Quote:
Originally Posted by cr45
Lets assume that all three engines have a Stroke to Bore ratio of unity. The Stroke for the three engines would be as follows
4 cyl - 86mm
8 cyl - 68.2mm
12 cyl - 59.6mm
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It is the bore/stroke ratio that is important. A recent discussion on these matters had a link that I posted talking about the expansion ratio of a higher compression ratio, which is similar to a low bore/stroke ratio.