22RE timing chain replacement
 

I had never done this before, let alone know what the chain did. My Uncle a certified mechanic helped me diagnose a bad engine sound, being a broken timing guide, and I set on the project myself. It took me two full days, with the Factory Service Manual, Haynes Manual, and 4crawler.com's step by step, but I did it! She runs like a top. And is nice and clean. So don't think you can't do it. With the right material, and a few internet video's to get some background info, it can be done.