Water in my engine oil. Where could it come from ?

[J and M Machine]

Originally Posted by ursus

I have just the valve chamber cracks depicted by J & M Machine. A machinist said that these would be problematic for pinning as he would be drilling into the cylinder. Since there is no water pressure, could the problem possibly be fixed with the newer block sealer products such the Fiber-Lock stuff made by K & L?

Ursus: Actually we repair these with metal stitching. The crack goes around the cylinder so no need to drill into it. In order for the stop leak products to work the crack has to stop traveling.
http://www.jandm-machine.com/metalStitching.html