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4032 is cheaper and is OE with most sports car manufacturers from Mahle, hence why they use 4032 more often. Most Formula 1 motors use the super exotic aluminum beryllium alloy, but Cosworth ran 2618 in their last F1 motors. It's my understand Mahle, JE, and others all have the same machine equipment which machines the ring lands anyway. I should add, as a rule 2618 is indeed stronger but expands more and is slightly softer than 4032.
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Last edited by lvporschepilot; 12-06-2017 at 12:12 PM..
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