LYCOMING OPERATORS MANUAL
SECTION 2
O-360 AND ASSOCIATED MODELS
SPECIFICATIONS
SPECIFICATIONS (CONT.)
IO-360-B1G6, . -M1B*
FAA Type Certificate ................................................................................................................................. 1E10
Rated horsepower...........................................................................................................................................180
Rated speed, RPM........................................................................................................................................2700
Bore, inches.................................................................................................................................................5.125
Stroke, inches..............................................................................................................................................4.375
Displacement, cubic inches.........................................................................................................................361.0
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 driven rotation (viewed from rear) ......................................................................................Clockwise
- For information pertaining to engine model (L)IO-360-M1A, refer to Operation and Installation Manual
P/N 60297-36.
* - This engine has an alternate rating of 160 HP at 2400 RPM.
IO-360-A, -C, -D, -J, -K Series
FAA Type Certificate ................................................................................................................................. 1E10
Rated horsepower...........................................................................................................................................200
Rated speed, RPM........................................................................................................................................2700
Bore, inches.................................................................................................................................................5.125
Stroke, inches..............................................................................................................................................4.375
Displacement, cubic inches.........................................................................................................................361.0
Compression ratio ....................................................................................................................................... 8.7:1
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 driven rotation (viewed from rear) ......................................................................................Clockwise
NOTE**
On the following model engines, the magneto spark occurs at 20° BTC. Consult nameplate
before timing magnetos.
Models
Serial No.
IO-360-A Series (Except -A1B6D)
L-14436-51 and up
IO-360-C, -D Series (Except -C1C, -C1F, -C1C6, -C1D6)
L-14436-51 and up
IO-360-C1C, -C1F
L-13150-51 and up
IO-360-C1D6
L-14446-51 and up
LIO-360-C1E6
L-1064-67 and up
AIO-360-A1A, -A1B, -B1B
L-220-63 and up
HIO-360-C1A, -C1B
L-14436-51 and up
IO-360-C1C6
All Engines
IO-360-C1G6
All Engines
IO-360-J1AD, -K2A
All Engines
Revised March 2009
2-3
