NSX V6-3.2L DOHC (VTEC) (1997)
Piston: Testing and Inspection
INSPECTION
1. Check the piston for distortion or cracks.
NOTE: If cylinder is bored, an oversized piston must be used.
2. Measure piston diameter at a point 17 mm (0.67 inch) from the bottom of the skirt.
NOTE: There are two standard-size pistons (A = no letter and B). The letter is stamped on the top of the piston. These letters are also stamped on
the black as cylinder bore sizes.
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Piston A (no letter) Diameter
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Standard (New): 92.990 - 93.003 mm (3.6610 - 3.6615 inch)
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Service Limit: 92.97 mm (3.6602 inch)
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Piston B Diameter
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Standard (New): 92.980 - 92.993 mm (3.6606 - 3.6611 inch)
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Service Limit: 92.96 mm (3.6598 inch)
3. Calculate the difference between cylinder bore diameter and piston diameter.
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Piston-to-Block Clearance
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Standard (New): 0.007 - 0.030 mm (0.0002 - 0.0012 inch)
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Service Limit: 0.0785 mm (0.0031 inch)