Posted by JonnyB on February 12, 2015 at 18:21:54 from (64.130.174.249):
I am changing over to electronic ignition & 40,000V coil. I have a 12V system. Can anyone tell me what to gap the plugs at for best all-round performance? I have only seen one comment in another forum that said .045-.060 is best, but it was for a different tractor, and this sounds too generically automotive V8 to me. Thanks in advance for any advice.
Thank you everyone for the great advice. My plug wires aren't completely new, but they are still very good, premium wires and my plugs (.025 factory), cap and rotor are brand new. Cross-fire was one of the things that I thought about when I stated that I thought it sounds generically V8, because I sensed that this old systems engineering didn't take into account this possible upgrade. Thank you all again for the great advise. This is going to speed my tuning experiments tremendously.
This post was edited by JonnyB at 04:46:38 02/13/15 2 times.
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Today's Featured Article - Third Brush Generators - by Chris Pratt. While I love straightening sheet metal, cleaning, and painting old tractors, I use every excuse to avoid working on the on the electrics. I find the whole process sheer mystery. I have picked up and attempted to read every auto and farm electrics book with no improvement in the situation. They all seem to start with a chapter entitled "Theory of Electricity". After a few paragraphs I usually close the book and go back to banging out dents. A good friend and I were recently discussing our tractor electrical systems when he stated "I figure it all comes back to applying Ohms Law". At this point
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