# Dynamic chamber bracket bolts (NB1)

Canonical URL: https://miatatorque.com/spec/dynamic-chamber-bracket-bolts-nb1/

Applicability: NB 1999–2000 (BP-4W) — 2000 applicability inferred from 1999 factory evidence within the owner-approved NB1 year group.

Confidence: fsm

70–95 in·lb / 7.9–10.7 N·m

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": "dynamic-chamber-bracket-bolts-nb1",
  "name": "Dynamic chamber bracket bolts (NB1)",
  "aliases": [],
  "applies_to": [
    {
      "gen": "NB",
      "years": [
        1999,
        2000
      ],
      "engines": [
        "BP-4W"
      ],
      "note": "2000 applicability inferred from 1999 factory evidence within the owner-approved NB1 year group."
    }
  ],
  "kind": "torque",
  "torque": {
    "nm": [
      7.9,
      10.7
    ],
    "kgfcm": [
      80,
      110
    ],
    "inlb": [
      69.5,
      95.4
    ]
  },
  "procedure": {
    "notes": "Snug both bolts, then tighten the dynamic chamber side bolt before the fuel distributor side bolt (01–13–3 / PDF p. 229)."
  },
  "confidence": "fsm",
  "sources": [
    {
      "source": "fsm-1999",
      "page": "01–13–2",
      "as_printed": "7.9—10.7 N·m {80—110 kgf·cm, 69.5—95.4 in·lbf}",
      "verified_years": [
        1999,
        1999
      ],
      "torque": {
        "nm": [
          7.9,
          10.7
        ],
        "kgfcm": [
          80,
          110
        ],
        "inlb": [
          69.5,
          95.4
        ]
      },
      "document": {
        "id": "fsm-1999",
        "tier": 1,
        "title": "1999 Mazda MX-5 Miata Workshop Manual",
        "covers": [
          {
            "gen": "NB",
            "years": [
              1999,
              2000
            ],
            "engines": [
              "BP-4W"
            ]
          }
        ],
        "url": "https://www.mellens.net/mazda/Mazda-Miata-1999-2001.pdf"
      }
    }
  ],
  "jobs": [],
  "system": "fuel-intake",
  "component": "reaudit-1999",
  "componentName": "Additional factory specifications",
  "sequence_diagrams": [],
  "url": "https://miatatorque.com/spec/dynamic-chamber-bracket-bolts-nb1/"
}
```