costs about 225+vat from another place, which is a lot cheaper than sleeving a block which costs 1.5-2k
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(obviously it won't be as strong but it's still a good option).
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used for all sorts of things including motorsport
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"Cryo treating completely stress relieves the block and actually strengthens it by increasing the amount of martensite
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(a hard crystalline variant of steel) carbide inclusions within the metal.
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It also rearranges the metals molecular structure into a better symmetrical crystal matrix with more complete molecular bonds that further helps strengthen the block.
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These microscopic changes also increase abrasion resistance and the lubricity of sliding surfaces, thereby reducing friction.
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You can expect much longer wear of the cylinder bores as well as improved dimensional stability under all conditions.
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The improved dimensional stability improves head gasket and piston ring seal.
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Cryo-treated blocks can make up to 6 percent more power just due to better ring sealing and less internal friction alone.
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In many ferrous metal applications, cryo treating can increase wear resistance by over 800 percent, fatigue strength by over 100 percent, and tensile strength by up to 25 percent.
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The typical increase of wear resistance in cast iron like our block is 100 percent.
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"
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