Voltage drop at coil.

[WK-WA]

Purchased an Atlantic conversion kit (6v to 12v)from this site and installed it on a 2n. When I did a systems check the voltage at the coil was around 8 volts. I used their resistor (that came with the kit) and the resistor assembly already on the tractor (per directions).
It seems to me that 8volts is a little low.
Also, as there is no spark to the plugs that may indicate I may have another problem (points, condenser,etc).
Ideas, advice, comments???
Thanks in advance, Wayne

 

[souNdguy]

you failed to give all the pertinant data.. what coil are you using.

the older OE style coil for 6v.. or a newer coil marked for use with 12v.. like a 2.5 ohm job?

if the old coil... you use both resistors. if a new coil.. just the oe resistor.

to check points opening and closing.. put a testlamp inline with the coil and spin engine over.. if lamp blinks.. points are opening and closing.

 

[WK-WA]

Have to believe that the kit came with a 12 volt coil. So I should not use the resistor that came with the kit?
Wayne

 

[souNdguy]

yup....

 

[Royse]

(quoted from post at 21:01:12 08/30/13) Have to believe that the kit came with a 12 volt coil. So I should not use the resistor that came with the kit?
Wayne

Have to make sure what you have first. Is the coil marked?
Or at least the package? 12V coil needs only the OE resistor as stated.
In either case, with the points [b:b29104cff9]open[/b:b29104cff9] you should read battery voltage at the top of the coil.

 

[HCooke]

If you used the coil that came with the kit, and IF it is a "12 volt coil" you do not need the second resistor. Just use the OEM resistor.

 

[finishsuper]

I just went through the exact process that you are going through, on my father's 2N. Same kit, same process. Got lots of good advice and help here, and in no time I was up and running.

Here are some highlights of the expert help, that most aided me:

Google "JMOR wiring diagram" and get a copy of the one that fits your conversion. Follow this exactly.

All of your connections need to be [b:2877b4a414]tight[/b:2877b4a414] (This is what got me- 1 little wiggly wire and my voltage was off at the coil, and hence, no spark. A little snugging and she fired white hot on the plug I pulled, and immediately fired up on 3 cylinders)

Start checking your voltage at the battery and work downstream, recording every reading.

To make sure you get a "points open" reading on your coil, disconnect it and hold it in your hand. With key on, read the top screw and then the pigtail, and then the flat ribbon.

If you are reading battery voltage right up to this point, and still have no spark, you now know that your problem is points/distributor to the plug.

Systematic troubleshooting streamlines your process and prevents you from having to go back over stuff you already eliminated.

I'm no expert and don't claim to be. I got some good help here on the exact same problem, and hope I can pass on some of that goodness to you as well. Best of luck.