On Tuesday, April 19, 2022, 11:06 AM, Ryszard Zadow <ryszardzadow@...> wrote:

< 2000 hr TBO refers to the bottom end. Cylinders are routinely replaced many times before an “overhaul”>

Nope. That statement doesnt apply to most the engine I’ve had and many that come through my shop.

> On Apr 19, 2022, at 12:14, One Sky Dog via groups.io <Oneskydog=aol.com@groups.io> wrote:
>
> Apples and oranges. 2000 hr TBO refers to the bottom end. Cylinders are routinely replaced many times before an “overhaul”