Mazda MX-5 Miata Sport 2007 Manual page 49

2006-08 ENGINE Mechanical - Overhaul - 2.0L (LF) & 2.3L (L3) - Mazda6 & MX-5 Miata
Top: 0.03-0.08 mm {0.0012-0.0031 in}
Second: 0.03-0.07 mm {0.0012-0.0027 in}
Oil: 0.03-0.07 mm {0.0012-0.0027 in}
Piston ring-to-ring groove clearance (Maximum)
Top: 0.17 mm {0.0067 in}
Second, Oil: 0.15 mm {0.0059 in}
Fig. 49: Measuring Piston Ring-To-Ring Groove Clearance
Courtesy of MAZDA MOTORS CORP.
4. Insert the piston ring into the cylinder by hand and use the piston to push it to the bottom of the ring
travel.
5. Measure each piston ring end gap with a feeler gauge.
If it exceeds the specification, replace the piston, piston pin, piston ring and connecting rod as a

single unit.
2007 Mazda MX-5 Miata Sport