Got the dizzy opened up today and as expected the coil was absolutely knackered. So out that came, new coil, ignition module and rotor arm.
Ignition module comes with thermal paste to be applied between it and the heat sink which is removed from the old module.
New rotor arm. You may or may not notice that the dust cover behind the rotor arm is missing, I had to break it to get the old rotor off which was totally corroded on the shaft. All cleaned up and greased before fitting new one. And Allen keys instead of the shitty JIS screws.
Have a new dust cover and dizzy cap on the way but the above cured the problem and it fired up straight away. No videos or anything as I was somewhat pre occupied, got the timing light on it and set the dizzy up to 16 degrees.
Runs really nice, not too loud more induction than anything. First time out of the garage under its own steam ...
Clutch feels good and it's not too difficult pulling away with such a light flywheel on.
Just need to get the bloody coolant system bled now, it's taken 7.5 litres but Google tells me an MGF holds about 10.5... So based on that loose nugget of info with it being a similar layout, there's still a lot of air in there!!