1WW ENGINE MECHANICAL SERVICE DATA

ENGINE
Engine idle speed 830 rpm
Maximum engine speed 3800 rpm
Compression Standard pressure

1600 kPa (16.3 kgf/cm2, 232 psi) or higher
Difference between each cylinder All cylinders almost same valve
CYLINDER HEAD GASKET
Cylinder head gasket Piston protrusion Standard 0.420 to 0.680 mm (0.0165 to 0.0268 in.)
ENGINE UNIT
Camshaft Runout 0.03 mm (0.00118 in.)
No. 2 camshaft Runout 0.03 mm (0.00118 in.)
CYLINDER HEAD
Intake valve Valve stem diameter Standard 4.92 mm (0.194 in.)
Exhaust valve Valve stem diameter Standard 4.92 mm (0.194 in.)
Intake valve seat Width Standard 1.2 mm (0.0472 in.)
Exhaust valve seat Width Standard 1.4 mm (0.0551 in.)
Camshaft Thrust clearance Standard 0.033 to 0.150mm (0.00130 to 0.00591 in.)
CYLINDER BLOCK
Connecting rod Oil clearance Standard 0.015 to 0.050 mm (0.000591 to 0.00197 in.)
Crankshaft Thrust clearance Standard 0.06 to 0.25 mm (0.00236 to 0.00984 in.)
Cylinder bore Reference value (New parts) STD 78.000 to 78.002 mm (3.07087 to 3.07094 in.)
O/S 0.25 78.250 to 78.252 mm (3.08071 to 3.08079 in.)
Piston Oil clearance New piston 0.03 to 0.17 mm (0.00118 to 0.00669 in.)
Use piston 0.20 to 0.25 mm (0.00787 to 0.00984 in.)
Maximum 0.25 mm (0.00984 in.)
Piston ring Ring groove clearance No. 1 compression spring Standard 0.015 to 0.070 mm (0.00059 to 0.00276 in.)
No. 2 compression spring Standard 0.015 to 0.060 mm (0.00059 to 0.00236 in.)
Oil ring rail Standard 0.04 to 0.10 mm (0.00157 to 0.00394 in.)
End gap No. 1 compression spring Standard 0.20 to 0.40 mm (0.00787 to 0.0157 in.)
Maximum 0.95 mm (0.0374 in.)
No. 2 compression spring Standard 0.30 to 0.55 mm (0.0118 to 0.0217 in.)
Maximum 1.06 mm (0.0417 in.)
Oil ring rail Standard 0.10 to 0.40 mm (0.00394 to 0.0157 in.)
Maximum 0.82 mm (0.0323 in.)
Crankshaft Oil clearance Standard 0.023 to 0.054 mm (0.000906 to 0.00213 in.)
Crankshaft main journal Diameter Mark 1 Standard 54.984 to 54.990 mm (2.16472 to 2.16496 in.)
Mark 2 Standard 54.977 to 54.983 mm (2.16444 to 2.16469 in.)
Mark 3 Standard 54.971 to 54.976 mm (2.16421 to 2.16441 in.)
U/S 0.25 Mark 1 Standard 54.734 to 54.740 mm (2.15488 to 2.15511 in.)
Mark 2 Standard 54.727 to 54.733 mm (2.15460 to 2.15484 in.)
Mark 3 Standard 54.721 to 54.726 mm (2.15437 to 2.15457 in.)