SERVICE DATA AND SPECIFICATIONS (S.D.S.) — Inspection and Adjustment (Cont'd) — Valve seat
EM-7026spec tableInspection and Adjustment (Cont'd)
Valve seat
Valve seat — INTAKE — Unit: mm (in)
Seat width
Standard1.34 - 1.63 (0.0528 - 0.0642)
Oversize1.34 - 1.63 (0.0528 - 0.0642)
Seat angles
Standard30° / 45° / 60°
Oversize30° / 45° / 60°
Seat depth
Standard4.3 (0.169)
Oversize4.3 (0.169)
Reference diameter 1
Standard25.3 - 25.5 (0.996 - 1.003) dia.
Oversize25.3 - 25.5 (0.996 - 1.003) dia.
Reference diameter 2
Standard27.0 - 27.2 (1.062 - 1.070) dia.
Oversize27.0 - 27.2 (1.062 - 1.070) dia.
Reference diameter 3 *
Standard28.7 - 28.9 (1.129 - 1.137) dia.*
Oversize29.500 - 29.516 (1.161 - 1.162) dia.*
Reference diameter 4 — Oversize only
Standard—
Oversize28.7 - 28.9 (1.129 - 1.137) dia.*
Valve seat — EXHAUST — Unit: mm (in)
Seat width
Standard1.70 - 2.12 (0.0669 - 0.0835)
Oversize1.70 - 2.12 (0.0669 - 0.0835)
Seat angles
Standard10° / 45° / 60°
Oversize10° / 45° / 60°
Seat depth
Standard—
Oversize3.9 (0.153)
Reference diameter 1
Standard22.0 - 22.2 (0.866 - 0.874) dia.
Oversize22.0 - 22.2 (0.866 - 0.874) dia.
Reference diameter 2 *
Standard23.7 - 23.9 (0.933 - 0.940) dia.
Oversize22.500 - 22.516 (0.885 - 0.886) dia.*
Reference diameter 3 — Oversize only
Standard—
Oversize23.7 - 23.9 (0.933 - 0.940) dia.*
NOTE
* Cylinder head machining data.