LYCOMING OPERATOR’S MANUAL SECTION 2
O-360 AND ASSOCIATED MODELS SPECIFICATIONS
SPECIFICATIONS (CONT.)
HIO-360-C Series
FAA Type Certificate ................................................................................................................................. 1E10
Rated horsepower...........................................................................................................................................205
Rated speed, RPM........................................................................................................................................2900
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
** - See Note Page 2-3.
HIO-360-D Series
FAA Type Certificate ................................................................................................................................. 1E10
Rated horsepower...........................................................................................................................................190
Rated speed, RPM........................................................................................................................................3200
Bore, inches.................................................................................................................................................5.125
Stroke, inches..............................................................................................................................................4.375
Displacement, cubic inches.........................................................................................................................361.0
Compression ratio ..................................................................................................................................... 10.0:1
Firing order ............................................................................................................................................. 1-3-2-4
Spark occurs, degrees BTC..............................................................................................................................20
Valve rocker clearance (hydraulic tappets collapsed) ....................................................................... *.028-.080
Propeller drive ratio ....................................................................................................................................... 1:1
Propeller driven rotation (viewed from rear) ......................................................................................Clockwise
* - Consult Service Bulletin No. 402 for valve rocker clearance of HIO-360-D1A.
HIO-360-E Series*
FAA Type Certificate ................................................................................................................................. 1E10
Rated horsepower...........................................................................................................................................190
Rated speed, RPM........................................................................................................................................2900
Bore, inches.................................................................................................................................................5.125
Stroke, inches..............................................................................................................................................4.375
Displacement, cubic inches.........................................................................................................................361.0
Compression ratio ....................................................................................................................................... 8.1:1
Firing order ............................................................................................................................................. 1-3-2-4
Spark occurs, degrees BTC..............................................................................................................................20
Valve rocker clearance (hydraulic tappets collapsed) ......................................................................... .028-.080
Propeller drive ratio ....................................................................................................................................... 1:1
Propeller driven rotation (viewed from rear) ......................................................................................Clockwise
* - HIO-360-E has a rating of 205 HP at 2900 RPM and 36.5 in. Hg. manifold pressure when equipped with
turbocharger kit SK-28-121000 or equivalent.
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