Paul Folbrecht wrote:
Another real drawback I learned of is the decrease of TBO from 2400 to
2000. But thanks.

/snip/

Paul,

Unless the airplane will be flying under part 135 or 121, the TBO figure
is meaningless. We routinely flew our engines 3500-4000 hours between
overhauls. This, of course, was only acheivable due to the high
utilization rates (about 100 hours per month, year-round). Your mileage
probably WILL vary, but I really don't think the Sparrowhawk conversion
has any meaningul effect on the engines life, other than the prior
mentioned ring issue.

Remember, to get the 2400 hour "TBO" on a regular O-235 L2C, you must
use a specific heavy piston part number, as well as "100% Genuine
Lycoming Parts" throughout the rest of the engine. Install even one
aftermarket valve cover gasket, and *poof*, the "TBO" magically drops
back to 2000 hours. As I said, meaningless...

Happy Flying!
Scott Skylane
N92054