Today I installed a new oil return line on the #2 cylinder (front left).
The original line from Lycoming interfered with the snorkel, which is a know issue with the EXP119 engine. Conveniently, Aircraft Specialty make a drop in replacement line for just this problem.
I removed the original line, and test-fit the new one. It worked great, but I couldn’t quite get a flush fit between the flared tube end and the fluid fitting on the engine. After some fiddling around I guessed that the problem was the fitting clocking not being exactly right for the new hose. I removed the fluid fitting, cleaned the threads, and reinstalled it (Loctite 567). Once I had close to the right torque, I slowly rotated the fitting while testing the fit of the flared tube. It was easy to check the alignment by just feeling how much resistance I had on the b nut. Once it fit freely, I stopped rotating the fluid fitting and torqued everything up.
Clearance from the snorkel is perfect.
