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Jabiru Aircraft
Pty Ltd
Installation Manual
Jabiru 3300 Aircraft Engine
REVISION
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Dated : 1
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Dec 2016
Page: 52 of 56
If the engine gets too hot during testing don’t push it. Something needs to be changed.
For low speed cooling a lip on the front edge cowl outlet can add up to 20mm of pressure drop at 65kts ( a
lip 25mm deep at 60° to the airflow
– shown in Figure 56).
Refer to Figure 22. CHT terminals must be placed correctly or inaccurate (too high) readings can result.
Figure 60: Cooling pressure measurement.
Figure 61: Ram Air duct pressure tapping.
12.7
Pusher Installations
For pusher installations the details given above hold, though some changes are necessary for the different
configuration.
Versions of Jabiru ram air ducts are available for high speed and low speed pusher installations.
The propeller can be used to suck air out of the cowls, using the following as a guide: