Is your graph showing dizzy advance or crankshaft advance?
These are crank values. I measured it on my distributor machine and mutiplied by 2 for the graph. The engine is restored but remained a standard 850, the car is still in the paintshop but I would like to prepare myself
Timing is set at full advance figure, if your engine needs 28degrees to achieve max power, then time it at 28degrees at 5000rpm. The lost motion in the engine and the advance curve shape will determine where the static advance ends up.
Basically you don't time an engine at idle.
I know this but I will need a basic setup for the 1st start.
Theoretically : if the engine is happy with 28 d's max advance, but the dizzy produces 30 d's it should be adjusted to 2 d's static ATDC ?
In practice I should limit the max advance by 2 d's at least ?
The static timing for an 850 with the 41026 was tdc. The max centrifugal advance for a 41026 is 34 crankshaft degrees. Thus the max centrifugal advance for an 850 is 34 crankshaft degrees, Give the max advance evident on your new distributor appears to be 30 crankshaft degrees, it would be a good idea to add a small amount of static timing advance, say 3 degrees to ensure your max timing remains within the envelope you show for the works advance curves.
I have no chance to send my dizzys to you from Hungary, I wish I could
