647jc
Well Known Member
I have a pretty basic 9A with an O-320 Lyc. and standard Vetterman crossover exhaust system hung via the Van/Vetterman exhaust hanging system. After about 70 hours on the airplane I noticed the exhaust pipe(s) are rubbing against the engine mount and has rubbed off some of the powder coating. I need to correct this before it gets any worse. The problem appears to be caused by the exhaust pipes ability to swing sideways ?? or more. The hanging system does not lock the pipes in place and you can grab the end of the pipe(s) and pull them from side to side where they will hit the engine mount. You can center them so they clear the engine mount and clear the sides of the bottom cowl exhaust tunnel but just about any engine movement (startup, etc.) can shift the pipes to one side or the other where they will start to rub the engine mount. There just isn?t much clearance to play with in that area since you need to keep clear of both the cowl tunnel sides and the engine mount. So, I suspect I?m not the only person to encounter this problem and was wondering how others may have addressed the issue.