Cylinder Bores; Crankshaft - Westerbeke WPDS-20 Technical Manual

A27
CYLINDER BORES
1. If the cylinder bores cannot be cleaned up at the
maximum oversize given in Data bore them to the
dimension given for fitting cylinder liners.
Data
Standard cylinder bore
Oversizes: First
Second (maximum if linered) ..
Third
Bore size for fitting liners ..
2.
Press in the cylinder liners and then bore them to
the standard bore size.
3·4995 to 3·501 in. (88·89 to 88·93 mm.)
·010 in. (·254 mm.)
·020 in. (·508 mm.)
·030 in. (·762 mm.)
3·642 to 3·6425 in. (92·507 to 92·520 mm.)
CRANKSHAFT
Data
Crankshaft journal diameter
Clearance in main bearings ..
Crankpin diameter
Clearance in big-end bearings
Undersizes Oournals and crankpins):
First ..
Second
Third
Fourth
End-float
2·4785 to 2·4790 in. (62·95 to 62·96 mm.)
·0015 to ·003 in. (·038 to ·076 mm.)
2·2480 to 2·2485 in. (57·099 to 57·112 mm.)
·002 to ·0035 in. (·051 to ·089 mm.)
·010 in. (·254 mm.)
·020 in. (·508 mm.)
·030 in. (·762 mm.)
·040 in. (1·016 mm.)
·002 to ·003 in. (·051 to ·076 mm.)