So after setting the cam timing again and reinstalling everything it eventually kicked over and idled very roughly for about 10 seconds.
I also set the valve clearances in the way Max suggested (with one valve open and the other fully closed.
It surged a few times then died and I'm sure it was running off aero starter rather than fuel from the carb.
Is it normal for the starter motor to cut out and then re-engage the flywheel when trying to turn the ignition on? It seemed as though it was making the engine cough when it was doing this....
Last edited by Lockstock; 06/04/21 06:05 PM.