Dan,

Barrett measured my hp on exactly the same engine at 2700 rpm on a dyno at 329 hp. I think Munson made some form of a measurement at 2800.

Ralph



On Jan 17, 2012, at 12:21 PM, Dan Ballin <dballin@gmail.com> wrote:

> Anyone have thoughts about how to calculate horsepower on a 10:1
> compression IO-550.  Other than having it dyno'd, is there a way to
> figure out how much HP I am generating.  How would I figure out what
> 75%, 80% etc is?  I know fuel flow is a reasonable way to estimate HP
> but what would I use as a conversion factor.
>
> I know this is pretty basic, but I am trying to set up my MVP 50 to
> read out a realistic HP% number.
> Yes it is a Performance Engine and no I don't believe their claim (an
> stamp on the engine plate) of 370 HP.
>
> Thanks
>
> Dan Ballin
> N386DM
>
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