Hypereutectic pistons + N20...Will it work?

mackey said:

As long as the tune is good you should have no problems.

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304billet said:

The hyper's can take only 400rwhp safely. Beyond that ur pushing it. The stock block and stock internals r good to around 500rwhp.

Bottom line is if ur hitting 300/300 @ the RW and u throw on a 150 shot it won't last long. Keep the shot under 100.

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Michael Yount said:

Hypers have upsides and downsides. They are harder and in some ways actually stronger than forged pistons. They are also thermally MUCH more stable - so they can be sized to fit in the cylinder much tighter than forged - be sure your machinist knows which piston you're using before you do final cylinder sizing.

Because they're harder, they're more brittle than a forged piston - the forged units have much more ductility. Consequently, when things do go wrong - for example a lean-mixture induced detonation in the cylinder at high rpm -- the hypers tend to break or shatter; the forged units are more forgiving. In layman's terms -- the forged units bend, the hypers break. When you have a catastrophic piston failure at speed, it tends to take out a bunch of other stuff too. When the forged unit fails, you might lunch the piston, but not significantly hurt much else.

That's why people tend to say don't use hypers under boost or with nitrous. And also why they say if the tune is right, they'll likely hold up fine.

So the question is simple -- how certain are you that you can absolutely control mixture in the chamber under all circumstances? And by the way -- looking for "cheep" pistons for a nitrous application is an accident waiting to happen.

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