Q: Hello, Paul. I live in South Africa, Johannesburg. I love reading your articles on engines. You have wise words. Thank you.
I have an RV-6 built by myself and my brother-in-law. We fitted a Lycoming 032-B2C that got overhauled after 560 hours by Alton Engineering.
I believe you will be able to help me with the following:
- The engine now has 47 hours since new. The temperature seems to stay between 200° and 225° Fahrenheit. Is this correct?
- I am still using straight 100 run-in engine oil.
- I replaced the oil at 5 hours, then 12, then 20, then 31, and just now at 46 hours again. I just want to be sure with this new engine the oil and oil filter is and stays good during the break-in cycle.
- The engine starts first time every time, idle is good around 600-700 rpm.
- I have fitted a metal fixed pitch prop supplied by Van’s Aircraft.
- I have also fitted the next bigger oil cooler supplied by Van’s after five hours due to the temperature staying around 200° Fahrenheit in cruise, but it will climb to 220° to 225° doing circuits.
- When do I change to the next type of oil and what is best for this engine?
- Are the temperatures I am seeing normal? If not, what can be done to bring the temperature down?
- This engine has a conical mount. Is there a way to balance this engine better? I seem to pick up a vibration around 2000 rpm. Everyone I have spoken to blames the engine mount, which I know is true.
- There is an AP who has an electronic instrument that gets mounted on top of the engine. You then run the engine and this instrument tells you where to add some weights on the ring gear (149) to reduce the vibration. Do you know this instrument and will it be safe to use on this engine?