SOOO this whole project started a while ago before I even joined Mud. I bought a 71 that is solid and a 79 that had a fiberglass body on it and was kinda worn out. I was just gonna strip all the mechanical stuff off the 79 and put them in the 71. At least that was the plan until I stripped everything useful off the 79 and found it to be much worse than I even imagined. I should have known something was up when I discovered that the body was 5 inches off of center and was attached in places to the frame with wood screws.
Anyway I took everything off of it and decided it all needed to be rebuilt first. The rusted out frame and terrible fiberglass body was sent off to the wrecker. That is when the scope creep started to settle in. It started with wanting fuel injection, but not wanting to use a GM computer and grew from there.
So I started out with a pre-built MegaSquirt 2 v3.0.
MegaSquirt - Wikipedia, the free encyclopedia. When I got it I decided to use the MS2/Extra code
MS2/Extra Manual Index rather than the standard MS2 code as it gave me more flexability in what I could do. I am going to use a standard GM/Rodchester 4.3 liter Throttle Body, a 3fe distributor for crank postision sense, and let the the MS2/Extra handle the spark timing driving the coilpack off of a Ford EDIS-6.
Ford EDIS - Wikipedia, the free encyclopedia
This meant that I needed to make a few minor modifications to my standard MS2. First I needed to add a second VR ciruit. This documented here
MS2-Extra Nippondenso CAS Manual and for more specifics of what I did, you can look here
MSx/Extra EFI • View topic - New Drawings for the Nippondenso CAS
Second, I needed to wire up the MS2 so that it could directly fire each coil in the coil pack. That is documented here
MS2-Extra Ignition Hardware Manual
I deviated from what is stated there in 2 ways. First, I bought this kit
Glen's Garage and the 2 additional ignition circuits that I needed.
Glen's Garage Second, I didn't eliminate the LEDs on the front to put in the DB15, I just cut a hole above the LEDs. I also did not eliminate the LEDs either... I thought it would be nice to have the LEDs blink when when they fired each coil.
I will attach pictures highlighting the mods I made shortly.