318 timing chain.....and why the engine should come out.

Damn.....
All this time I thought they stayed put. So how does that work?

I’ve been taught that the up and down of the pistons cause and egg shape.......and that when you put new rings In the worn out bores, you get a lot of blowby , because the new rings are round and the bore is oval.

I thought the rings were the ones that form fitted to this egg shape and created it. .....and to do that they had to stay in one place. I see now this is wrong but don’t understand it.

If they turn in circles....why would the bores create an egg shape and the ring stay circular......and if that’s the case....do new rings really create blowby?

So they don’t have to go back in the exact way they came out? And I can clock them any way I want ? They definitely had no pattern coming out...

Also.....just for learning experience. Will putting these old rings back in cause any problems. Like......I take them out.....put them back in and disrupted a pattern or spring tension. Now they won’t seal?
I guess I can just give it a shot and see how it goes.