Engine Analyzer Question/Lean vs Rich of Peak/Engine Longevity

[gwbraly]

Kevin,

The twin argument might well be correct, but it might not.

For example, how many of those twins had the fuel flow set up "differently" for the left and right engine, so that they experienced very different internal cylinder pressures on each takeoff and climb?

Clearly TCM is having problems with valve fit and geometry.
We saw one 78 hour TTAFE Bonanza that had a prop strike. On engine tear down, the #6 exhaust valve was wobbly in the valve guide - - at 78 hours of run time.

Regards, George