1D-68 Engine Mechanical:
Specifications
Service Data
B649G11407002
Valve + Guide
Unit: mm (in)
Camshaft + Cylinder Head
Unit: mm (in)
Item Standard Limit
Valve diameter
IN. 28.5 (1.12) —
EX. 25 (1.0) —
Valve clearance (when cold)
IN. 0.10 – 0.15 (0.004 – 0.006) —
EX. 0.18 – 0.23 (0.007 – 0.009) —
Valve guide to valve stem clearance
IN. 0.020 – 0.047 (0.0008 – 0.0019) —
EX. 0.040 – 0.067 (0.0016 – 0.0026) —
Valve stem deflection IN. & EX. — 0.35 (0.014)
Valve guide I.D. IN. & EX. 5.000 – 5.012 (0.1969 – 0.1973) —
Valve stem O.D.
IN. 4.965 – 4.980 (0.1955 – 0.1961) —
EX. 4.945 – 4.960 (0.1947 – 0.1953) —
Valve stem runout IN. & EX. — 0.05 (0.002)
Valve face thickness IN. & EX. — 0.5 (0.02)
Valve stem end length IN. & EX. — 2.5 (0.10)
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.)
INNER — 35.0 (1.38)
OUTER — 37.8 (1.49)
Valve spring tension (IN. & EX.)
INNER
53 – 65 N (5.3 – 6.5 kgf, 11.7 – 14.3 lbs)
at length 28 mm (1.10 in)
—
OUTER
131 – 151 N (13.1 – 15.1 kgf, 28.9 – 33.3 lbs)
at length 31.5 mm (1.24 in)
—
Item Standard Limit
Cam height
IN. 33.58 – 33.62 (1.3220 – 1.3236) 33.28 (1.3102)
EX. 32.65 – 32.69 (1.2854 – 1.2870) 32.35 (1.2736)
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. 22.012 – 22.025 (0.8666 – 0.8671) —
Camshaft journal O.D. IN. & EX. 21.959 – 21.980 (0.8645 – 0.8654) —
Camshaft runout IN. & EX. — 0.10 (0.004)
Cam chain pin (at arrow “3”) 24th pin —
Rocker arm I.D. IN. & EX. 12.000 – 12.018 (0.4724 – 0.4731) —
Rocker arm shaft O.D. IN. & EX. 11.973 – 11.984 (0.4714 – 0.4718) —
Cylinder head distortion — 0.20 (0.008)
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