Join Date: Jan 2013
Location: Montreal, QC, Canada
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Re: Overpropped; What to do?
Lets say an overpropped engine lowers it's WOT rpm, but brings its operating RPM much closer to this lower WOTrpm, the result is a higher fuel consumption and greater wear per hour.
Time to destination, usually suffers if you are trying for the greatest MPG.
Detonation blows head gaskets.
I was listing a number of reasons to counter the statement that " to get maximum efficiency we should be overpropped". There are many maximums and some are opposites.