# Piston-to-cylinder clearance (NA8)

Canonical URL: https://miatatorque.com/spec/piston-cylinder-clearance-na8/

Applicability: NA 1994–1997 (BP) — Other years inferred from 1994 factory evidence.

Confidence: fsm

Clearance: 0.032—0.059mm {0.0013—0.0023 in}
Maximum: 0.15mm {0.006 in}

Always confirm against your factory manual. Match every restriction and follow all stages and procedure notes. Disputed claims must not be automatically resolved. The complete record below preserves every printed unit, source claim and procedure.

```json
{
  "id": "piston-cylinder-clearance-na8",
  "name": "Piston-to-cylinder clearance (NA8)",
  "aliases": [],
  "applies_to": [
    {
      "gen": "NA",
      "years": [
        1994,
        1997
      ],
      "engines": [
        "BP"
      ],
      "note": "Other years inferred from 1994 factory evidence."
    }
  ],
  "kind": "non-torque",
  "value_text": "Clearance: 0.032—0.059mm {0.0013—0.0023 in}\nMaximum: 0.15mm {0.006 in}",
  "procedure": {
    "notes": "Use the explicitly printed clearance range; do not derive another range from diameter table endpoints. If excessive, replace piston or rebore for oversize pistons."
  },
  "confidence": "fsm",
  "sources": [
    {
      "source": "fsm-1994",
      "page": "B–55 (PDF p. 92)",
      "as_printed": "Clearance: 0.032—0.059mm {0.0013—0.0023 in}\nMaximum: 0.15mm {0.006 in}",
      "verified_years": [
        1994,
        1994
      ],
      "document": {
        "id": "fsm-1994",
        "tier": 1,
        "title": "1994 Mazda MX-5 Miata Workshop Manual",
        "covers": [
          {
            "gen": "NA",
            "years": [
              1994,
              1997
            ],
            "engines": [
              "BP"
            ]
          }
        ],
        "note": "Mazda's base manual for 1994–97; later model years got supplements, which we haven't checked yet."
      }
    }
  ],
  "jobs": [],
  "system": "engine",
  "component": "inventory-pass-2026-10",
  "componentName": "Service measurements and fasteners",
  "sequence_diagrams": [],
  "url": "https://miatatorque.com/spec/piston-cylinder-clearance-na8/"
}
```