no failure, quite the opposite. it was disassembled to demonstrate how clean and wear-free one of these engines can be at 270k miles, for promotional purposes.
the rod bolts are M9 x 1.0 x 50mm long. Although ARP has something similar, they warned that the new bolts and associated torque/tension would result in an egg-shaped rod bearing. no bueno. I'll take my chances with reusing them.As an aside, I have reused both the head bolts and rod bolts (of necessity). So far, I haven't had any failures, but it is definitely something I've worried about.
I've also looked for suitable replacements for the rod bolts, and came up empty. I'm sure they could be built, but would probably be costly and have a minimum quantity to run.
some pics below. ultrasonic cleaned pistons and block ready for rotating hardware.
i'm cutting rings and will be assembling the short block this weekend.