As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHIPPING PLUG WAS REMOVED PRIOR TO INSTALLATION OF PROPELLER ON A ZERO TIME FACTORY REBUILT ENGINE. INSIDE OF THE CRANKSHAFT BORE, A SLIVER OF METAL WAS FOUND. ENGINE INSTALLATION WAS STOPPED. ENGINE MFG WAS CONTACTED FOR FURTHER EVALUATION AND RECOMMENDATIONS. THE FACTORY IDENTIFIED THE METAL AND PREPARED A CONTINUED AIRWORTHINESS RECOMMENDATION PROCEDURE.