Showing specs for all NA & NB Miatas

Piston ring-to-land clearance (NA8)

Clearance Top: 0.0012—0.0025 in (0.03—0.065 mm) Second: 0.0012—0.0027 in (0.03—0.07 mm)Clearance Top: 0.03—0.065mm {0.0012—0.0025 in} Second: 0.03—0.07mm {0.0012—0.0027 in}

Factory manualTaken from a Mazda factory workshop manual, with page citation.
Procedure

Measure around entire circumference using a NEW piston ring. Replace piston if excessive.

Applies to
  • NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.
  • Verified in: 1994 Mazda MX-5 Miata Workshop Manual

Sources (1)

View 1 source citations
  • 1994 Mazda MX-5 Miata Workshop ManualTier 1
    Page B–55 (PDF p. 92) · Printed value & notes
    Page B–55 (PDF p. 92)
    Printed: “Clearance Top: 0.03—0.065mm {0.0012—0.0025 in} Second: 0.03—0.07mm {0.0012—0.0027 in}”