Funky Exhaust Stack

[Art Tiller]

Big day for me today. My ADS-B is programed and for the first time I took the cowling off of my Sonex. I also got it back on, and did not have any pieces left over.

I did see something unusual. It appears that my left hand exhaust tube may have a hole or a crack. It also appears that the oil cooler may be chaffing on the exhaust tube.

It would be really nice if all left hand exhaust tubes look like this. I am pretty sure I will be ordering a new tube from Sonex. Check out these pics. What do you think?

https://imgur.com/P8fCojn
https://imgur.com/6RxCDSz
https://imgur.com/GymHR71

[Bryan Cotton]

They are stainless. You can clean that up. I'd pressurize it with a shop vac and use soapy water to check for a leak. Any good welder could fix that.

[Area 51%]

Is it just me, or does it look like the airflow goes forward?

[WesRagle]

Hey Art,

Looks like an oil leak dripping on the exhaust pipe and running down as it burns off?.?.?

Wes

[Art Tiller]

Wes may have a point. The tube is under the aft part of the valve cover. There is some wetness around. I will look closer at this and perhaps do the shop vac trick as well.

[Bryan Cotton]

An AeroVee leaking oil? That's a rare thing!

[Area 51%]

The second picture has what looks to be a crack near the spring loop.

[Art Tiller]

I concur with Area51% on the loop crack. I will be using the shop vac trick soon. My wife says I can get one from Sam's club. I have watched mechanics and held wrenches for them my whole life. Now I R one.

[alowe568]

Art,
I just saw this thread. Note that the exhaust tubes were ceramic coated inside and out. It might be just the ceramic coating cracked but a leak check will tell.
Alan

[Scott Todd]

C'mon Bryan...AeroVees don't leak. They mark their territory.