Service manual

G420F(FE) Service Manual Chapter 3. Engine Mechanical System 35
Specifications
Description Specification Limit
GENERAL
Type
Cylinder number In-line, DOHC
Bore 4
Stroke 82 mm
Displacement 93.5 mm
Compression ratio 1,975 cc
Firing order 1 - 3 - 4 - 2
Low idle 750±15 rpm
Ignition timing @ low idle BTDC 5°±5°
Valve timing
Intake
Open BTDC 2°
Close ABDC 16°
Exhaust
Open BBDC 6°
Close ATDC 2°
Valve over rap 4°
CYLINDER HEAD
Flatness of gasket surface 0.03 mm or less 0.06mm
Flatness of manifold mounting surface 0.15 mm or less 0.3mm
Oversize of valve seat hole
Intake
0.3 mm OS 33.3 ~ 33.325 mm 0.2mm
0.6 mm OS 33.6 ~ 33.625 mm
Exhaust
0.3 mm OS 28.8 ~ 28.821 mm
0.6 mm OS 29.1 ~ 29.121 mm
Oversize of valve guide hole
0.05 mm OS 11.05 ~ 11.068 mm
0.25 mm OS 11.25 ~ 11.268 mm
0.50 mm OS 11.50 ~ 11.518 mm
CAMSHAFT
Cam height
Intake 43 mm
Exhaust 43 mm
Journal O.D Ø28 mm
Bearing oil clearance 0.02 ~ 0.061 mm
End play 0.1 ~ 0.2 mm