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What is Alusil coating?

Certain European engine manufacturers use a coating known as "ALUSIL" for wear resistance in aluminum engine blocks. What is it? Who can perform this process? Thanks

Greg Vallery
San Antonio, Texas

Hi Greg, Alusil is the trademark name of Kolbenschmidt AG in Europe for the process used in their aluminum engine blocks. Alusil basically consists of about 70% aluminum and 30% silicon. Alusil is used to replace Nikasil (a trademark of Mahle) that had corrosion problem with high sulfur content US fuel. Racing Dynamics has the information about Alusil. It is said that Alusil is a patented process. If you need more detailed information, you'd better get the patent.

Good luck.

Regards,
Ling

Ling Hao
- Grand Rapids, Michigan

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