1. Using a piston, push a new ring (A) into the cylinder bore 15−20 mm (0.6−0.8 in.) from the bottom. Measure the piston ring end-gap (B) with a feeler gauge: If the gap is too small, check to see if you have the proper rings for your engine. If the gap is too large, recheck the cylinder bore diameter against the wear limits. If the bore is over the service limit, the engine block must be rebored.
   Piston Ring End-Gap
   Standard (New): | 0.20−0.35 mm (0.008−0.014 in.)
   Service Limit: | 0.60 mm (0.024 in.)
   K20A6 Engine:
   Standard (New): | 0.40−0.55 mm (0.016−0.022 in.)
   Service Limit: | 0.70 mm (0.028 in.)
   K24A3 Engine:
   Standard (New): | 0.50−0.65 mm (0.020−0.026 in.)
   Service Limit: | 0.75 mm (0.030 in.)
   K20A6 Engine:
   Standard (New): | 0.25−0.65 mm (0.010−0.026 in.)
   Service Limit: | 0.75 mm (0.030 in.)
   K24A3 Engine:
   Standard (New): | 0.20−0.70 mm (0.008−0.028 in.)
   Service Limit: | 0.80 mm (0.031 in.)