d04924.fm
INSTALLATION MANUAL
BRP-Powertrain
Effectivity: 912 Series
Edition 2/Rev. 0
75-00-00
page 24
August 01/2012
Flow rate
The flow rate in the coolant circuit is approx. 60 l/min (15.85 USgal/min.) at
5800 rpm. At full throttle, an approximate value of around 0.75 m
3
/s
(28.59 cu.ft/sec) can be assumed for the required cooling air flow.
Der
Flow resistance The flow resistance of the coolant in the optional ROTAX radiator is cor-
rectly adjusted for the cooling system.
If using other radiators, check the flow rate and cooling capacity.
Installation of
the radiator
No provision has been made for attachment of the radiator(s) on the
engine (rubber mounts are recommended).
4.1) Coolant capacity
4 cylinder heads......................................... 560 cm
3
(0.02 cu.ft)
Coolant pump............................................. 100 cm
3
(0.004 cu.ft)
Expansion tank .......................................... 250 cm
3
(0.008 cu.ft)
Overflow bottle ........................................... approx. 0.5 l (0.13 USgal)
2 m coolant hose (inner Ø 18 mm) ............. 500 cm
3
(0.018 cu.ft)
Total coolant quantity for engine................ approx. 1.5 l (0.4 USgal)
The radiator must be installed without distortion or
stress and free of vibrations.
If a GENUINE-ROTAX radiator is not being installed,
ensure sufficient cooling capacity.
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