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Message: <blockquote data-quote="jaja" data-source="post: 17086" data-attributes="member: 4978"><p>hi all..hope 2get opinion from u guys(calling all sifu),tq very much in advance! :top: for now my engine already brought down,tear it apart.found major problems,4 out of 6 piston rings patah(broken).that explains d enjin oil always need to topup regularly although last year done top overhaul.now my bro ask me to buy new pistons.b4 i do this,i want to know the best option 1st.buy standard pistons,or oversized ones?(2'25)or myb chg engine?my pocket not so deep..hehe.hope to rebuild an old bmw engine to its original,like new from factory.(got few mod oso can,hehe)wil TLC my engine after this.engine is m20b23 ljet.thx again..help is really needed asap</p></blockquote><p></p>