Fuel Injector Bore Repair

A cylinder head assembly comprising:

• a cylinder head configured to receive a fuel injector comprising:
• a body defining a bore having a longitudinal axis and configured to receive a fuel injector;
• the body also defining a large diameter portion of the bore, a small diameter portion of the bore and an intermediate diameter portion of the bore disposed axially between the large diameter portion of the bore and the small diameter portion of the bore, the body further defining a machined chamfered portion extending axially from the large diameter portion of the bore to the intermediate diameter portion of the bore;
• wherein the body further defines a machined step disposed axially between the large diameter portion of the bore and the machined chamfered portion of the bore;
• and
• a fuel injector disposed in the bore of the cylinder head.

A method for remanufacturing or repairing a cylinder head having a bore configured to receive a fuel injector, the method comprising:

• machining a portion of a surface forming the bore to remove imperfections;
• inserting a repair component into the bore proximate the machined portion of the bore;
• and
• spraying material into the bore proximate the machined portion and the repair component, thereby holding the component into place.