Installation & Operation Manual
O-360 and IO-360 Series Engines
5 Chapter 3 • Aircraft / Engine
© March 2004 Superior Air Parts Inc. Integration Considerations
Fuel flow meters that indicate flows based upon
fuel system pressure can be less accurate than
those that sense flow directly in times when
abnormalities occur. For example, dirty fuel
injectors or carburetor float malfunctions can
cause increases or decreases to system
pressure that would result in improper fuel flow
indications for pressure-based flow meters. For
this reason, Superior Air Parts recommends the
use of direct sensing flow meters such as vane
or turbine styles.
C. Carburetors
Carburetors used on Superior Vantage Engines
are conventional single barrel float type systems
with updraft induction and are equipped with
manual throttle and mixture controls. In the full
lean position, the manual mixture control serves
as an idle cutoff control. The carburetor requires
a low-pressure engine driven fuel pump
(supplied).
Superior Vantage Carbureted Engines require a
priming system. The engines are supplied with
manual primer lines installed to the #1, #2 and
#4 cylinder inlet ports and plumbing to feed from
a common primer source. The aircraft priming
system should be attached to this common
primer source.
The carburetor system is part of the Superior
Vantage Engine and therefore certified as part of
the engine. No one may make significant
changes to either flow settings or mechanical
linkages without prior approval by Superior.
Proper functioning and mixture settings of the
carburetor system must be made in flight and
ground idle tests. These tests should include all
envisioned flight attitudes and conditions as well
as ground idle temperature variations. In
addition to performance characteristics, exhaust
gas and cylinder head temperatures must be
monitored during these tests as a means of
verifying the correctness of the carburetor
system settings.
D. Fuel Injection Systems – Port Type
Fuel injector systems used on Superior Vantage
Engines are direct port injection systems with a
fuel-metering servo at the entrance to the intake
manifold. The fuel-metering servo is equipped
with manual throttle and mixture controls. In the
full lean position, the manual mixture control
serves as an idle cutoff control. The fuel
injection system requires a high-pressure engine
driven fuel pump (supplied).
Superior Vantage Fuel Injected Engines do not
require a separate priming system. Priming is
accomplished by operating an aircraft boost
pump with the manual mixture control in the full-
rich position. After priming, the manual mixture
control should be moved to the idle cutoff
position for engine start and then moved back to
full rich after the engine has started.
Proper functioning and mixture settings of the
fuel injection system must be made in flight and
ground idle tests. These tests should include all
envisioned flight attitudes and conditions as well
as ground idle temperature variations. In
addition to performance characteristics, exhaust
gas and cylinder head temperatures must be
monitored during these tests as a means of
verifying the correctness of the fuel injection
system settings.
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