Comments by "mpetersen6" (@mpetersen6) on "Why are almost all modern engines 2.0-litres?" video.

  1. There is another aspect of cylinder wall thickness that a lot of people miss. Well maybe two. The first is bore spacing. I'm not going to get into the whole Japanese, Euro, US thing. Another is whether or not you are dealing with siamesed cylinder walls. Adequate bore spacing allows one to maintain coolant passages between the cylinders. Going with siamesed bores allows a shorter block and crank. At the potential cost of excessie heat building up in the area between the cylinders. If one looks up the bore center distance of most 500cc per cylinder engines most fall into a range from 90 to 100mm. With the average being round 95mm. But there are exceptions to the bore center distance. The heads from a Porsche V-8 will fit on a big block Chevy. It's been done.
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