I still have the modified reluctor That will move the rotor forward 5, 10, or 15 degrees.
Looking at the picture of the rotors position with vacuum advance while zoomed in on it close I
Guess the rotor could come forward a little more, I’d guess maybe 5-10 degrees.
I just don’t know if that’s going to solve the issue or not.
But I can give it a try easily enough.
Last time I tired moving the position of the rotor I made my own slot on an old reluctor which moved the rotor a little too far forward, probly around 20-25 degrees and that made the missing worse at 2500.
That was before I got the modified reluctor from ehernberg.
I’m not an expert on rotor phasing and I’m not sure if rotor phasing can cause a missfire on all 8 cylinders or not.
Maybe at 2500 rpm the rotor is being pulled back a little bit further then what the picture shows when it’s idling and that’s whats causing the missfiring.
The most interesting part of this issue to me is how taking the vacuum advance away seems to clean it up.
So again that leads me back to rotor phasing.