Thought my engine was sounding a little clacky at idle, and not quite right. So decided to
drop the exhaust to check the gaskets, and flanges. Glad I did, found a cracked pipe on
CoPilot side rear (covered by the clamp strap), and a broken Flange on Pilot side rear
None of this was noticeable until I unbolted it and it quite literally fell apart ...
Might be a good idea to add "Drop and Inspect Exhaust" to your IO-240B Annual ... None
of these breaks were noticeable with the exhaust mounted.
Jeff
Here's a scary break, that was completely invisible before disassembly
IMG_0134.jpg
Notice the Break is completely covered by the strap.
IMG_0135.jpg
This flange looked fine, but fell into two pieces when the nuts were removed.
IMG_0131.jpg
Can see the weld on all these flanges does not completely encircle
IMG_0133.jpg