Engine Mechanical: 1D-81
Specifications
Service Data
B837H11407001
Valve + Guide
Unit: mm (in)
Camshaft + Cylinder Head
Unit: mm (in)
Item Standard Limit
Valve diam.
IN. 27.2 (1.07) —
EX. 22.0 (0.87) —
Valve clearance (when cold)
IN. 0.08 – 0.18 (0.003 – 0.007) —
EX. 0.18 – 0.28 (0.007 – 0.011) —
Valve guide to valve stem clearance
IN. 0.010 – 0.037 (0.0004 – 0.0015) —
EX. 0.030 – 0.057 (0.0012 – 0.0022) —
Valve guide I.D. IN. & EX. 4.500 – 4.512 (0.1772 – 0.1776) —
Valve stem O.D.
IN. 4.475 – 4.490 (0.1762 – 0.1768) —
EX. 4.455 – 4.470 (0.1754 – 0.1760) —
Valve stem deflection IN. & EX. — 0.25 (0.010)
Valve stem runout IN. & EX. — 0.05 (0.002)
Valve seat width IN. & EX. 0.9 – 1.1 (0.035 – 0.043) —
Valve head radial runout IN. & EX. — 0.03 (0.001)
Valve spring free length IN. & EX. — 39.4 (1.55)
Valve spring tension IN. & EX.
Approx. 231 N (23.6 kgf, 51.9 lbs)
at length 33.55 mm (1.321 in)
—
Item Standard Limit
Cam height
IN. 36.18 – 36.23 (1.424 – 1.426) 35.88 (1.413)
EX. 35.98 – 36.03 (1.417 – 1.419) 35.68 (1.405)
Camshaft journal oil clearance IN. & EX. 0.032 – 0.066 (0.0013 – 0.0026) 0.150 (0.0059)
Camshaft journal holder I.D. IN. & EX. 24.012 – 24.025 (0.9454 – 0.9459) —
Camshaft journal O.D. IN. & EX. 23.959 – 23.980 (0.9433 – 0.9441) —
Camshaft runout — 0.10 (0.004)
Cam chain pin (at arrow “3”) 12th pin —
Cylinder head distortion — 0.20 (0.008)
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