Back in the '90's a large Nissan truck with corroded liners used to come in every few days, I'd go out onto the forecourt with a 20 litre bucket and drain off a bucket full of water, and every couple of weeks I'd change the filters. This truck was a water tanker, supplying household water over summer to houses with rain water tanks, working from before dawn into the night. Once the rains came, it was out of work, so I could fit new liners and pistons...too big for our shop, so working outside, in the rain. There was no damage to any engine internals, bearing or crank.
On the other hand, did an engine on a Charade GTti with a blown headgasket, it had run with water in the sump and needed a crank grind.