The tractor, on further inspection, hadn’t thrown a rod but in fact the metal retainer that holds the bolts in place had snapped, allowing the bolts to back out. Nothing was irrepairably harmed, but it’s been a giant pain in the ass. I went to the only place that might have it, the local Ace Hardware, and the guy at the desk said “no. Why not use loctite?”

Sigh.

I’m amazed at the ignorance of people, sometimes, I really am.

I just said “I don’t have time to teach you physics” and left.

Look, you fucktard: Steel and aluminum expand and contract when heated. They do so at a different rate. When you use Loctite to try to bond aluminum and steel, it fails, especially when the unit has a dramatic thermal cycle, especially when it is used in oil. That’s why they use nuts and bolts on a lot of small engines, and that’s why this engine had a steel keeper that crimps in place once the bolts are torqued.

This is why I hate “modern” hardware stores. And this is one of the better ones in my area, futhuchrissakes.