Exhausts

[Mike Davis]

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Date: Fri, 27 Feb 1998 09:00:36 -0800
From: Brian Godden <godden@club-internet.fr>
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Organization: Murphy Europe
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Subject: Exhausts
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Hi guys,
I must admit to a little confusion over exhausts. Our 0-320 here uses
the standard Murphy cross over in the new cowling. It is installed
absolutely stock i.e.the expansion joints are free, there are no
mufflers, and the end pipes are not supported. The carb heat comes off
the front cross over, the cabin heat from the stbd. tail pipe.
After over 400 hours the left rear cylinder down pipe cracked just after
the flange. I feel this was due to some stress introduced by some scat
tubing poorly positioned. 150 hours on, no problems.
I think most exhausts will crack eventually, the trick is make sure if
it does the result is not catastrophic. Mine cracked on climb out and I
happily cruised round the circuit....woke everybody up though..boy was
it noisy!
Brian



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