turbo_fb Posted November 9, 2005 Share Posted November 9, 2005 I have a RB25DET engine and was wondering how much it could be bored up in size? HKS have 88.5mm pistons for 2.7L and I found some A'pexi 87mm that was quite cheap. Would it be possible to bore up the 2.5 for that? Quote Link to comment Share on other sites More sharing options...
RB26powered74zcar Posted November 9, 2005 Share Posted November 9, 2005 I eouldn't go over a 1mm over bore. I have seen many post from guys with the RB25 say this... Try here, these guys are RB25 owners >> http://forums.nicoclub.com/zeroforum?id=135 Quote Link to comment Share on other sites More sharing options...
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