Make sure you have a Torx 40+ bit before you get the balancer as you will need it to assemble the balancer before you can install it. I had to order it from Summit iirc.
Follow ATI's instructions. Put a light coating of antisieze on the crank snout , use a balancer install tool. If you're using a grade 8 balancer bolt clean out the crank threads with brake cleaner and a pipe brush, apply assembly lube to the threads and torque to 145ft/lbs. Heating up the...
I get that and it's definitely a possibility, but seating a balancer really isn't that difficult so imo there is more to the issue than that. Tough to nail down though because many people who add blowers also change OPG's or the balancer at some point.
Who owned the car seemed irrelevant when I made the original post as I was responding to a question about how these motors hold up to a given amount of boost. I simply stated that my motor handled that boost just fine until the snapped crank ended its life. I assigned no cause to that...
I put about 25k on the blower before I sold it in sept. The crank snapped on the new owner. He recently put OPG's in it and switched to the ARP crank saver stud setup. Everything was installed by a Ford tech so I assume it was done correctly.
My D1SC gen1 was on 16psi and held up just fine until the crank snout snapped off. The internals looked good though. If the fueling and tune are right you should be fine.
I sold my Procharged SLB '13 last month to a guy that dyno'd it and then did OPG's. It was making 775whp and he sent me a pic of the factory gears.... they looked perfectly fine after 50k/mi.
Anecdotal evidence, but evidence none the less.