Yes, before modifying, found several maybe's but no definite answer. Finally disconnected the link and no more problems, didn't set any codes after removing link.
After seeing your posting a couple years ago I replaced with 50-55 bolts high strength, happy I did. I was replacing flywheel, roller bearing and lifter shaft with updated parts after reading another of your posts. I wasn't happy with the existing old style setup.
Once you have chain separated from gear take a real hard look, if a small piece of gear got wedged between the gear and the chain something has to give.
Hate this happened to you but thankful you caught it before more serious issues happened. Is that the standard key and keyway or did you increase the size. I've replaced mine a time or two, but I can't remember the size. Think I still have them in parts cabinet. Like the idea of pictures for...
I drag raced gassers from 61-mid 80's. Started with small block Chevy's and stayed with this until early 70's. That's when I built my last car, a 55chevy with a 427 big block with all the bells and whistles. Then built a truck with slide back bed to haul it. My sons wanted to play sports, they...
Adding power will always show the weak link. Keep improving to find next weak link. I'm sure adding nitrous will show up several weak spots, but what a rush.
Where it separated is the weakest part of the gear, as long as key fits tight in keyways don't believe you could roll it out, although you could shear the key. We are just speculating.
Are your spring pressures so high, faulty gear, valve timing slip and valves hitting pistons, what have you concluded caused this. Could harmonics thru balance shaft cause this? Did you have a reason to go into engine or were you plain ol lucky.