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#56: 02-12-2013, 05:16 PM
bigjweb's Avatar
Title: Contributing V.P.
Location: The mile high city
Car: 12 X3
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Je pistons use a 2618 alloy. Have you considered a 4032 alloy?
2618 is a more extreme duty piston used mainly for racing applications. 2618 is a low-silicon, high-expansion alloy. Because of this expansion, the pistons require additional clearances. That additional clearance can cause increased piston noise (piston slap) and increased oil blow-by during start up. Although, once the engine is warm, they are just like any other piston. Living in Minnesota, i'm guessing you will have plenty of cold starts. Finally, 2618 is stronger then 4032, but has a shorter overall life cycle.

Any word yet on what caused the failure?

Last edited by bigjweb; 02-12-2013 at 05:24 PM..