So I’ve been rebuilding my ’76 280z for the past few years, and I’m finally onto the carb conversion / ignition stage of the project.
I’ve removed all EFI harnesses from the car and installed a QuickCar rocker panel to control everything on switches. I also installed an MSD Digital 6AL and Blaster 2 Coil. Carbs are Triple Weber 40 DCOE.
I’m having issues getting the car to fire. As of right now, I have ignition power, fuel pump power, starter engagement, and engine cranking. But there seems to be no spark in the cylinders. There IS gas delivery though. This is where I need help…
I have read mixed reviews on how to have the MSD set-up. Orange and Black wires are going to my coil. That’s the obvious one. Then, I have tried both the Magnetic Advance option [hooked up the green and red wires coming out of my electronic 280z dizzy to the green and violet harness from the MSD (also, there’s a third brown wire coming out of the stock dizzy too… where does that go?)], as well as without, functioning off of the white wire from the 6AL going to the positive post on my coil. I have also tested for spark from the coil going to the distributor by removing the coil-to-dizzy wire and grounding the white MSD wire to arc a current. That works when my ignition is switched on, without cranking. Also had my buddy check a spark plug WHILE cranking, and he said the plug had no spark...
So what am I missing? Everything given my knowledge of basic wiring saw this as being pretty straight-forward, but right now I am totally at a loss. Expecting to hear that I’m overlooking something simple / stupid in my haste to get this car started, but I really can’t figure this out!
I’ve attached a few pictures to situate you guys a little better: