In article ,
John Roncallo wrote:

Does anyone have any experiance with the Pann Yan 180 HP engine conversion.

I've flown a couple different non-XP/SP 172s with 180hp engine upgrades.
I don't know if they were done by Penn Yan.

3) How do you like it?

You can really tell the difference, especially in takeoff and climb.
Takes a very long time to level off, since the fixed pitch prop keeps
accelerating (and producing more power) as you accelerate. When I
finally realized what was going on it was a great demonstration of the
usefulness of a constant speed prop.

4) Does it really go 151 MPH

The ones I've flown don't. Maybe closer to 140-145mph, but I've never
done any real tests.

--
Ben Jackson

http://www.ben.com/