Honda Engine >> CYLINDER BORING/HONING CAUTION FOR 2.3L ENGINES

Honda Engine >> CYLINDER BORING/HONING CAUTION FOR 2.3L ENGINES

Cylinder Boring/Honing Caution For
1992-96 Honda 2.3L Engines

The AERA Technical Committee offers the following information on a cylinder boring/honing caution for 1992-96 Honda 2.3L engines. This engine is used in their Prelude vehicles and uses a fiber-reinforced metal (FRM) in the cylinder bores. Those bores are also a nonferrous metal and require special attention during the oversize operations.

During manufacturing, a rigid hone using a GC-600-J or finer stone designed for nonferrous metal was used to finish hone the cylinder bores. Honing pressure should be adjusted to 29-43 psi (200-300 kpa), while the hone head is rotating at 45-50 rpm. The desired crosshatch pattern is 60° for a proper piston ring seal. To prevent stone loading and debris build-up, cleaning the stones every five cycles is recommended.

After the bores have been honed to final size, the block should be cleaned with hot, soapy water and then dried. A cleaning solvent is not advised as it has a tendency to only redistribute honing grit.

Aftermarket honing stone suppliers have found using a silicon carbide, 400 grit stone provides the desired finish and crosshatch required for this cylinder block.

The AERA Technical Committee

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