On a new or overhauled engine, break-in is ideally done with a high power setting. I've seen some guys advocate "run it like you stole it" and others say 75% power. At my location, maintaining a couple thousand feet above my private strip, about 85% power is the best I can do and that's running wide open throttle with the RPM at 2650. Is this really the desirable way to do it, or is 24"/2400 a more reasonable and acceptable way to build time on the engine for break-in?
I had a high oil temp indication on my first flight, I was running it like I stole it and it climbed up to 230F before I pulled it back. The temp dropped slowly at 75% power so I'm thinking this is simply a break-in heat load and I'll eventually be OK.
I also have some window screen that I put in the 4" duct for the oil cooler coming off my plenum to keep bugs and debris out - I'm going to remove that before the next flight to improve airflow, at least until I know my rings are set and the oil temp comes down.
I had a high oil temp indication on my first flight, I was running it like I stole it and it climbed up to 230F before I pulled it back. The temp dropped slowly at 75% power so I'm thinking this is simply a break-in heat load and I'll eventually be OK.
I also have some window screen that I put in the 4" duct for the oil cooler coming off my plenum to keep bugs and debris out - I'm going to remove that before the next flight to improve airflow, at least until I know my rings are set and the oil temp comes down.