Page 46 - Aeronca 11AC Interactive Service Manual

ENGINE INSTALLATION

GENERAL
Continental A65-8 A.T.C. 205. Horizontally opposed, four cylinder, air cooled with 3⅞” bore and 3⅝”
stroke. Total piston displacement is 171 cubic inches and compression ratio 6.3 to 1.

Rated horsepower at sea level, 65 h.p. at 2300 RPM. Recommended cruising 2150 RPM.

Note: Recommended cruising RPM should be static or the maximum RPM shown on the tachometer when
the engine is run up prior to flight with carburetor heat off.

OIL REQUIRED IGNITION

Warm weather S.A.E. #40 Bendix, Scintilla or Eisemann magnetos.
Cold weather S.A.E. #30 Champion C-26 spark plugs.

Oil pressure 10-35 pounds per sq. inch
Oil temperature Minimum – 120° F. FIRING ORDER
Maximum – 220° F.
1 – 2 – 3 – 4.

CARBURETOR
Stromberg N.A.-S3A1 SPARK ADVANCE
30° B.T.C. with both magnetos. Left
magneto (number 1 mag.) fires lower spark
FUEL REQUIRED plugs, right magneto (number 2 mag.) fires
73 octane. upper plugs.

FUEL CONSUMPTION
4.25 U.S. gallons per hour
3.52 Imperial gallons per hour

MOUNT

Attachment of engine to fuselage is provided by the engine mount assembly, fabricated of 1010, 1025 and
X4130 steel tubing engineered to lessen vibration transmission to the fuselage. Four AN bolts attach the
mount to the fuselage and four AN bolts attach the engine to the mount. Rubber bushings are provided by
the engine manufacturer to insulate further against vibration at the engine mount attachments.

BAFFLES
Two side and two rear baffles make up the basic cylinder barrel and cylinder head pressure cooling system.

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