View Full Version : engine math
rhiasdaddy
05-01-2009, 11:28 AM
can any one tell me the formula used in figureing c.u
TS1955
05-01-2009, 11:31 AM
The formula is: .7854 x bore x bore x stroke x number of cylinders.
TS1955
fla1976
05-01-2009, 02:08 PM
The formula for cubic inches is: Pi x radius squared x stroke x number of cylinders.
(radius is the bore/2)
A 283 has a 3.875 bore and a 3 inch stroke.
(((1.9375 x 1.9375) x 3.1416) x 3) x 8= 283.038525
Same as above but it is easier for me to use and visualize.
fla1976
05-03-2009, 02:52 PM
Here is a site if you don't want to do the math yourself.
http://www.mindsciencemotorsports.com/graphics/tech.htm