Hyundai GENESIS COUPE BK 2010 Manual page 130

3. Calculate the difference between the cylinder bore diameter and the piston diameter.
Piston-to-cylinder clearance
0.03 ~ 0.05mm (0.0012 ~ 0.0020in.)
4. Inspect the piston ring side clearance.
Using a feeler gauge, measure the clearance between new piston ring and the wall of the ring groove.
Piston ring side clearance
Standard
No.1 : 0.03 ~ 0.07mm (0.0012 ~ 0.0027in.)
No.2 : 0.03 ~ 0.07mm (0.0012 ~ 0.0027in.)
Oil ring : 0.06 ~ 0.15mm (0.0024 ~ 0.0059in.)
Limit
No.1 : 0.1mm (0.004in.)
No.2 : 0.1mm (0.004in.)
Oil ring : 0.2mm (0.008in.)
If the clearance is greater than maximum, replace the piston.
5. Inspect piston ring end gap.
To measure the piston ring end gap, insert a piston ring into the cylinder bore. Position the ring at right angles to the
cylinder wall by gently pressing it down with a piston. Measure the gap with a feeler gauge. If the gap exceeds the
service limit, replace the piston ring. If the gap is too large, recheck the cylinder bore diameter against the wear
limits. If the bore is over the service limit, the cylinder block must be replaced.
Piston ring end gap
Standard
No.1 : 0.17 ~ 0.32mm (0.0067 ~ 0.0126in.)
No.2 : 0.32 ~ 0.52mm (0.0126 ~ 0.0204in.)