bpr Rotax 912 i Series, Maintenance Manual, Page: 118 / 458

Effectivity: 912 i Series
Edition 1/Rev. 2
d0
593
3.
fm
MAINTENANCE MANUAL
BRP-Powertrain
71-00-00
Page 10
July 01/2014
TYPE DESCRIPTION
e.g. ROTAX 912 i Sc 3
NOTE:
The type description is composed as
follows.
NOTE:
The exact type descriptions can be
found in the current Operators Manual
for your engine.
TECHNICAL DATA
OPERATING LIMITS
See the current 912 i Series Operators Manual,
"Operating instructions".
OPERATING FLUIDS/CAPACITIES
See the current 912 i Series Operators Manual,
"Operating fluids".
WEIGHTS
See the current 912 i Series Operators Manual,
"Technical data".
ENGINE/COMPONENTS, GENERAL
Designation Description
Type 912 4-cyl. horizontally op-
posed, normal aspi-
rated engine.
Certification iSc Sport Certified according to
EASA CS-E (TC No.
EASA.E121).
iS, iS Sport Non-certified aircraft
engines.
Version 2 Propeller shaft with
flange for fix pitch
propeller.
3 Propeller shaft with
flange for variable
pitch propeller and
drive for constant
speed propeller go-
vernor system.
m
WARNUNG
NOTICE
Detailed technical data relevant for operation is
listed in the Operators Manual and must be ob-
served.
Cer
tific
a
tion
Config
u
r
a
tion
Design 4-cylinder normal aspirated
engine
Bore 84 mm
Stroke 61.0 mm
Displacement 1352 cm
3
Cylinders Light alloy cylinder with Nikasil
plating
Pistons Light alloy piston with 3 piston
rings
Cylinder head 4 single cylinder heads
Compression 10.8:1
Intake valve 38 mm, valve seat plated
Exhaust valve 32 mm NIMONIC, valve seat
stellite-plated
Valve clearance Automatic valve clearance
compensation by means of hy-
draulic valve tappet
Valve drive OHV, hydraulic valve tappet,
push-rods and rocker arms
Camshaft Steel, heat- and surface-trea-
ted
Crankshaft Mounted in 5 places on plain
bearings, carburised
Cooling system Liquid-cooled cylinder heads,
ram air cooled cylinders
Lubrication Oil pump:
Dry sump forced lubrication
with trochoid pump, drive from
the camshaft, blow-by oil re-
turn
Oil pressure Min.: 0.8 bar (under 3500
rpm)
Normal: 2 to 5 bar (over 3500
rpm)
Max.: 7 bar