Engine That
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How might an engine in a car crack in cold weather?
When water alone (instead of engine coolant, which contains water and other substances) was used in automobile radiators to cool cast-iron engine blocks, it sometimes happened in winter that the engine block would crack, ruining the engine. Cast iron is not pure iron and is relatively hard and brittle. Explain how the engine block in a car might crack in cold weather.
because the walls are thinner around the water jackets and water expands when freezing and if its too far away from a freeze plugs, which gives way before the block, then the block cracks or becomes to weak and when the engine is turned over the weakened metal cracks due to the change in pressure and rapid change in heat
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