I wouldn't expect a company to replace something a second time if the same thing happened again, but being the first time.
Do you have any pictures of the probe after the failure? I find it hard to believe it just melted off, only time Ive seen that happen was a 1/16" t-couple being exposed to 1600F+ in an instrumented DPF...
What kind of fittings were used for the thermocouple? How deep was it inserted during install?
If it was pushed all the way in then torqued down, its possible the tip rubbed on the other side of the manifold
No matter how many you build its always possible that there could be an imperfection in any unit.
Same can be said for installations. Not taking sides, just stating facts.
Its a tiny piece of wire with nothing to support it. After the rest of it blew apart it would take no effort to bend it.
Its a tiny piece of wire with nothing to support it. After the rest of it blew apart it would take no effort to bend it.