Table 2 ENGINE TOP END SPECIFICATIONS (continued)
Item
New mm (in.)
Service limit mm (in.)
Valve head diameter
Intake
47.0-47.2 (1.850-1.858)
–
Exhaust
39.0-39.2 (1.535-1.543)
–
Valve face width (intake and exhaust)
2.1 (0.083)
–
Valve seat width (intake and exhaust)
1.2-1.4 (0.047-0.055)
1.8 (0.071)
Valve margin thickness
(intake and exhaust)
1.1-1.5 (0.043-0.060)
0.8 (0.031)
Valve seat cutting angle
30°, 45°, 60°
Valve spring free length
44.6 (1.76)
43.5 (1.71)
Valve spring tilt
2.5°/1.9 (0.075)
Cylinder
Bore
1
95.00-95.01 (3.7402-3.7405)
95.1 (3.7441)
Pistons
Outside diameter
2
94.960-94.975 (3.7386-3.7392)
–
Piston-to-cylinder clearance
0.025-0.050 (0.0010-0.0020)
0.15 (0.0060)
Piston off-set
0
–
Piston pin bore inside diameter
22.004-22.015 (0.8663-0.8667)
–
Piston pin outside diameter
21.991-22.000 (0.8658-0.8661)
–
Piston pin-to-piston clearance
0.004-0.024 (0.0001-0.0009)
–
Piston rings
Side clearance (ring-to groove clearance)
Top
0.04-0.08 (0.0015-0.0031)
0.1 (0.004)
Second
0.03-0.07 (0.0012-0.0027)
0.1 (0.004)
Ring thickness
Top
1.5 (0.059)
–
Second
1.2 (0.047)
–
Oil ring
2.5 (0.098)
–
Ring end gap
Top
0.30-0.50 (0.012-0.020)
0.8 (0.031)
Second
0.30-0.45 (0.012-0.018)
0.8 (0.031)
Oil ring
0.2-0.7 (0.008-0.028)
–
1. Measured 40 mm (1.54 in.) from top of cylinder.
2. Measured 5 mm (0.197 in.) from bottom of piston skirt.
Table 3 ENGINE TOP END TORQUE SPECIFICATIONS
Item
N•m
in.-lb.
ft.-lb.
Cam sprocket bolts
55
–
41
Cam sprocket cover bolts
10
89
–
Cam chain drive assembly retainer bolt
10
89
–
Cam chain guide bolt
10
89
–
Cam chain tensioner cap bolt
8
71
–
Cam chain tensioner mounting bolts
10
89
–
Camshaft bushing retainer bolt
20
–
15
Cylinder bolts
10
89
–
Cylinder head cap nut
35
–
26
Cylinder head cover screws
4
35
–
Cylinder head bolts
20
–
15
Cylinder head nuts
50
–
37
Exhaust manifold-to-cylinder head nuts
(rear cylinder)
20
–
15
Exhaust pipe-to-cylinder head nuts (front cylinder)
20
–
15
ENGINE TOP END
131
4
(continued)