DonMuncy Posted September 13, 2017 Report Share Posted September 13, 2017 I was just reading my latest edition of General Aviation News, in which a reader, in a letter to the editor, states that during break-in of a engine he can hear not only the change in pitch when the rings become seated, but can hear each cylinder as it seats. Has anyone ever heard such a pitch change, or even heard anyone claim to have heard it. I would say he is exaggerating beyond belief, except that it seems that many people are a lot more sensitive in their perceptions than I am. Quote Link to comment Share on other sites More sharing options...
carusoam Posted September 13, 2017 Report Share Posted September 13, 2017 Interesting... I was hoping to measure a change in CHTs during the break-in process... No joy there either... My engine went through a few hours of break-in off and on the plane before I was involved. It probably was noticeable to a person that has done a few break-in flights... I'm pretty good at sensing valve tap on some of my older vehicle engines... does that count? Best regards, -a- Quote Link to comment Share on other sites More sharing options...
Rustler Posted September 13, 2017 Report Share Posted September 13, 2017 Don-- My guess is that this guy was from Colorado. They have leafy green engine break-in enhancement tools for sale there. Quote Link to comment Share on other sites More sharing options...
jaylw314 Posted September 13, 2017 Report Share Posted September 13, 2017 20 minutes ago, Rustler said: Don-- My guess is that this guy was from Colorado. They have leafy green engine break-in enhancement tools for sale there. It took me a little too long to get that one! Quote Link to comment Share on other sites More sharing options...
RLCarter Posted September 13, 2017 Report Share Posted September 13, 2017 1 hour ago, DonMuncy said: I was just reading my latest edition of General Aviation News, in which a reader, in a letter to the editor, states that during break-in of a engine he can hear not only the change in pitch when the rings become seated, but can hear each cylinder as it seats. What a goofball, if the feds read that he might be going in for a Psychological evaluation Quote Link to comment Share on other sites More sharing options...
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