How much to lean the mixture?

Ron Levy said:
When there is conflict like that, I'll stick with the more conservative approach, in this case, waiting until above 5000 DA.
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Why do you consider that more conservative? What are you conserving?
 
Ron Levy said:
Engine temps. Lean too much at full throttle and you can cook it.
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What are you trading for that though? While you reduce short term issues, you magnify long term ones and add some short term maintenance costs not to mention adding a fair percentage of cost to every flight in wasted fuel. There really is only one solution to the issue and that is FADEC.
 
Tom-D said:
If you are Cooking the engine, you are not lean enough.
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If you get so lean that CHT's are going down again to a significant degree, then you are way lean of best power with a carbureted engine. See the power curves in Lycoming's Key Reprints for details.
 
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