On 2/2/2020 10:09 AM, Kayak via KRnet wrote:
Hi Joe, what was the original O-320 compression ratio and HP. IIRC there
was 150 and 160 hp. I'm wondering how you'd notice what looks by numbers to
be a relatively small increase. How much did top speed and climb rate
change?
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
I'm not Joe but my 0-320 in the Tripacer was the 150 hp model. I found
no detectable difference in performance between auto fuel and 100LL
other than auto fuel seemed to run cleaner as far as engine deposits
went. Same on the performance of the 0-200 in the KR. Both engines
were of the moderately low compression type and didn't require a high
octane fuel. When it came to performance there was not way to tell what
type fuel I had in the tank. With two such basically similar fuels it
comes down to two things: what is the octane requirement and how will
the chemical makeup of the fuel affect the fuel system. I think those
two concerns hold true for any engine of any compression ratio.
Larry Flesner
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