Sounds like a problem in older wet sleeve engines called hydraulisis. The sleeves actually strech and contract when the cylinder is in the Power Stroke. When expanded on the rod thrust side the sleeve pushes coolent away, when it contracts it causes a void and air bubbles form on the sleeve. When the power stroke occurs again the air bubbles explode working simular to a water jet cutter. Anyone who has ever rebuilt wet sleeve engines has seen this pitting on one side of sleeves. Todays modern engines now support the sleeve midway down rather than the bottom to reduce this problem. O ring deteriation is a result of movement of the sleeve base grinding sediment between the block gland, O ring, and the sleeve. This lower sleeve movment could also cause the top sleeve gland to crack on some engines. Coolent filters and chemical treatments were developed to reduce this phenom.
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Today's Featured Article - A Cautionary Tale - by Ian Minshull. In the early 1950s my father bought an Allis Chalmers B and I used it for all the row crop work with the mangolds and potatoes, rolling and the haymaking on our farm. The farm and the Allis were sold and I have spent a lifetime working on farms throughout the country. I promised myself that one day I would own an Allis. That time event
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