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  1. nivekqueen

    Can M52B20 rebore till 84mm? or 86mm?

    Dear All bro and sister, I own a E39 520i 2.0 I have look around forum in malaysia also oversea, but also unable to get many information on this small engine... My idea was trying to rebore the bore to 84mm or 86mm for gain more power. please correct my stupid idea if it unable to work...
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