# Crankshaft journal out-of-round (NA8)

Canonical URL: https://miatatorque.com/spec/crankshaft-journal-out-of-round-na8/

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

Confidence: fsm

Main journal
Out-of-round: 0.05mm {0.0020 in} max.
Crankpin journal
Out-of-round: 0.05mm {0.0020 in} max.

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": "crankshaft-journal-out-of-round-na8",
  "name": "Crankshaft journal out-of-round (NA8)",
  "aliases": [],
  "applies_to": [
    {
      "gen": "NA",
      "years": [
        1994,
        1997
      ],
      "engines": [
        "BP"
      ],
      "note": "Other years inferred from 1994 factory evidence."
    }
  ],
  "kind": "non-torque",
  "value_text": "Main journal\nOut-of-round: 0.05mm {0.0020 in} max.\nCrankpin journal\nOut-of-round: 0.05mm {0.0020 in} max.",
  "procedure": {
    "notes": "Both main journals and crankpins have the same printed limit."
  },
  "confidence": "fsm",
  "sources": [
    {
      "source": "fsm-1994",
      "page": "B–57 (PDF p. 94)",
      "as_printed": "Main journal\nOut-of-round: 0.05mm {0.0020 in} max.\nCrankpin journal\nOut-of-round: 0.05mm {0.0020 in} max.",
      "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/crankshaft-journal-out-of-round-na8/"
}
```