Quote:
Originally Posted by speedfan
In order words, if BMW were gonna go with i6, the new M would get a modify n54/n55.
Am i right?
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I think the N55 block is pretty much limited to 3.0 litre displacement. N54 and N55 has 84mm bore. To get 3.2 Litre the old S54 used 87mm bore, but that is a cast iron block and may not be possible with the N55's composite/alloy construction.