Are hypereutectic pistons forged or cast?

Hypereutectic (Cast) Aluminum Pistons The hypereutectic piston is also a cast piston, but with added silicon (approximately 16 percent), to produce a harder, maore wear resistant version of the standard cast piston.

Are hypereutectic pistons better than cast?

Hypereutectic pistons maintain their strength under high-heat conditions better than standard cast pistons. Although not as strong as forged pistons, hypereutectic pistons offer increased strength that raises piston reliability at a lower cost.

How can you tell if a piston is cast or forged?

Look at the underside of the pistons. The unmachined areas of a cast piston will be somewhat rough looking (not as rough as an aluminum intake manifold but simliar) where a forged piston will be smooth.

Are forged pistons lighter than cast?

It is true that forged pistons are heavier than cast pistons, but this is counteracted by the ability to provide a high compression ratio inside the engine, enabling the engine to rev higher and produce more power.

Is hypereutectic forged?

For this reason, hypereutectic pistons can run a tighter piston to cylinder clearance than forged pistons. This makes hypereutectic pistons a better choice for stock engines, where longevity is more important than ultimate performance. Some vehicles do use forged pistons from the factory.

How much horsepower can cast pistons handle?

Stock cast pistons will limit you to 5800rpm, but cast pistons will hold more than 500hp. It is good to 7000 for forged pistons.

What’s the difference between forged and hypereutectic pistons?

Compared to both 4032 and 2618 alloy forged pistons, hypereutectic pistons have less strength. Therefore, for performance applications using boost, nitrous oxide, and/or high RPMs, forged pistons (made from either alloy) are preferred.

How much HP can a cast crank handle?

500 hp
For small-blocks, a safe limit for a cast crank is 500 hp and a maximum of 6,500 rpm. With big-blocks, their bigger mains will handle 650 hp. We’ve seen cast cranks in turbo motors take over 2,000 hp, but we don’t recommend it. These days, 4340 is the standard for forged cranks.