If you can cheaply find a copy of this book(I doubt anyone can, but it's worth a try), it's probably worth it, if not you can still google the subject: https://

If you can cheaply find a copy of this book(I doubt anyone can, but it's worth a try), it's probably worth it, if not you can still google the subject: https://hackaday.com/2019/09/11/books-you-should-read-exact-constraint-machine-design-using-kinematic-principles/ https://hackaday.com/2019/09/11/books-you-should-read-exact-... I've never touched an engine before so I'm not sure if this is relevant(I don't really know what skills go into an engine rebuild beyond basic repair methods) but it's great for general mechanical design as a hobbyist.