Overhaul Manual
O-360 and IO-360 Series Engines
Features and Operating Mechanisms
Crankshaft - The crankshaft is made from high
quality, aerospace grade steel. All bearing
journal surfaces are nitrided. There are 3 kinds
of crankshafts: thin-wall, thick-wall, and solid
front mains which can be identified by looking at
the center of the front of the crankshaft or prop
oil cavity. The thin-wall and thick-wall
crankshafts are each available as fixed-pitch or
constant-speed. Fixed-pitch versions have a
plug installed in the inner diameter of the front
main, or prop oil, cavity which prevents escape
of oil out the front, since there isn’t a prop
governor or constant-speed prop for the oil
pressure to act upon.
Connecting Rods - The connecting rods are
made from aerospace grade, high quality steel.
They have replaceable bearing inserts in the
crankshaft ends and bronze bushings in the
piston ends. The bearing caps on the
crankshaft ends are retained by two bolts with
self locking nuts per cap. Caps are tongue and
groove type for improved alignment and rigidity.
Camshaft - Valve Operating Mechanism - The
camshaft is located above and parallel to the
crankshaft. The camshaft actuates hydraulic
lifters that operate the valves through pushrods
and valve rockers.
Crankcase - The crankcase is made from
aerospace grade, stabilized structural aluminum
alloy. The assembly consists of two reinforced
aluminum alloy castings fastened together by
means of studs, bolts, and nuts. The main
bearing bores are machined for use with
precision type main bearing inserts.
Accessory Housing - The accessory housing is
made from an aluminum casting and is fastened
to the rear of the crankcase and the top rear of
the sump.
Oil Sump - The sump incorporates an oil drain
plug, oil suction screen, mounting pad for
carburetor or fuel injector, the intake riser, and
intake pipe connections.
Cylinders - Millennium
®
Cylinders are used
exclusively. These air-cooled cylinders are
manufactured by screwing and shrinking the two
major parts, head and barrel, together. The cast
heads are made from a special aluminum alloy.
All barrels are made from forgings produced to
aerospace specifications. They are internally
choked and honed to allow optimal operating
conditions for the rings and pistons at operating
temperatures.
Pistons - The pistons are made from an
aluminum alloy. The piston pin is a full floating
type with a plug located in each end of the pin.
The piston is a 3-ring type with 2 compression
rings and 1 oil control ring.
Cooling System – Superior Vantage Engines
are designed to be air-cooled. Baffles are
provided to build up air pressure and force the
air between the cylinder fins. The air is
exhausted to the atmosphere through the rear of
the cowling.
Induction System - The distribution of the air to
each cylinder is through the center zone of the
induction system. This is integral with the oil
sump.
Fuel Systems
Carbureted
- Superior Air Parts O-360 engines
are equipped with a float type carburetor The
MA-4-5 carburetors are of the single barrel float
type equipped with a manual mixture control and
an idle cut-off.
Fuel Injected
- IO-360 series engines are
equipped with a direct cylinder injected RSA-5
fuel injector. The fuel injection system
schedules fuel flow in proportion to airflow. Fuel
vaporization takes place at the intake ports. The
RSA fuel injection system is based on the
principle of measuring airflow and using the air
pressure in a stem type regulator, converting the
air pressure into a fuel pressure. The fuel
pressure (fuel pressure differential), when
applied across the fuel metering section (jetting
system), makes fuel flow proportional to airflow.
16
© March 2005 Superior Air Parts Inc.
02-00-00
Description and Operation
To Next Page
Loading...
Need help?
General
