I'm hoping someone can help me with some advice. I took my 1997 Maxum (5.7 Mercruiser) in for routine change of the Alpha One's water impeller, but the mechanic put the outdrive up wrong (water tube kinked--he admits his error) and the engine overheated on him when he test ran it. I don't know how hot the engine got (he claims "not too hot") but the next day when I went to start the engine two cylinders have water in them. We checked the manifold and riser gaskets and pressure tested them, and they are fine, so the mechanic took boat back to his shop and removed the head. He is still looking for the cause of the leak. <br /> I have three questions: 1) can an engine overheat so badly as to actually crack the engine block and cause water to leak into the cylinders, 2) if the problem is less serious (like a blown head or head gasket), is it reasonable to expect that the mechanic will replace cylinder heads (if so, all or just the ones that had water), and 3) since the engine was overheated, am I being reasonable if I ask the mechanic to also replace the outdrive impeller?
