Integra Type R Coupe L4-1797cc 1.8L DOHC (VTEC) MFI (2001)
Connecting Rod: Testing and Inspection
Each rod falls into one of four tolerance ranges (from +0.006 to +0.024 mm (+0.0002 to +0.0009 inch), in 0.003 mm (0.0001 inch) increments)
depending on the size of its big end bore. It's then stamped with a number (21, 22, 23, 24, 25 or 26) indicating the range.
You may find any combination of 21, 22, 23, 24, 25 or 26 in any engine.
Normal Bore Size: 48.0 mm (1.89 inch)
NOTE:
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Reference numbers are for big end bore size and do NOT indicate the position of the rod in the engine.
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Inspect connecting rod for cracks and heat damage.