On Thu, 05 Oct 2006 19:35:30 +0000, papenfussDIESPAM wrote:

but most STCs I've seen do not allow a gross weight increase with
a larger engine.

We've two 172s upgraded to O-360s (180HP). Penn Yan's STC, fixed pitch,
and a 100 lb gross increase.

I cannot give much comparison, though, to 160HP 172s as I only flew them
during my PPL training and I simply don't recall. I think that, then, I
was too astounded at the flying to consider the quality of flying.

- Andrew