Actually the bore and stroke numbers may be accidently reversed in the chart above. Running the numbers (mm -> inches) one gets 3.53/3.31 for bore/stroke, which is the reverse of the N54/N55 numbers being 3.31/3.53 for bore/stroke.
Also, compression ratio's are 10:1 for both...
Makes one wonder... either way, it looks like a nice little power plant!
|