Can I install a constant-speed prop on my engine!

Posted on February 16th, 2007 by

I have a Lycoming O-360-A3A in my Cherokee. According to the Type Certificate Data Sheets (TCDS), this engine is similar to an -A1A, except without provisions for a constant speed prop. Nevertheless, it is equipped with a hollow crankshaft, and... Continue Reading →

EGT: What’s normal

Posted on February 2nd, 2007 by

I own a 1974 Grumman AA-5, SN550. Last winter I had the engine (O-320) rebuilt. I have a question about EGTs. Continue Reading →

Are dual mags reliable?

Posted on January 19th, 2007 by

I own a Cessna R-182 that has a Lycoming O-540 J3C5D engine. It seems like a great engine and runs well. I have a concern about the “”dual-pack”" type magnetos that run off a common gear. Yesterday, another pilot told... Continue Reading →

And now, the rest of the story: An update on increased levels of copper in oil

Posted on January 5th, 2007 by

After my Nov. 3 column, “”Why are there increased levels of copper in my oil?”" was published, I received some valuable advice from industry experts on the subject. Continue Reading →

Where are the expert answers? Unhappy reader tired of being told to “”look it up”"

Posted on December 1st, 2006 by

I am having a hard time finding any usefulness in your column. People ask specific questions and you tell them to look it up. As a reader, I would like to see some sort of expert answer to their questions.... Continue Reading →

Why are there increased levels of copper in my oil?

Posted on November 3rd, 2006 by

Recent oil analyses seem to be showing increased levels of copper coming from my XP-360. Could you help with a diagnosis? Continue Reading →

What STCs are available for my engine?

Posted on October 20th, 2006 by

Can you give me an idea of what STCs are available to convert an O-320-E3D from 150 to 160 hp? Continue Reading →

What’s the best way to really test a mag?

Posted on October 6th, 2006 by

I often hear from U.S. mechanics that in their opinion the only way to really test a mag is to do it while flying. They say that’s because you can really get the highest rpm, say 2,550, and then do... Continue Reading →

Why are some Lycoming engines built without oil filters?

Posted on September 8th, 2006 by

My friend and I were discussing why many Lycoming engines were built without oil filters, just oil screens. He guessed it was because in the beginning they just didn’t have oil filter technology, and once certified, the engine design is... Continue Reading →

Assembling a fuel-injected engine: What about sealants and fuel line routing?

Posted on August 18th, 2006 by

I have nearly finished assembling a Lycoming O-360 that will be fuel injected. I am trying to find information regarding what kind, if any, sealant I should use and how to apply that sealant should one be used. I am... Continue Reading →