When it comes time to replace your engine, you might wonder if it's cheaper to buy a crate engine or try to build one ...

Now $69, down 30 percent off its usual $100 sticker price, this miniature engine kit seems to suggest otherwise. Get It! Made ...

The $29.99 all-metal desktop Stirling engine kit is one of the simplest. It can be assembled in 15 minutes and is recommended for ages 14 and up. Also for $29.99 is the Exploring Kid Steam Engine Kit.

It shouldn’t come as much of a surprise, then, that you can also still buy and build the Visible V8 model engine kit, first ...