Jiffy,
The ICE wiring details that you must NOT use a ballast resistor circuit, their system needs full voltage.
Edz,
have you talked to ICE ignition about how to correctly wire an MSD atomic in with their system ? Reading the instructions on the MSD there are some wiring concerns about how to connect the coil dependant on what sort of ignition you are running. It does say failure to setup correctly could damage the MSD ECU. Id be checking with Michael and the guys at ICE , you may have wired the MSD atomic up incorrectly.
Mark
Checked the coils I have and they are non-resistor type.
I've given up on the points dizzy.
Talked to Michael when I first had problems and he suggested I try the Bosch coil I had (pic below of the type I tried). I wanted to make sure it wouldn't damage the ICE ignition computer.
The ICE is very easy to wire, two wires labelled for the coil, one 3 pin plug for the distributor and an earth wire that must go to the engine. There are 2 other wires on mine for tacho and two-step rev limiting.
I initially thought it might be the harness I had wired in so now all my testing is with a brand new, spare harness I have and no change.
I'm connecting the coil/ICE Ignition power feed to a direct feed from the battery.
I've pulled the dizzy and connected it to a sparkplug that was sitting out and earthed.
If I connect it to the coil and spin the dizzy, I get a continuous series of fat sparks (the coil/box uses 7 amps).
If I just connect the plug to a lead from the dizzy, I get a single spark every rotation.
Now the dizzy is in, I still get the single spark for each rotation during cranking.
Now that I've put it all back, when I kick it in the guts, it fires up once each time and then shuts off straight off. I can hear the fuel pump kick in and shot off when the computer turns it off.
At least now I get spark all the time.
I checked the diagnostics on the MSD hand controller and it says all ok?