Teledyne Continental Motors, Inc.
TM
Engine
Description
IOF-550 Permold Series Engine Maintenance Manual
2-35
12 October 2007
Change 1
2-3.3. IOF-550-N, P, and R Specifications and Operating Limits
Table 2-3.
IOF-550-N, P, and R Specifications & Operating Limits
GENERAL
Model
IOF-550-N IOF-550-P IOF-550-R
FAA
Type
Certificate
E3SO E3SO E3SO
Installation Drawing Number
656960
657089
657101
Time Between Overhaul (TBO)
2400 hours or 12 years
Arrangement
Individual cylinders horizontally opposed
Compression Ratio
8.5:1
Number of Cylinders
6
Firing Order
1-6-3-2-5-4
Bore
5.25 inches
13.335 cm
Stroke
4.25 inches
10.795 cm
Piston Displacement
552 cubic inches
9.0 L
CRANKSHAFT SPEED & BRAKE HORSEPOWER
Rated Maximum Continuous Operation*
310 bhp -0%+5% @ 2700 rpm
Crankshaft Speed (Maximum rated)
2700 rpm
Engine Idle Speed, Minimum
700 rpm
Rated Manifold Pressure
Full Throttle (Sea Level)
Maximum Recommended Cruise
232 bhp @ 2500 rpm
* Performance is based on sea level, standard day, zero water vapor pressure conditions at the throttle inlet and
exhaust exit with no engine accessory load. Standard day conditions are 29.92 in Hg and 59° F.
Horsepower will vary approximately 1% for each 10° F (5.6° C) change in throttle inlet air temperature. Correction
must also be made for exhaust backpressure and accessory drive losses. Contact TCM engineering for specific
application correction factors.
FUEL SYSTEM SPECIFICATIONS
Fuel Control System
FADEC Electronic Sequential Port Fuel Injection
Fuel Minimum Grade**
100LL Blue or 100 Green
Russian Commonwealth of Independent States
B95/130
People’s Republic of China
RH95/130
Fuel System Pressure & Flow
Refer to Chapter 6, Engine Operational Checks
Boost Fuel Pump Specifications
Refer to TCM’s Detailed Model Specifications
**If the minimum grade required is not available, use the next available higher grade. Never use a lower grade
fuel.
FUEL CONSUMPTION
Power Level
BHP (kW)
lbs./hr (max)
Rated Power, 100%
310 (231)
165
Cruise, 85%
262 (195)
155
Cruise, 75%
232 (173)
142
Cruise, 65%
201 (150)
128
IGNITION
Spark Plugs to be used
Refer to TCM’s Service Information Letter SIL 03-2A
“Currently Active Approved Spark Plug Application”
Ignition Timing
Variable
Spark Plug Gap
Spark plug manufacturer’s specified gap.