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Piston Basics Cast Piston Up Close

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A close up of this cast piston helps explain why they're both inexpensive and designed for light-duty. The cast surface tells us this piston won't stand up to extremes of temperature and rpm because the molecular structure isn't as tight as we find with hypereutectic and forged.
Piston Fundamentals

 A close up of this cast piston helps explain why they're both inexpensive and designed for light-duty. The cast surface tells us this piston won't stand up to extremes of temperature and rpm because the molecular structure isn't as tight as we find with hypereutectic and forged.  View Related Article

 

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