How did nitrous get such a bad rep...?

I'm pretty sure the 1st (aka worst) engine would be a sacrificial lamb. Just for fun (see what it will take) engine number 2 would have new rings gapped for the sauce and use the knowledge from engine number 1 to survive at least 2 hours.
So you could ever have a sacrificial motor to learn from or spend the money on preventive parts to begin with?..