I can attest to the possibility of a LONG TERM water filled engine actually rotating by hand with the water still in it...
I bought a used Kawa Jetmate. Its engine well has half the engine below the level of the drain plug. I expected things to not be too bad because of the engine turning by hand (and water coming out the spark plug holes). Nope.. there was no useful part in the engine. Not even the block.
I bought a used Kawa Jetmate. Its engine well has half the engine below the level of the drain plug. I expected things to not be too bad because of the engine turning by hand (and water coming out the spark plug holes). Nope.. there was no useful part in the engine. Not even the block.