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The KB Silvolite cast hypereutectic pistons (left) further reduce reciprocating mass by 38.6 grams each, compared to the stock Dodge cast-aluminum slugs (989 versus 1027.6 grams). They also raise compression from 8.2:1 to 9.75:1. The beauty is that because the hypereutectic piston incorporates over twice the silicon content of standard piston alloy, the thermal expansion of the material is less than that of traditional cast or forged pistons. This feature allows closer piston-to-wall clearance, which stabilizes the rings for better sealing and prevents piston slap, prolonging skirt life. View Related Article
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