Patent ID: 8499447

Claim:
A method for repairing an engine cylinder head where a leakage of engine coolant around a coolant inlet port has caused the corrosion and erosion of a sealing surface of the engine cylinder head against which a coolant sealing gasket is seated, so that a new sealing surface is provided for properly seating a replacement gasket, comprising; disassembling an engine cylinder head to expose a corroded and eroded sealing surface that is surrounding a coolant inlet port; machining away the corroded and eroded sealing surface to a selected depth and width to create a newly machined pocket having a bottom wall surface and an annular sidewall surface that surrounds the coolant inlet port; providing an annular insert having an annular outer sidewall, a top wall, a bottom wall, and a central opening, said insert having a thickness that is greater than the depth of the machined pocket; applying an adhesive to either the engine cylinder head within the pocket or to the insert; inserting the insert into the pocket and curing the adhesive so that the insert is permanently adhered within the machined pocket; and after curing the adhesive, machining the top wall of the insert to a dimension that will create a proper gasket surface for the subsequent seating of a replacement gasket.