Jump to content

Vote for Tractor of the Month
Garden Tractors and Parts on eBay

- - - - -

Converting An Onan Twin To A Single Output Coil

  • Please log in to reply
2 replies to this topic

#1 DrBob762 OFFLINE  

  • Member
  • Member No: 54859
  • 3 Thanks
  • 6 posts
  • Location: Ar

Posted March 31, 2014 - 06:03 AM

my 1975 SS 16 has a bad ignition coil, and i am working on the idea of using one of many single output coils i have on hand. The issue i have is how to effectivly insulate the junction of the spark plug wires into one lead that can be inserted into the high voltage tower on the coil. previous  attempts have shown that standard electrican's tape is not up to the task.(at least in my attempts) Any outher thoughts on how to effectivly insulate this junction will be appricated.....DrBob762.

  • boyscout862 said thank you



    God Bless Those Who Served

  • Staff Admin
  • Staff
  • -GTt Supporter-
  • Contributor
  • Member No: 802
  • 26,654 Thanks
  • 28,312 posts
  • Location: N. W. PA

Posted March 31, 2014 - 07:06 AM

Silicon Glue with thick wall heat shrink should work... But I'm afraid you will have intermittent problems.
Electricity will take the path of least resistance, the cylinder NOT under compression would have less resistance at the plug, so the spark will possibly go there instead of the cylinder that should fire. It might work once in a while, but changes in humidity, heat, mix, etc could cause it not to work right or not be consistent.

You would be better off to do two small coils IMHO. I have thought the same about motorcycle coils or something. Someone said that a dual output Harley coil will work, might look into that. They would be two coils in one case, not one coil split.
  • boyscout862, superaben and DrBob762 have said thanks

#3 searstractorfan OFFLINE  

  • Senior Member
  • Member No: 53452
  • 122 Thanks
  • 158 posts
  • Location: Eaton, Ohio

Posted April 28, 2014 - 10:03 AM

2 Bosch super blue coils or look for Harley coils...

Sent from my iPhone using Tapatalk