Lycoming O-290 Operator's Manual page 19

LYCOMING OPERATOR'S MANUAL
O-235 AND O-290 SERIES
FAA Type Certificate ....................................................................................................................................223
Take-off horsepower......................................................................................................................................115
Take-off RPM ..............................................................................................................................................2800
Rated horsepower...........................................................................................................................................108
Rated RPM...................................................................................................................................................2600
Bore, inches.................................................................................................................................................4.375
Stroke, inches..............................................................................................................................................3.875
Displacement, cubic inches.........................................................................................................................233.3
Compression ratio ..................................................................................................................................... 6.75:1
Prop. drive ratio ............................................................................................................................................. 1:1
Prop. drive rotation (viewed from rear) ..............................................................................................Clockwise
Firing orders............................................................................................................................................ 1-3-2-4
Spark occurs, BTC ......................................................................................................................................... 25°
Rocker clearance, cold ......................................................................................................................... .007/.009
FAA Type Certificate ....................................................................................................................................223
Take-off horsepower......................................................................................................................................118
Take-off RPM ..............................................................................................................................................2800
Rated horsepower...........................................................................................................................................115
Rated RPM...................................................................................................................................................2700
Bore, inches.................................................................................................................................................4.375
Stroke, inches..............................................................................................................................................3.875
Displacement, cubic inches.........................................................................................................................233.3
Compression ratio ....................................................................................................................................... 8.5:1
Prop. drive ratio ............................................................................................................................................. 1:1
Prop. drive rotation (viewed from rear) ..............................................................................................Clockwise
Firing orders............................................................................................................................................ 1-3-2-4
Spark occurs, BTC ......................................................................................................................................... 20°
Rocker clearance, cold ......................................................................................................................... .007/.009
Engine models are categorized according to their basic series. Any model that varies in
specification within a series is listed separately.
Spark advance is also found on nameplate.
SPECIFICATIONS (CONT.)
O-235-H
O-235-K2C
NOTE
SECTION 2
SPECIFICATIONS
2-3