NSX V6-3.2L DOHC (VTEC) (1997)
Piston Ring: Service and Repair
Replacement
1. Using a ring expander, remove the old piston rings.
2. Clean all ring grooves thoroughly.
NOTE:
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Use a squared-off broken ring or ring groove cleaner with blade to fit piston grooves.
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Top and 2nd ring grooves are 1.2 mm (0.05 inch) wide and the oil ring groove is 2.5 mm (0.10 inch) wide.
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File down the blade if necessary.
CAUTION: Do not use a wire brush to clean the ring grooves, or cut ring grooves deeper with a cleaning tool.
3. Install new rings in the proper sequence and position.
NOTE: Do not reuse old piston rings.