12 volt conversion question re: starter solenoid

norm s · Dec 21, 2011

So I"m converting my neighbors 8N and have the question about what to do with the starter solenoid. Is there a 12V starter mount version available? Local auto parts boys who are pretty good with tractor parts and questions couldn't find one. Can you just put an ignition ballast resistor in series with the coil? Any other suggestions? Was hoping to not just mount a regular flat mount solenoid somewhere and rewire...

Thanx!

Norm

JMOR · Dec 21, 2011

(quoted from post at 17:49:10 12/21/11) So I"m converting my neighbors 8N and have the question about what to do with the starter solenoid. Is there a 12V starter mount version available? Local auto parts boys who are pretty good with tractor parts and questions couldn't find one. Can you just put an ignition ballast resistor in series with the coil? Any other suggestions? Was hoping to not just mount a regular flat mount solenoid somewhere and rewire...

Thanx!

Norm

olenoid is so robust & 'on' period so short that it will be just fine on 12v.....thousands running for decades like that.

old · Dec 21, 2011

The 6 volt one will work just fine for years unless of course you just plain and simple hold it in the start position for a very long time. Yes there was a 12 volt one but it was made for the diesel tractors like the 801 series diesels but as I said the 6 volt one works fine

Bruce (VA) · Dec 21, 2011

" Can you just put an ignition ballast resistor in series with the coil?"

Does the tractor have a front or side distributor?
50 Tips

norm s · Dec 21, 2011

It has a front mounted distributor. Why do you ask?

norm s · Dec 21, 2011

Great to hear, thanks!

JMOR · Dec 21, 2011

(quoted from post at 00:03:51 12/22/11) It has a front mounted distributor. Why do you ask?

ecause when you said coil & resistor in same sentence, his mind jumped to ignition coil, but you meant solenoid coil, right?

TheOldHokie · Dec 22, 2011

(quoted from post at 00:21:12 12/22/11)

(quoted from post at 00:03:51 12/22/11) It has a front mounted distributor. Why do you ask?

Click to expand...

ecause when you said coil & resistor in same sentence, his mind jumped to ignition coil, but you meant solenoid coil, right?

I saw that one coming - :lol: :lol: :lol:

You've been mighty quiet JMOR and I was beginning to worry about you. Glad to see you are still up and about

Have a VeryMerry Christmas!!!!

TOH

Bruce (VA) · Dec 22, 2011

" Why do you ask? "

I asked because I assumed you wanted a correct answer to your question regarding ignition circuit resistance.

The front coil & side coil have different internal resistance. If you want the tractor to start & run w/o burning up the coil, you need to get the correct resistance in the circuit. Too much & it won't start or if it does start, it will run poorly. Too little & you burn up the coil.

Because it's a front coil, it already has the OEM ballast resistor & it needs to stay there w/ the 12v conversion.

You have three choices to handle the increased current.

You can just buy a "12v" coil & install it. As long as it has 2.5 ohms or more of internal resistance, all will be fine.

Or, you can keep the 6v coil & install a fixed resistor to reduce the current to less than 4 amps. That will require you to measure either the current or the resistance in the circuit to get the correct resistor.

Or, you can just get a resistor of some unknown value & wire it up to the 6v coil & hope for the best.

Just tell us which option you plan to take & plenty of folks can give you advice.
50 Tips

norm s · Dec 22, 2011

Thanks for the info Bruce, good to know also but I was actually asking about the starter solenoid not the ignition coil - see the subject line

Other folks have answered on that one already so I'm good unless you have a different opinion.

Norm

12 volt conversion question re: starter solenoid

norm s

Member

JMOR

Well-known Member

old

Well-known Member

Bruce (VA)

Well-known Member

norm s

Member

norm s

Member

JMOR

Well-known Member

TheOldHokie

Well-known Member

Bruce (VA)

Well-known Member

norm s

Member

Similar threads