you're fine, lol, i understand the concern. I've already built a full sturdy roll bar on the frame and my day job is a tractor and mower mechanic so i have a fair bit of experience with these engines in particular, in my experience the conrod usually shatters before anything too terrible happens externally.
Good. I just never know if some has been fabing awhile, or is trying to bolt their frame together(true story).
im hoping its not, i picked it up yesterday and it looks like its only a 25mm, however i've only ever worked with turbos on diesels so here's to hoping.
I'm to the point of wondering if the pto clutch would work. its something I'm a lot more familiar with, I know how to wire them, how to properly mount and set them up, and that would mean the shaft diameter would be perfect for the engine. The only problem is with it instantly engaging, I might smoke a few belts.
Chains don't slip
I'm going to wait until you post what your end game is with this project until I sacrifice a perfectly sharpened crayon on this one.