2WW ENGINE MECHANICAL SERVICE DATA

Table 1. 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

Table 2. CYLINDER HEAD GASKET
Cylinder head gasket	Standard piston protrusion		0.420 to 0.680 mm (0.0165 to 0.0268 in.)
	Piston protrusion	0.92 mm (0.00362 in.)	Use 1 hole
		0.92 to 1.03 mm (0.0362 to 0.0406 in.)	Use 2 hole
		1.03 to 1.18 mm (0.0406 to 0.0465 in.)	Use 3 hole

Table 3. ENGINE UNIT
Camshaft	Runout	0.03 mm (0.00118 in.)
No. 2 camshaft	Runout	0.03 mm (0.00118 in.)

Table 4. 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.)

Table 5. 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	84.000 to 84.002 mm (3.30708 to 3.30716 in.)
Cylinder bore	Reference value (New parts)		O/S 0.25	84.250 to 84.252 mm (3.31692 to 3.31700 in.)
Piston	Piston diameter		STD	83.950 to 83.970 mm (3.30708 to 3.30716 in.)
	Piston diameter		O/S 0.25	84.200 to 84.220 mm (3.3149 to 3.31574 in.)
	Oil clearance		New piston	0.03 to 0.17 mm (0.00118 to 0.00669 in.)
	Oil clearance		Maximum	More than 0.25 mm (0.00984 in.)
Piston ring	Ring groove clearance	No. 1 compression spring	Standard	0.07 to 0.11 mm (0.00275 to 0.00435 in.)
	Ring groove clearance	No. 2 compression spring	Standard	0.07 to 0.11 mm (0.00275 to 0.00435 in.)
	End gap	No. 1 compression spring	Standard	0.15 to 0.25 mm (0.00590 to 0.0984 in.)
	End gap	No. 2 compression spring	Standard	0.30 to 0.45 mm (0.0118 to 0.0177 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.)