Posted by Kaegi [76.22.23.236] on Sunday, November 01, 2015 at 13:14:45 :
In Reply to: i get 3.14 for the gm single posted by clueless [186.15.45.20] on Sunday, November 01, 2015 at 12:14:54 :
3.14 is just diameter not area. the 6.28 dual is area. area of an 80 MM piston is
80MM=3.15"
r(1.575 x r(1.575) = 2.48
2.48 x Pi = 7.789 square inches of surface area.
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