OVERSIZE TAPPET BORES IDENTIFICATION. Pontiac J2000 1983

For 1990-2009 cars

# OVERSIZE TAPPET BORES IDENTIFICATION

Some Tonawanda built 2.0L L-4 LQ5 engines may have been produced with 0.26mm oversize tappet bores. The oversize tappet bore is identified with a vertical stripe of white paint on both sides of the tappet bore inside the tappet cavity. In addition, the cylinder block has a steel stamp with ".26 OS" on the top right front machining pad. If one of the oversize hydraulic valve lifters requires replacement, use part number 5233545.

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