QUESTION: Thanks for your great column. It is wonderful having a resource like yourself. My question is regarding an intercooled TIO-540-S1A installed in an Aerostar 601P. The right engine MAP has been rapidly increasing past the 29.5″” limit. This has... Continue Reading →

QUESTION: After an engine overhaul, it is recommended that the engine be run at high power settings for 50 hours during the break-in period and oil consumption, etc., is to be monitored. My question: Is there any advantage or requirement... Continue Reading →

QUESTION: I have one of the very early O-320s with no suffix. Can you enlighten me as to what modern engine code I should use to buy parts for it? I went to the Lycoming website and it lists the... Continue Reading →

QUESTION: I have a Rotax 912 and am concerned about lead buildup in the engine using 100LL. Will TCP reduce the problem? Continue Reading →

QUESTION: I have a 1975 Piper Warrior with a Lycoming 0-320 E3D. On the way to Oshkosh I lost oil pressure and made an emergency landing (aircraft and I are OK). At first I thought I had lost the front... Continue Reading →

QUESTION: I have a vibration problem with my IO-540-C4B5. I had a computer analysis done and it seems to be the engine instead of the prop. The test showed to add 96 grams at the 72° position and this seemed... Continue Reading →

QUESTION: I have a 1968 Mooney-F with an IO-360-A1A. The oil cooler was relocated to the J model position with an STC and the cowl openings have been changed to the J-model size. I have sustained oil temperatures of 206°-210°... Continue Reading →

QUESTION: I have a chance to buy an engine on eBay that is a good deal for me. I have a Cessna 152 with a Lycoming O-235-L2C and am looking for a replacement. Continue Reading →

QUESTION: I’m thinking of purchasing a C150 with an 0-320 engine, serial number 4800-027. It may be a D2J. Continue Reading →

QUESTION: I just read your article on the history of the 0-320-H2AD engine (What engines should I avoid, Dec. 24, 2004, issue). I have had three Skyhawks with the later engine (two 1977s and one 1979) and have had no... Continue Reading →