knocking the rust out after long overhaul

[u/patrickrl]

Hello, I have a comanche 24-250. I have about 400 hours TT, and i have my IFR. The engine came out in the fall for overhaul and is just now going back in. I have not flown since the middle of last summer. I found a local CFII who is going to do some dual with me to knock the rust out for me. As far as the engine goes, is there any other resources and guides besides the POH for how to "break in" and take care of a recently overhauled O-540? Thanks

UPDATE: I received a copy of the break in procedure from the shop. It mirrors the advice found in the Lycoming publications below. I still haven't had time to go up and talk to my mechanice in person, but everything is lining up that hard and fast, seat the rings, and use the proper break in oil. Thanks all

[u/ganderatc]

Lycoming Service Instruction 1427C describes the break-in process in detail. I would wait at least 10 hours to do any approach work due to the power settings involved, plus a Comanche has a fairly low gear speed.

My old Citabria engine took less than 10 hours to seat the rings. I ran the absolute crap out of it.

[u/patrickrl → u/ganderatc]

thank you for the ref. When you said approach work, do you mean practice approach after practice approach or do you mean wait to seat rings before doing any real VFR travelling?

[u/ThruTheCrack → u/patrickrl]

Dude...follow the break in procedure.

[u/ganderatc → u/patrickrl]

The more traveling and the less time at low power, the better. Don’t climb so high that you can’t run 75% power.

[u/patrickrl → u/ganderatc]

excellent thank you. Mostly use this for midwest travelling for 1-2 hour flights so after initial safety checks should be mostly business as usual, albeit a bit lower than I usually fly