Hello chaps.
sorry for the delayed response, I’ve been off forum for a while and just getting back in the saddle on all things Z!
So, would I recommend 123 ignition? DEFINITELY! It’s really grown on me - that is once I got past the poor quality caps and started using the Bosch ones.
speeduino is definitely a better proposition but if my understanding is correct, it’s not plug and play in the same way. Is that right
@jonbills ? I recall you doing a fair bit of soldering etc but have things changed since?
As for sharing my curves (!) - I like Atomans curve a lot!! In fact I will steal it and experiment. Mine is a lot more conservative for now - for various reasons I won’t go into for brevity - and has some bumps where I have been experimenting with reducing the effects of reversion through my carbs (please don’t laugh at it, it’s rough). As he said, it’s very much still a work in progress! I have an additional bump at the beginning of the curve as an anti-stall.
Note that mine is now set at 10 degrees static timing to allow for easier cold start so you have to add 10 degrees to all my mech advance numbers.
My vac curve is very mild also but that’s because I’m paranoid about knock and wanted to start safe, especially as I can, in certain situations, run very rich (13 or less) at cruise around the reversion points of the rev range! That’s why it’s starting at 3500 rpm.
This vac curve mimicks the stock dizzy curve but with about 10 degrees shaved off it! once I finish my carb tuning / needle experimenting antics, I’ll focus more on fine tuning the timing.
Incidentally, I found anything more than 16 degrees at idle (1k on mine) caused running on when switched off after a long period of idling. It was clearly causing too much heat. I NEVER get run-on now.
@atomman - what is the compression and cam on that L28?