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Old 07-31-2003 | 03:16 PM
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DarZeelon
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From: Rosh-HaAyin, ISRAEL
Default YS sleeves

Dave,

YS sleeves are similar in process to "Nikasil". Developed by Mahle, it is used by Mercedes-Benz and BMW, in their full-size aluminium engine blocks. It is also used by Rotax, for many engines including two-strokes.

Why not contact Yamada in Japan, to ask them what their exact process is?