THIS IS YET another article about an engine rebuild, in this instance a Lycoming O-290G, performed by myself and the kids at the Youth Build sessions. What, you may be asking, is a “G” version, why am I even messing with it, and how is it possibly relevant to you? Read on.
Back when the earth was still cooling, when most TV shows were still in black and white, and shortly before I sprang forth on the planet, John Thorp designed a historic homebuilt airplane, the T-18, and he designed it around the Lycoming O-290G. The “G” was for the ground power units used on aircraft start carts, but as the newer jets were coming into service, the O-290G engines weren’t up to providing enough starting grunt. The GPU engines began…
