[honway]

What engine are you considering?

I was talking to a guy awhile back who was building an amphib and his plan was to put in an engine that used standard gasoline. Is that rare in the home-built world?

[hattend]

The plane is designed for the Lycoming O-320 160hp. That's what I will be getting. Haven't decided whether to go new or look for a mid-time engine yet.

You can go smaller (down to 120hp).

Engine/prop choice is probably a year or so down the road...it will definitely be an O-320, still debating the cost and additional complexity of a constant speed prop.

[hattend]

I was talking to a guy awhile back who was building an amphib and his plan was to put in an engine that used standard gasoline. Is that rare in the home-built world?

I am by no means an expert in the homebuilt world. My experience is helping to build a Thorpe T-18 in the 70's and helping rebuild a wrecked Super Cub.

You can get engines certificated for car gas. Since this is my first plane I will be following the directions to a "T".

Like you, if I win the lottery and can get a fleet of planes to experiment on, I may start thinking outside the box. :-)