51 8n 12 volt conversion points and condenser

Richard 8N · Feb 17, 2015

Hi, since I am converting my 51 8n side mount
distributor to 12 volts, does the points and
condenser need to be modified adjusted or changed? a
ballast resistor will be installed before the
current goes to the 12 volt coil. thanks

gene bender · Feb 17, 2015

TL (Va) · Feb 17, 2015

Probably don't need the resistor if you are going to use a 12v coil.
Check on the 8n board, lots of 12v users there.

old · Feb 17, 2015

Is it a true 12 volt coil or does it say external resister needed or some such wording?? As for the point and condenser they are the same for 6 or 12 volts gaped at 0.025

2underage · Feb 17, 2015

Buy the conversion kit from YT. I bet that it comes with instructions.

Richard 8N · Feb 17, 2015

Hi yes it is a 12 volt coil its a red coil, I forget what brand it is. please tell will I be ok using this resistor from Napa parts store? I will post the link. thanks

http://www.napaonline.com/Catalog/CatalogItemDetail.aspx/Ignition-Coil-Resistor/_/R-ECHICR13_0158171088
true 12 volt coil and ballast resistor link from Napa

old · Feb 17, 2015

A true 12 volt coil needs no ballast resister. There are some coils that are called 12 volt coils but on them it will say external resister needed or some such thing.

Richard 8N · Feb 17, 2015

thank you for your help. I just found out that my 12 volt coil needs a ballast resistor. can I use the Napa ballast resistor? it is 1.82 Ohms thanks

http://www.napaonline.com/Catalog/CatalogItemDetail.aspx/Ignition-Coil-Resistor/_/R-ECHICR13_0158171088
Untitled URL Link

old · Feb 17, 2015

Probably can use that one of as I use a VR-1 that O'Reilly's auto parts has. I like the VR-1 due to the fact it mounts like a volume control and mounting it that way makes for a good heat sink

Richard 8N · Feb 19, 2015

Hi, I just bought my ignition coil resistor from Napa their is a link for it. and today I applied 12 volts to the resistor and got 12 volts out of it. it was not reducing the voltage coming from the other end of the resistor it was same as battery voltage. is that normal even when hooked up to the coil positive side, and coil negative side to distributor ? thanks
Napa ignition coil resistor

W_B · Feb 19, 2015

(quoted from post at 13:48:07 02/17/15)
Check on the 8n board, lots of 12v users there.

Richard, did you post this on the N board? Lots of experts there that can advise on any set up you may want to do and all very willing to help if you are willing to listen. They've never steered me wrong.

old · Feb 19, 2015

LOL your taking the voltage reading incorrectly. On and open circuit you will read battery voltage

Richard 8N · Feb 19, 2015

oh so the points have to be touching or closed at the distributor, this way theirs a load and the resistor will only pass small amounts of current at a time. so when something is demanding lots of current the resistor can't keep up so it brings the voltage down small amounts at a time.

old · Feb 19, 2015

Yes when every thing it hooked up and working volt will be drop but not till then

Richard 8N · Feb 19, 2015

thank you very much I appreciate your help. you gave me more knowledge of how to do it. I will let you know if I need more info. thank you have a good day.

old · Feb 19, 2015

Always happy to help if and when I can and my e-mail is always open for a guy who wants extra help. I have even given out my phone number to help more when needed

Richard 8N · Feb 19, 2015

your the best thank you.

oldtanker · Feb 19, 2015

Richard, I'm a believer in the KISS method. Go to NAPA and get the coil from them that says "no external resistor required" and eliminate just one more part that can fail.

I have 2 front mounts, both converted to 12 volt and both have 12 volt coils. Just one more part to eliminate. One has been converted to electronic ignition and the other will be converted this year. Then my Farmall M is getting IE too. It's converted to 12 volt too.

Just my opinion.

Rick

Richard 8N · Feb 21, 2015

Hi their, I just bought this ignition switch for me to use on the 8n for 12 volt conversion. I decided I will use this ignition switch and start the tractor with it too. I know that the charging alternator wire has to be 10 gauge wire. can you please tell me what gauge wire should I use for the battery terminal, ignition and starter terminals on the switch? I was thinking using all 12 gauge wires to wire up the switch terminals and send the wires to their locations from the switch would that be ok? I also bought the 12 volt starter solenoid I will post the links below. thank you.
ignition switch and starter solenoid

Richard 8N · Feb 21, 2015

Here is the link for the starter solenoid as well thank you.
starter solenoid

old · Feb 21, 2015

12 gauge is over kill for the ignition circuit and 14 gauge will work just fine

Richard 8N · Feb 21, 2015

I am going to use a 14 gauge fusible link to fuse the ignition system. But if I use a 12 gauge nothing will happen its just a thicker wire. right? thanks

old · Feb 21, 2015

Yes you can use 12 gauge and yes it is just a heavier wire that will handle more amps

Richard 8N · Feb 21, 2015

ok thank you very much.

old · Feb 21, 2015

As i have said always happy to help if and when I can. I was a Navy E.T. for 6 years so working with wires was what I was taught to do

Richard 8N · Feb 21, 2015

thank you.

51 8n 12 volt conversion points and condenser

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