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http://www.ultralightnews.ca/hirth-engines.htm Page 27 of 31
The Ultralight News
11Exhaust System
Detailed below are the three basic exhaust versions suitable for the 2704 engine. It is extremely important to
note the distance where the diffuser is inserted into the silencer. On the 2704 engine, the distance of "I" is as
shown below therefore the diffuser MUST be inserted completely into the silencer then withdrawn the
specified measurement.
1x 278 E19U Connection Bow
Ver. 1 1x 278 T19U Diffuser cone (straight) l = 55 mm
or Ver. 2 1x 278 T20U Elbow (90°) l = 94 mm
or Ver. 3 1x 278 T21U Elbow (180°) l = 98 mm
1x 278 E4U Silencer
Version 1 (Straight Version):
Version 2 (90° Elbow Version):
Version 3 (180° ElbowVersion):
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