walkman
Well Known Member
I just took my -8 down for MX to do a warranty replacement on my Skytec starter and replace my whining ND alternator. As I always do whenever I have the cowl off, I checked the exhaust (among other things).
The builder or prior owner had wrapped the crossover pipe between 1 and 2 down to the join, presumably to help protect the cowl from radiant heat. I noticed soot on the inside of the cowl and some degradation of the header wrap. Upon removal I found this. It appears that the reduced ability to shed heat might have caused the weld to fail.
https://www.dropbox.com/s/39txj250igq97tq/2014-05-29%2020.20.38.jpg
https://www.dropbox.com/s/ed15c8sg69np8jn/2014-05-29%2020.20.55.jpg
https://www.dropbox.com/s/5hydoutkwr39ph6/2014-05-29%2020.21.15.jpg
The builder or prior owner had wrapped the crossover pipe between 1 and 2 down to the join, presumably to help protect the cowl from radiant heat. I noticed soot on the inside of the cowl and some degradation of the header wrap. Upon removal I found this. It appears that the reduced ability to shed heat might have caused the weld to fail.
https://www.dropbox.com/s/39txj250igq97tq/2014-05-29%2020.20.38.jpg
https://www.dropbox.com/s/ed15c8sg69np8jn/2014-05-29%2020.20.55.jpg
https://www.dropbox.com/s/5hydoutkwr39ph6/2014-05-29%2020.21.15.jpg
Last edited: