Now, she's out...
Well, either Friday the 13th or Randy's bad Ju-Ju got me. lol. Not a blown engine, but my SDS belt shredded, got caught up in the power steering belt at the crank, and caused the timing belt to jump a few teeth.
Using my baroscope I confirmed what I had hoped didn't happen: the exhaust valves 'touched' the piston crowns. I could see slight, clean, indentations on the piston crowns, and black-brownish smears on the valves themselves. Damn this interference motor! Heads are coming off this weekend, going to Greg where his guy can turn them around in a week.
Jbasol had a similar thing happen to him when his harmonic balancer went out. He repaired the heads and just cleaned up his stock bottom end. As long as there is no profound damage to the crowns, I plan on doing the same. We'll check other clearances to make sure the damage is localized.
I'm looking to be back up and running before this month is out. Funny, I didn't think a shredded belt would take me out. :scratch: Oh well... Plenum is already off, SDS is next... time to get back in the garage.