# Connecting rod bushing to piston pin clearance (NA6)

Canonical URL: https://miatatorque.com/spec/connecting-rod-pin-clearance-na6/

Applicability: NA 1990–1993 (B6) — Other years inferred from 1990 factory evidence.

Confidence: fsm

Clearance: 0.010–0.027 mm (0.0004–0.0011 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": "connecting-rod-pin-clearance-na6",
  "name": "Connecting rod bushing to piston pin clearance (NA6)",
  "aliases": [],
  "applies_to": [
    {
      "gen": "NA",
      "years": [
        1990,
        1993
      ],
      "engines": [
        "B6"
      ],
      "note": "Other years inferred from 1990 factory evidence."
    }
  ],
  "kind": "non-torque",
  "value_text": "Clearance: 0.010–0.027 mm (0.0004–0.0011 in)",
  "procedure": {
    "notes": "Use the measured connecting-rod bushing inner diameter and piston-pin outer diameter; distinct from the piston-to-pin clearance."
  },
  "confidence": "fsm",
  "sources": [
    {
      "source": "fsm-1990",
      "page": "B–57 (PDF p. 84)",
      "as_printed": "Clearance: 0.010—0.027mm (0.0004—0.0011 in)",
      "verified_years": [
        1990,
        1990
      ],
      "document": {
        "id": "fsm-1990",
        "tier": 1,
        "title": "1990 Mazda MX-5 Miata Workshop Manual",
        "part_number": "1193-10-89C",
        "covers": [
          {
            "gen": "NA",
            "years": [
              1990,
              1990
            ],
            "engines": [
              "B6"
            ]
          }
        ],
        "url": "https://archive.org/details/1990-mazda-mx-5-miata-workshop-manual_202411"
      }
    }
  ],
  "jobs": [],
  "system": "engine",
  "component": "inventory-pass-2026-10",
  "componentName": "Service measurements and fasteners",
  "sequence_diagrams": [],
  "url": "https://miatatorque.com/spec/connecting-rod-pin-clearance-na6/"
}
```