PilotRPI wrote:During the top, they refurbished their factory cylinders. I always thought this was much worse than buying new cylinders. But then the mechanic started to explain that they did that because most of the new cylinders available have ADs and inspection requirements, where the older factory cylinders have no requirements, and they feel they were made better.
I've heard of refurbished cylinders coming apart, but maybe those were ones that were reworked several times over? For those of you that have had cylinders reworked, have you been happy with it? Any reasons to definitely avoid them?
Refurbishing cylinders is a cheaper option if thats what you mean by "much worse than buying new cylinders". New is preferable when it comes to Lycoming-built cylinders but I've seen refurbished cylinders go for years, if they are done correctly.
A friend has a commanche 250 and had all six cylinders refurbished @ about $600 each. He bought the plane with a mid-time motor and wanted to have some security in knowing all 6 had been massaged by an expert (we have one locally) and receive parts and machine tolerances that were close to new. It has worked out well for him.
The mechanic you mention is not correct in saying that newer Lycoming cylinders for 0-320's and 0-360's are having AD's and additional inspection requirements. That may be true of the aftermarket but I'm not aware of problems in the last 10 years with these new cylinders. Lycoming won't re-use cylinders in Factory overhauls but many have had success overhauling a good cylinder and getting good life from them.