Whats the difference between forged pistons and regular pistons?

Question

Same with the crankshaft. Whats the difference between a forged crankshaft and a regular crankshaft? Which one would be better to put into a 350 V-8 Smallblock?

Answer 1

When a component is cast, molten metal is poured into a mold. The resulting component is then machined to provide the final finish and possibly machine holes etc.

When a component is forged, it is formed by plastic deformation of the metal (usually at high temperatures). The resulting component is then machined to finish.
In mass production, closed die forging is used in which the metal is placed in a closed mold and shaped using high pressures.

A forged component will be much stronger than a cast component. The only time that you would want to use forged pistons or crankshafts is when you are really trying to get the maximum out of a motor. Unless you are building a very high performance motor, the expense of forged components is not worth it.

Answer 2

Forged Pistons

Answer 3

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RE:
Whats the difference between forged pistons and regular pistons?
Same with the crankshaft. Whats the difference between a forged crankshaft and a regular crankshaft? Which one would be better to put into a 350 V-8 Smallblock?

Answer 4

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Answer 5

The best thing about a forged piston is its lightness. Because a piston is always moving at high speeds, its reciprocating inertial mass is important. A forged piston has a roughly 20% smaller reciprocating mass than a cast piston. That means smoother revving engine performance. Whatʼs more, a smaller reciprocating mass minimizes vibration, which contributes to a high quality running feeling.Also, a forged piston has good durability in high-temperature use that makes it a must for race engines and other high-performance engines.

Answer 6

Regular pistons and crankshafts are milled from a rough casting. The original metal is poured into a pattern, then cut on a lathe or milling machine to the final shape and dimensions.

Forging is a process of applying pressure to shape the metal, either with a hammer or press. The process applies stress to the metal grains, which adds considerable strength to the piece.

Answer 7

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In WHAT kind of engine. CAST and FORGED are a bit old. The LATEST and GREATEST are hyper-eutectic pistons. The differences are in HOW Much the pistons expand and contract with the engine block at various temperatures. The NEW HYPER-EUTECTIC pistons have a high SILICON content and continue to keep block contact at ALL speeds and TEMPERATURES. It is race proven EUROPEAN tehcnology that REALLY WORKS.

Answer 8

Forged pistons are more dense and stable. Regular cast pistons are porous and soft to the point if used in a racing application may destroy themselves in a high compression high rpm engine.

Answer 9

i own a repair shop,and forged pistons are made of a harder material and hold up a lot better under heat and high rpm conditions also,stock pistons are good for low rpm,s and low heat conditions,,but will not hold up under certain types off engine situations,,such as high rpm,s with high octane fuels,if your building any kind of engine at all forged pistons are the best to use in it,,especially the small block Chevy,,this little engine can produce as much as 10.000 rpm ,s a minute,,and that's a lot,,so imagine the heat involved in doing this,,that's why you always go with a good forged piston,,on any engine your building,,good luck,i hope this help,s.,,have a good and safe x-mas.

Answer 10

Forged pistons are stonger and can be made lighter by cutting metal away. But sometimes, they're actually made heavier. If you get pistons that are heavier, you'll need to upgrade the connecting rods.