Tuesday, October 04, 2016

One More Time! Revising the ignition system

During the AVC race trip I had some persistent roughness in my remaining magneto. When I got home I pulled the engine and the magneto, to find it was in need of an overhaul. I am tired of pulling the engine to inspect the mag and it has only gotten worse with the addition of the fuel injection given all the extra wires.

My friend Lyn French has been running the same EC2/EC3 system as I have and he eliminated the second mag a couple of years ago, so I figure it's time for me.  According to Lyn, I just need to add a second set of coils, hook up some wires and I'm good to go.  Naturally, easier said than done.  

Here is a photo of Lyn's installation of the upper spark plug coils.  He ganged the four coils together and mounted them of top of his plenum.  He was able to do this since his plenum doesn't cover the whole crankcase.


Here is my plenum setup. Notice it covers the entire crankcase since I wanted to provide as much cooling as possible. Since there isn't any room left in the engine compartment I'm somehow going to have to figure out how to mount the coils under my plenum.