Thank Bert. The accent sound better in person. Trying to read it, I think I get it.
Much work, with 1 & 5 chance for a successful outcome. Not very good odds. Especially with all the work that needs to go into it putting everything back together, and hooking it all back up.
If I do anything. I doubt it'll be with the crank itself. As I see no way of any sanding evenly. So only the block.
I'm curious about one thing in particular. This is a solid steel crank rotating at a high RPM on an aluminum housing. Hardened aluminum, I suppose. That's amazes me.
BTW, the engines getting cheaper while the costs increase. That's not normally the American way.
Do as little to the case as possible
The acid / alkali will eat off all of the built up aluminium on the steel which as mentioned will need just a tiny polish
The aluminium is a lot softer which is why it can be used as a bearing surface .
Oddly enough push mower engines are usually fine because the crank does not have belts dragging it to the back
So it is profitable ( sort of ) to fix a seized push mower engine but not worthwhile on a ride on engine that is 10 times the price.
Where I got caught out was I forgot to allow for the increased clearance when the cases got to full temperature
So the engine ran fine on the bench and fine when tested for a few minutes around the yard but failed when the customer started using them for an hour.