since no one gave any f**ks that little engine is the rowdiest meanest asshole chihuahua.
i knocked the casting out of the ports, and it's running the newer tecumseh carb, small stock intake (smoothed and portmatched), lightweight flywheel and the thin headgasket. i have to hold the board down with my feet or it'll hop across the yard faster than i can catch it. i need to make an adapter to run the other intake and larger carb, but that'll have to wait until i get my tools here. mockup on minibike with sidecar later.
have a this:
and a this: