Textron LYCOMING O-320 Series - Page 18

SECTION 2 LYCOMING OPERATOR’S MANUAL
SPECIFICATIONS O-320 SERIES
SPECIFICATIONS
O-320-A, -E* SERIES
FAA Type Certificate ....................................................................................................................................274
Rated horsepower...........................................................................................................................................150
Rated speed, RPM........................................................................................................................................2700
Bore, inches.................................................................................................................................................5.125
Stroke, inches..............................................................................................................................................3.875
Displacement, cubic inches.........................................................................................................................319.8
Compression ratio ....................................................................................................................................... 7.0:1
Firing order ............................................................................................................................................. 1-3-2-4
Spark occurs, degrees BTC..............................................................................................................................25
Valve rocker clearance (hydraulic tappets collapsed) ......................................................................... .028-.080
Propeller drive ratio ....................................................................................................................................... 1:1
Propeller drive rotation (viewed from rear) ........................................................................................Clockwise
* - O-320-E2A, -E2C, and –E2F have alternate rating of 140 HP at 2450 RPM.
O-320-B, -D** SERIES
FAA Type Certificate ....................................................................................................................................274
Rated horsepower...........................................................................................................................................160
Rated speed, RPM........................................................................................................................................2700
Bore, inches.................................................................................................................................................5.125
Stroke, inches..............................................................................................................................................3.875
Displacement, cubic inches.........................................................................................................................319.8
Compression ratio ....................................................................................................................................... 8.5:1
Firing order ............................................................................................................................................. 1-3-2-4
Spark occurs, degrees BTC..............................................................................................................................25
Valve rocker clearance (hydraulic tappets collapsed) ......................................................................... .028-.080
Propeller drive ratio ....................................................................................................................................... 1:1
Propeller drive rotation (viewed from rear) ........................................................................................Clockwise
** - O-320-D2H has alternate rating of 150 HP at 2500 RPM. O-320-D2J has alternate rating of 150 HP at
2500 RPM and 155 HP at 2600 RPM.
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