Torque and Service Specifications
CYLINDER HEAD CAMSHAFT BEARING BOREJournals No.1 - 6 26.020 - 26.041 mm (1.024 - 1.025 inch)
HYDRAULIC LASH ADJUSTER
Body Diameter 15.901 - 15.913 mm (0.626 - 0.6264 inch)
Plunger Travel Minimum (Dry) 3.0 mm (0.118 inch)
CAMSHAFT
Journal Diameter No. 1-6 25.951 - 25.970 mm (1.021 - 1.022 inch)
Bearing Clearance - Diametrical 0.069 - 0.071 mm (0.0027 - 0.003 inch)
End Play 0.05 - 0.17 mm (0.0019 - 0.0066 inch)
Lift (Zero Lash)
Intake 8.25 mm (0.324 inch)
Exhaust 6.60 mm (0.259 mm)
Intake Valve Timing*
Closes (ABDC) 51°
Opens (BTDC) 1°
Duration 232°
Exhaust Valve Timing*
Closes (ATDC) 7°
Opens (BBDC) 47°
Duration 234°
Valve Overlap 8°
*All reading in degrees. Timing points @4° from top of ramp.
CYLINDER HEAD
Material Cast Aluminum
Gasket Thickness (Compressed) 0.71 mm (0.028 inch)
VALVE SEAT
Angle 44.5 - 45°
Seat Diameter
Intake 34.37 - 34.63 mm (1.353 - 1.363 inch)
Exhaust 27.06 - 27.32 mm (1.065 - 1.075 inch)
Runout (Maximum) 0.05 mm (0.002 inch)
Valve Seat
Width - Intake and Exhaust 0.9 - 1.3 mm (0.035 - 0.051 inch)
Service Limit
Intake 2.0 mm (0.079 inch)
Exhaust 2.5 mm (0.098 inch)
VALVE GUIDE
Diameter I.D. 5.975 - 6.000 mm (0.235 - 0.236 inch)
Guide Bore Diameter 11.0 - 11.02 mm (0.4330 - 0.4338 inch)
Guide Height (spring seat to guide tip) 13.25 - 13.75 mm (0.521 - 0.541 inch)
VALVES
Face Angle - Intake and Exhaust 44.5 - 45°
Head Diameter
Intake 34.67 - 34.93 mm (1.364 - 1.375 inch)
Exhaust 28.32 - 28.52 mm (1.114 - 1.122 inch)
Valve Length (Overall)
Intake 112.76 - 113.32 mm (4.439 - 4.461 inch)
Exhaust 110.89 - 111.69 mm (4.365 - 4.397 inch)
Valve Stem Diameter
Intake 5.934 - 5.952 mm (0.2337 - 0.2344 inch)
Exhaust 5.906 - 5.924 mm (0.2326 - 0.2333 inch)
VALVE MARGIN
Intake 1.2 - 1.7 mm (0.047 - 0.066 inch)
Service Limit 0.95 mm (0.0037 inch)
Exhaust 0.985 - 1.315 mm (0.038 - 0.051 inch)
Service Limit 1.05 mm (0.039 inch)
VALVE STEM TIP
Intake 48.04 mm (1.891 inch)
Exhaust 47.99 mm (1.889 inch)
VALVE STEM TO GUIDE CLEARANCE
Intake 0.048 - 0.066 mm (0.0018 - 0.0025 inch)
Maximum Allowable 0.076 mm (0.003 inch)
Service Limit 0.25 mm (0.010 inch )
Exhaust 0.0736 - 0.094 mm (0.0029 - 0.0037 inch)
Maximum Allowable 0.101 mm (0.004 inch)
Service Limit 0.25 mm (0.010 inch)
VALVE SPRINGS
Free Length (Approximately) 49.2 mm (1.937 inch)
Nominal Force (Valve Closed) 334 N @ 38.0 mm (75 lbs. @ 1.496 inch)
Nominal Force (Valve Open) 598 N @ 29.75 mm (134 lbs. @ 1.172 inch)
Installed Height 38.00 mm (1.496 inch)
Number of Coils 6
Wire Diameter 3.61 mm (0.142 inch)
Torque
Cylinder Head-Bolts Refer to Procedure Cylinder Head Cover-Bolts 12 Nm (105 inch lbs.)
Intake Manifold-Bolts 23 Nm (200 inch lbs.)
Intake Manifold Support 28 Nm (20 ft. lbs.)
Camshaft bearing caps
Install right and left camshaft bearing caps No. 2 - 5 and right No. 6.
Tighten M6 fasteners to 12 Nm (105 inch lbs.)
Tighten M8 fasteners to 28 Nm (250 inch lbs.).
Tighten in sequence shown in (Fig. 35).
Exhaust Manifold
Tighten in sequence shown in (Fig. 145) to 23 Nm (200 inch lbs.).
Exhaust Manifold High Output
Exhaust Manifold
Tighten in sequence shown in (Fig. 149) to 23 Nm (200 inch lbs.).