[s-cars] New 5 cylinder vs. AAN

JC jc at j2c3.com
Thu Oct 14 16:19:12 PDT 2010


"squareness" = ratio of bore or piston diameter to stroke

Quick answer: For any given displacement, short fat pistons are happier
about spinning faster vs. long skinny ones.

Bigger bore allows for bigger valves as well.


> Sorry, I'm not as edumacated as yourself in the engineering
> department.  ;-) Can you explain the advantages of having a
> .94 under-square block over a .89 measurement?
>
> And thanks for the CEPA designation; I was looking for that
> and haven't seen it in any docs yet.
>
> Cheers
> Robin
>
>


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