An engine rebuild is not something that you typically do over a day or two. As you are taking the block apart you need to exam the cylinder walls, piston skirts, rod and main journals on the crank. Most times this will involve some precision measuring tools.
Now, this is completely doable in your home garage, if you have th knowledge and tools to do it. Like stated above, most times some type of machine work will be needed during the rebuild.
It could be any of the following and maybe more:
- crank journals turned
-cylinders bored and/or honed
-mains align honed or bored
-deck resurfaced
-new cam bearings and freeze plugs installed
-heads decked
-valve job, valve guides
-springs checked
The list gets plenty long. I have built a couple of engines at home and I always end up at the machine shop for the things that require high dollar machinery. If you really want to do it at home, spend the next few months studying up on the how-to's. You will then understand what to look for and what to expect with the budget and machine shop.
Now, there are some who do the down and dirty re-ring, hone and bearings and have good success, but you need to know if you fall in that category when you take it apart.
Joe