Rear engine oil leaks

[Jhogan0101]

Well after jamming many towels in many places and running up/checking the towels.
It seems that the leak is on pilot side between cylinder 1 and 3.
When flight air blows down it makes a real mess inside this side of engine.
Ive included a link to the drip.
Ive looked topside of the engine and do not see any leaking.
Could my cylinder be leaking between the heat fins?
Has anyone else seen this?

https://ibb.co/Fm0CJ3W

[Kim Geyer]

It can leak there if the cylinder is cracked. I would remove that piece of baffle, pressurize the cylinder and soap check it for leaks. You may have a head fixing to separate from the barrel

[TomM]

Unfortunately, I have seen this personally, and to more of an extreme than Kim mentioned on my front engine.............so remove some of the items in the way and do a good check. I good borescope may help to get in tight places without having to remove a bunch of stuff. Of course these are extreme examples, but they do happen so you need to look. Keep us posted!

[Jhogan0101]

I removed the baffles today and good news looks like cylinder is not cracked.
Looks like the leaking is coming from the base of #3 and #1 cylinders.
Lots of wiggling when running.

[Jhogan0101]

After retorquing the cylinder base nuts it looks like both the 1 and 3 cylinder have a small crack behind where the CHT probe is.
The leak on 3 is worse, drips once every 3 secs or so.
I will remove both and exchange w j&j or gibson.

[mshac]

Pics if at all possible, please.