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  1. E30 E36 E46 E90 E92 E93 M3 Discussions
    Hi , my friend got an m3 e36 1995 model with S50 motor and it is a US spec , He wants to change the piston rings of his car .I have found the OEM part number : 11251403810(standard) And there's two aftermarket companies that produce them : 1- NPA (Buy it from Ebay)...
  2. E63/E64 M6 Discussion
    Hi all, We all know S85 consume oil, and it was due to loose setup of the piston ring. I have been checking rod bearing issue, and today I have learned that the clearance was .001mm which is too tight. Especially, for an engine that uses 10w-60 castrol tws. I am really surprised why BMW choose...
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