What would be the likely cause(s) this severe bearing failure? 2.0L NA Mazda MZR engine. Stock bearing. Road race application. This was a "good" rod. The "bad" rod came out in about 6 pieces with blue big end parts. I'm thinking high oil temps that caused the oil to give up, thoughts? It's not uncommon to see oil temps above 300*F in different engines in the same application. No temp gauge was on this particular engine.