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A comment on Porsche found a way to 3D-print lightweight pistons that add more horsepower. Parent comment

Re:Porsche found a way to 3D-print lightweight pistons that ... by sbayeta on Monday July 13, 2020 @10:56PM (#23827996)
Molds are expensive, so you have to spread the cost over many produced units. Probably if not many cars are made, cost isn't very different.

Regarding the extra 30hp, I think they probably come from the ability to slightly increase the RPMs because of the weight reduction.

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