alt Hacker NewsOne of my great regrets in life is not knowing anything about how to rebuild an engine (and various other car parts). It's not exactly a cheap hobby, so it's probably for the best, but I have the feeling I would love working on cars (my wife probably not so much).
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It doesn't have to be a super expensive hobby. Plenty of old cars need some love, and you can buy them (and their replacement parts) quite inexpensively. In my experience, if you're willing to learn, break a few tools and old parts, get dirty, and persevere, you'll more than likely succeed, and your bank account won't be too broken at the end of it.
(Owner of two old german cars, one which has seen a partial engine rebuild, the other significant chassis welding. No formal training doing either.)
I started last year. I had most of the tools already. I picked 90s ford trucks as my platform: cheap, plentiful, variety of models, known to be reliable, easy enough to work on with simple tools, parts still readily available, lots of YouTube material for any job I need to do.
I bought a couple and I've already had to do a lot of work.
It turns out, it's not that difficult. The systems are simple, each on their own, with few exceptions. When you isolate systems, you can just learn one at a time without pressure to be a whole mechanic. I still reserve the right to send it to the shop if needed.
I haven't had to rebuild an engine yet, but I've been all around the wheels, tires, axels, AC, fuel system, timing, vacuum lines, trailer wiring, brakes, coolant system, and of course I service all my own fluids.
I put it off way too long. My advice is to start now, if you think you'll like it. And you can start with mowers...a whole lot of the tools and concepts transfer.