I want to ensure wel all are super clear on the video being a poor representation of the amount of movement. The out of balance is probably about 3x what the video picked up.
Seriously.. I would have gone into superduper memory hogger video if I realized it was not represented reasonably.
Ben... you keep mentioning the balancer marks and I agree, that'* the first suspect and exactly what it'* acting like...can you see any reason from those marks that it could possibly or even remotely be off? I wish I could..can't though. (BTW..please answer this one..)
Dan'* first few questions were "is it leaking badly?", "Did you set the balancer marks up correctly?" Once he saw the pics and knew they were my engine..he got very quiet. He'* seen tons of problems and can't seem to provide a suggestion, especially since he knows like we do..the flywheel can only go on one way.
Paul.. Yes, I've removed wire by wire and noticed that cylinder go dead as they were unhooked. All appear to be 100%
What we know on this one..
The balancer is properly aligned in the pictures and nothing changed from the pics to final bolting.
The flywheel bolts started..and I had a gut feeling but ruled it out because it can only go on one way.
If the crank were bent or messed up.. the seals would have to leak.
When the rpm is brought up slightly..things tend to smooth a bit showing it'* balance.
I'm honestly thinking flywheel, if that'* the case I get a prize for achieiving something engineered to be impossible.