# Tappet-to-bore clearance (Mazdaspeed)

Canonical URL: https://miatatorque.com/spec/tappet-bore-clearance-msm/

Applicability: NB 2004–2005 (BP-Z3-TURBO) — 2004 factory turbo-engine evidence; 2005 inferred within MSM family.

Confidence: fsm

Standard clearance
0.025—0.066 mm {0.00099—0.00259 in}
Maximum clearance
0.180 mm {0.0071 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": "tappet-bore-clearance-msm",
  "name": "Tappet-to-bore clearance (Mazdaspeed)",
  "aliases": [],
  "applies_to": [
    {
      "gen": "NB",
      "years": [
        2004,
        2005
      ],
      "engines": [
        "BP-Z3-TURBO"
      ],
      "note": "2004 factory turbo-engine evidence; 2005 inferred within MSM family."
    }
  ],
  "kind": "non-torque",
  "value_text": "Standard clearance\n0.025—0.066 mm {0.00099—0.00259 in}\nMaximum clearance\n0.180 mm {0.0071 in}",
  "procedure": {
    "notes": "Subtract tappet outside diameter from the corresponding bore diameter."
  },
  "confidence": "fsm",
  "sources": [
    {
      "source": "workshop-bp-turbo-2004",
      "page": "01–10–22 (PDF p. 34)",
      "as_printed": "Standard clearance\n0.025—0.066 mm {0.00099—0.00259 in}\nMaximum clearance\n0.180 mm {0.0071 in}",
      "verified_years": [
        2004,
        2004
      ],
      "document": {
        "id": "workshop-bp-turbo-2004",
        "tier": 1,
        "title": "2004 Mazda Engine Workshop Manual BP (1.8L), normally aspirated and turbo",
        "part_number": "9999-95-EWBP-04",
        "covers": [
          {
            "gen": "NB",
            "years": [
              2004,
              2004
            ],
            "engines": [
              "BP-Z3-TURBO"
            ],
            "trans": [
              "6MT"
            ]
          }
        ]
      }
    }
  ],
  "jobs": [],
  "system": "engine",
  "component": "inventory-pass-2026-10",
  "componentName": "Service measurements and fasteners",
  "sequence_diagrams": [],
  "url": "https://miatatorque.com/spec/tappet-bore-clearance-msm/"
}
```