Quote:
Originally Posted by jaykay
From the standpoint of straight mechanics I believe the larger diameter pistons give a greater potential for cylinder wall scuffing when coupled increased heat loads of the larger displacements. So you want to stroke it if you can......but in most cases that takes a much higher level of skill
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pg 20 - fixed cyl height w longer stroke crank means shorter con rods which increases lateral loads on cyl walls. cyl wall scoring showed up on the 997 engines w the move to longer stroke. piston size not as much of a factor (note the variety of bores on the m96 engines, but bore scoring not typically a factor on these engines). of course, improved cyl liners seems to have fixed it all:
http://www.hartech.org/docs/buyers%20guide%20web%20format%20Jan%202012%20part% 205.pdf
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