I made another video of the ignition timing stability since the last one was blurry. But first the
video with instability in post #2929 .....
In the next video I did not disconnect the vacuum advance, so the actually timing is different,
but the stability is solid.
The only things that I can remember changing is the harmonic balancer and the addition of the
valve stud girdle. Looks like the harmonic balancer made the difference, don't see how the stud
girdle could make that much of a change.
.
video with instability in post #2929 .....
In the next video I did not disconnect the vacuum advance, so the actually timing is different,
but the stability is solid.
The only things that I can remember changing is the harmonic balancer and the addition of the
valve stud girdle. Looks like the harmonic balancer made the difference, don't see how the stud
girdle could make that much of a change.
.