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A hypereutectic piston is an internal combustion engine piston cast using a hypereutectic aluminum alloy with silicon content greater than the eutectic point of 12 weight percent silicon. Most aluminum-silicon casting alloys are hypoeutectic (Si content lower than the eutectic point) and contain relatively fine elemental silicon crystals formed through the eutectic reaction during solidification. In addition to fine silicon crystals, hypereutectic alloys also contain large primary silicon crystals that form before the eutectic reaction, and as a result contain a much higher phase fraction of silicon. Consequently hypereutectic aluminum has a lower coefficient of thermal expansion, which allows engine designers to specify much tighter clearances. The silicon content of these alloys is typically 16-19 weight percent, and above this content the mechanical properties and castability degrade substantially. Special moulds, casting, and cooling techniques are required to obtain uniformly dispersed primary silicon particles throughout the piston material.
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A hypereutecticpiston is an internal combustion engine piston cast using a hypereutectic aluminum alloy with silicon content greater than the eutectic...
attached to a 4.3L LB4 V6 engine featuring upgrades that included hypereutecticpistons, nodular iron main caps, upgraded head gaskets, intake manifolds...
a piston crown, resulting in more repair work. Cracking pistons were a problem and usually started on the thin edge of the fuel bowl on the pistons. It...
aluminum heads. The M62 has fracture-split forged connecting rods, hypereutecticpistons with ferrous coated side skirts. Most of the M62 engines used Alusil...
Cylinder block Cylinder head Flywheel Head gasket Hypereutecticpiston Main bearing PistonPiston ring Reverse-flow cylinder head Starter ring gear Sump...
lighter hypereutecticpistons and the car received factory frame improvements. While the hypereutecticpistons provided less expansion, the forged pistons were...
metal fragments, fuel, and combustion products into the oil system. Hypereutecticpistons are known to break easily from such shock waves. Detonation can...
Alusil as a hypereutectic aluminium-silicon alloy (EN AC-AlSi17Cu4Mg / EN AC-48100 or A390) contains approximately 78% aluminium and 17% silicon. This...
model year all pistons were totally redesigned. Both engines used the flat top pistons with 2 valve recesses and featured a new hypereutectic design with...
valuable property in an extreme application such as the hypereutectic cast aluminum pistons used in the high-revving 550 hp (410 kW) twin-turbo intercooled...
those of the 351 Windsor engine. Camshaft: Variable valve timing Piston: Hypereutectic aluminum alloy Connecting rod: Cracked powdered metal Crankshaft:...
connecting rods and crankshaft are constructed of steel. The pistons are hypereutectic. The FV2400-2TC derivative is one of the few road-going engines...
substantial amount of money at the time. Reynolds Metal Co. developed a hypereutectic aluminum alloy called A-390, composed of 77 percent aluminum, 17 percent...
need for an aluminium alloy suitable for making engines, particularly pistons, that would have the strength of duralumin but could retain this when in...
of the EJ207. Unlike the EJ207, it features hypereutectic cast pistons as opposed to the forged pistons in the EJ207. The steering rack is the standard...
crankshaft is forged steel using powdered-metal connecting rods. Pistons are high-silicon Hypereutectic Aluminium alloy replacing the forged aluminum used in the...
and the eight connecting rods were forged steel. The pistons were cast aluminum, with a hypereutectic design. Cylinders were numbered from the front of the...
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