Quote Originally Posted by Dorsal View Post
(A) friend recently put a bigger engine in his 172 and got to increase the limit. As for changing the type certification I have to imagine that gets significantly more challenging. I believe I read, naturally can't remember where now, that once an LSA always an LSA.
A larger engine can be put on a 172 through a Supplemental Type Certificate and remain certified. My 172 has a number of STC's for upgraded equipment. While I still have the original engine I have a STC for the ECI cylinders installed during the last overhaul.

Nice looking kitfox by the way.