Piston Inspection: Notes

WARNING: This page is about a different car, the 2005 Mazda MX-5 Miata, 2004 Mazda MX-5 Miata, and 2003 Mazda MX-5 Miata. However, it is still accessible from the selected car via links, so may be relevant.

Measure the outer diameter of each piston at right angle (90 °) to the piston pin, 16.5 mm {0.650 in} below the oil ring groove lower edge.