Don't under stand this need help
 

I have been thinkingof these pistons
http://www.diamondracing.net/excel/...Dshapeddish.htm

If you look at the -22 with a 64cc heads you get 8:5.1 and if you go to Ross pistons and punch in the math i get 9:0.1

http://www.rosspistons.com/calculator.php

Why am i off with the CR or where is the .05 gone...
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