Well, like many I have tackled the timing chain replacement since my car has over 100,000 and in the last few days and while not complete I am going to offer some comments that should add to that video. First as it stands the video is great, but what it does not tell you is there is a ton of work to get to the place where you can do the timing chain, and besides the work, there are lots of decisions along the way. Here are some things to consider
1) To remove the valve covers you have to remove the fuel lines, the vacuum lines, maybe the brake vacuum line, and of course the power steering pump. And its not just the pump, there is also a bracket that the pump connects to. For me I also drained the power steering fluid before I removed it since I did not want to take the chance of fluid all over and I was doing to change it anyway. You also have to remove the fan and radiator shroud before you get too far. Oh I forgot you probably should drain the coolant and maybe remove the radiator. So far I have not removed the it but leaving it in is fraught with danger. One slipped wrench and its new radiator bub!
Next you should look at the hydraulic canister on the front fender near the power steering pump. Chances are the return hose leaks and it should be replaced. While its out you should drain and clean that as well.
2) On the passenger side, remove the battery, remove the alternator, then the alternator bracket, then of course the distributor. Yo also have to remove the device connected to the throttle body and which is also on the alternator bracket
While none of this is difficult, it does take time and adds to the overall project and here are where the other decisions come in. Some are:
1) Of course since you see the fuel lines they are bad so you have to replace them. And while you are moving things many of the vacuum lines are brittle so they break no matter how careful. Me I notice the high pressure power steering hose is bad so that goes into the mix. Since I have the power steering pump out I might as well replace the seal and do the rebuild. Same is true with the return line to the leveler hydraulic tank. It leaks so I have to replace that. Now that I have the valve covers off I can see the monovalve. Wow those hoses are 30 years old should I replace those? They are sure a pain to get at but with the battery out, and valve cover off its much easier. We will see. Since I also have the valve covers off, at $6.00 I might as well do the valve seals. Jeez adding up here. Last I need to decide whether to replace the crank sensor. Its fine now but with everything out its easy to get at. If I wait, boy that will be a pain again. Also, since you have the radiator drained what about new upper and lower hoses, and of course the one to the overflow tank.
So what started out easy is now complicated. Yes I could wait on a lot of these things but I know I might as well bite the bullet and make sound decisions. I probably will replace most vacuum lines, both soft and hard, and most of the high pressure lines that look bad. The return lines are easy since you can buy them in bulk.
Again, the timing chain project is a lot more than the video lets on and yes some of this is just me, but I am sure most of you doing this project will run into the same process and decisions