Lycoming o-340

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John Taylor
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Lycoming o-340

Postby John Taylor » Tue Mar 14, 2017 8:05 pm

:rebel: Ok, so the lycoming o-340 produces 170 hp with 8.5:1 compression pistons so what does it produce with 9.5:1 pistons????

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Re: Lycoming o-340

Postby mojoe » Wed Mar 15, 2017 3:44 pm

More :thumbleft:

If it were purely a mathmatical equation:

Compression ratio times a constant X = Hp





So if it were purely a mathmatical equation, the 9.5:1 pistons make a 190Hp motor.
Of course, I have no reason to believe it is that direct of an equation, but thank for playing along!
Airboating is like marriage: There are unlimited ways a person can be right, and somehow still be wrong at the same time!!

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Re: Lycoming o-340

Postby pirate » Wed Mar 15, 2017 4:36 pm

Any number of folks on here say "the prop tells the tale." Or words to that effect. Short of that or dyno testing, it's a crap shoot as to HP.....first liar loses.
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