and Benz will both be going 36/42V in the next five years, will we all have the urge to go 36V then? By going to a higher voltage, you can use less current to get the same power dissipated. Less current means less copper. Less copper means less cost. Think of High Voltage power lines. less cable, less cost, less weight. BTW, Dell WA is ALWAYS right, and if you really stump him, he's big enough to say so.
Good luck starting
Jim Cox
Starter Rebuilder Guy

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Jerry

02-22-2003 19:35:22




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 Re: Need to convert to 12 volt in reply to Robby, 02-22-2003 17:33:50  
My 49 was slow so I put a 8volt battery in, works good, no problems



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sorry . . . Dell (WA)

02-22-2003 19:54:15




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 Re: Re: Need to convert to 12 volt in reply to Jerry, 02-22-2003 19:35:22  
Jerry..... ..unless you jimmied your 6 volt voltage regulator to charge your 8 volt battery, your just been starting your tractor with a discharged 8 volt battery. Mighta well bought a good 6 volt battery.

I'm notta fan of the weaknee 8 volt bandage approach of trying to improve your 6 volt Ford N-Tractor starting. Remember the 6 volt mantra: "keep'me clean, bright, and tight" and don't be fer usin' enny of them thar wimpy ferrin' battery cables. Gettcha some 'arry chested 'merrican 1/0 (thick as yer thumb) battery cables..... ....respectfully, Dell

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Bishop

02-22-2003 19:20:02




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 Re: Need to convert to 12 volt in reply to Robby, 02-22-2003 17:33:50  
My fathter-in-law bought a N tractor after I had mine for about three years. 1st thing he did was change it to 12 volts, at about $300+, one month later the 12V dist. insert fried, that cost him another $97, later that year he started having starting problems, so a friend convinced him to add an electric fuel pump, that helped it for about 30 days, then it failed to start again, the friend advised him to add a pressure regulator to the fuel pump to increase the flow, that worked about a week then the N failed to start again. He asked me about what to do and I ask him to check the filter in the tank and the filter in the carb. Both were clogged. After cleaning it started right up. After he spent about $500 to go from 6v to 12V, he was so frustrated with the 12V conversion cost he sold it.
My 52 8N is still 6V, and it starts even when I know it won't.

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Dell (WA)

02-22-2003 19:09:36




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 Re: Need to convert to 12 volt in reply to Robby, 02-22-2003 17:33:50  
Robby..... ...find out WHY you have to jumpstart before you go converting to 12 volts. Our modern ears are so used to the highspeed spin of our 12 volt cars, that the slow turnover of a 6 volt starter makes many think there is something wrong.

Get an I&T FO-4 manual, available from many sponsors of this fine N-Board. Most tractor parts emporiums. Try www.n-news.com archives for manuals for the more than 400 implements that were made for the 8N. Amazingly enuff, even Ford/New Holland even sells 'em. My local (byte my tongue) John Deere parts counter has it on display for sale. $29 cheap, gettcha 1 and readitt.

As the others have pointed out, a good tune-up is essential. Frontmounts are a 2-bolt removal and worked on the kitchen table. (or other well lit comfortable work area). Major problem is skinny battery cables, get 1/0 thick as yer thumb. Remember the 6 volt mantra: "keep'em clean, bright, and tight".

Also do a compression test, dry then wet, 5 puffs, 90 psi min.

If you're still convinced that you really need to convert to 12 volts. Recommend you bite the bullet and buy a conversion kit, sure prevents a lotta hassle. And if you find the conversions instructions un-clear, (and alotta shadetree mechanics do) ask. As you've found out 12 volts on a 6 volt starter, really spins that ol'N-Engine, but 12 volts on the frontmount ignition coil causes lots of problems for the electrially challenged.

I'm a 12 volt advocate for the right reasons. That said, I haven't found the right reason to convert my eazy starting '52 8N, and I know how to do it right. Infact I know 7 ways to do it right..... ....respectfully, Dell

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John A - Va

02-22-2003 19:06:02




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 Re: Need to convert to 12 volt in reply to Robby, 02-22-2003 17:33:50  
Your tractor - your bucks, however, converting to 12 volts is not a cure-all for hard starting. Lots of posts on the board relating to 12 volt problems. Newer engines with higher compresion and more power gadjets require more power to crank. Properly tuned low compression 8N's will crank easily on 6 volts.

Get it tuned, check wiring, and as previously stated, get big fat wires for the battery leads. Be sure the carburator is properly adjusted.

Other more knowledgable folks than I on the board more than willing to help.

Hope this helps

JA - easy cranking '51 8N

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MikeC

02-22-2003 18:34:00




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 Re: Need to convert to 12 volt in reply to Robby, 02-22-2003 17:33:50  
Before you convert it to 12 volts, make sure that you are in good mechanical shape. I would give it a good tune up, plugs, points, plug wires, cap, rotor, etc. Since you say that you have a 49 I'll assume that you have a front mount distributor. You can remove the distributor to work on it since it only goes on one way.

After you give it a complete tune up make sure all of your electrical connections are "clean, bright and tight".

Since the tractor is new to you, I would check the compression to make sure that you have the minimum spec of 90#'s. Do a wet and dry test so we can make sure no rings or valves are sticking.

Again, since the tractor is new to you I would clean all three fuel filter to make sure you get good fuel flow.

Once you have done the above, if you still feel the need to convert to 12 volts then by all means do so. Keep in mind that if kept properly tuned the 6 volt system will crank and start at -20 (been there, done that). I have a 2N that is mine and an 8N that I am "babysitting" that both start with no trouble at sub zero temperatures with their properly maintained 6 volt systems.

Good Luck!

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raytasch

02-22-2003 18:29:39




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 Re: Need to convert to 12 volt in reply to Robby, 02-22-2003 17:33:50  
Rob, Why not fix the 6V instead of masking the problem by throwing 12v at it. There is NO reason that an N needs 12v to start. Start out by looking at those battery cables. They should be big, the size of your thumb and not some wimpy 4-6 ga. All connection must be tight and clean. Might try a compression check. A tired engine will not start easily.
JMHO,
ray



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TimK

02-22-2003 17:48:32




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 Re: Need to convert to 12 volt in reply to Robby, 02-22-2003 17:33:50  
Don't convert it. Not yet. There are loads of messages over the years on this Board from people who have a botched 12v conversion. 12v. is used by a lot of people to cover up other problems with the engine or ignition system, but it eventually catches up to you. If your generator is working ok, and the battery is a good, strong, 6v. with at least 500 cca, and the points and rotor are right, and the coil is good, and the connections and resister are good, it will start even in the coldest of weather. I did the same thing when I bought my 2n ... went out and spent a lot of money on a conversion kit, but haven't used it yet ! I hope Dell also responds to your post. My $.02

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Robby

02-22-2003 17:56:29




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 Re: Re: Need to convert to 12 volt in reply to TimK, 02-22-2003 17:48:32  
Thanks Tim,

My 6 volt battery is new and my gen is chargeing but yet it still won't start with 6 volts, also I'm guessing 12 volt must be better since all cars and trucks are now 12 volt and not 6 ?

Thanks
Rob



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dave#1

02-23-2003 06:52:44




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 Re: Re: Re: Need to convert to 12 volt in reply to Robby, 02-22-2003 17:56:29  
Hey Rob, As Dell said, a 12 volt starter will spin alot faster and therefor might just make your N start alittle better. For why they went to 12 volt?, well Dell is correct again except there is more to the puzzle than he said, I read somewhere (for the life of me I can't find it)that by useing higher voltage batterys, the wire size and amount of wire through out the vehicle can be reduced and because there is XXXX amount of wireing in todays vehicle's, this adds up to a sizeable saveings, and we know how the car companys like to save money.
HTH

later,dave

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Dell (WA)

02-23-2003 00:29:15




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 Re: Re: Re: Need to convert to 12 volt in reply to Robby, 02-22-2003 17:56:29  
Robby..... ....don't know if anyone satisfactorily answered your question....."I'm guessing 12 volt must be better since all cars and trucks are now 12 volt".....Yeah, butt.....Why did they stop a 12 volts? Military was already using 28 volts, mostly for tube radio equipment, but starting airplane and tank engines too.

In early 50's Detroit started producing hi-compression V-8's as a response to consumer demand for MORE HORSEPOWER. HP sold cars. Hard to start didn't sell cars. It was quite cost effective to make a 12 volt battery (2 small 6 volt battery in bigger case).

Then the automotive consumer told Detroit, if you want to sell me a new car, its also gotta have airconditioning, power window, power seats, 500 watts of radio amps, eyeblinding headlights for safer driving on lit freeways. All this takes ELECTRICAL POWER. Today's automotive electrical designers are actually talking 36 and 42 volts for future car requirements. You know, computerized everything.

Maybe the question should be asked why 6 volts? Turns out that in developing the electrical starter (for lady drivers) in 1915's, 6 volts was the smallest/cheapest battery that could reliably start the low compression engines. Thats why 6 volts.

So in 1939, when Henry Ford designed the 9N tractor, he just got a 6 volt starter off his automotive assembly line. And why not, its addequate, already invented, and cheaper than designing a new starter.

One thing Ford did different on the N-Engine, was put the starter on the leftside of the engine, where it is eazy to get to. Instead of on the rightside (like his V-8's), hidden behind the hot exhaust..... .....Dell

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Ultradog MN

02-22-2003 18:13:21




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 Re: Re: Re: Need to convert to 12 volt in reply to Robby, 02-22-2003 17:56:29  
About 2 weeks ago when we had that cold snap here where it was below 0 for about a week some of the guys here were talking about their tractors starting in sub sero temps.
Mine hadn't been started for about a week but just for kicks I went out in -8 temps and my 6V 2N fired right up.
It's your tractor and you can convert it to 12V if you want to
But untill I get around to adding cruise control, a CD player and air conditioning I probably wont change mine to 12V.
Dell WA will probably be along here shortly and be able to help you.
Be prepared to answer some questions.
And don't get mad at him even if you think you should.
He'll get you starting like you should whether it's with 6V or 12.
Happy tractoring

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