Small Engine Displacement Calculations Revised May 2007

Bottom Dead Center Cylinder Head 3.375” Stroke 3.25” Bore

Top Dead Center Cylinder Head Combustion Chamber

Formula For A Successful Calculation Cylinder Displacement= ∏xBore2 x stroke 4 3.375” Stroke 3.25” Bore

Formula For A Successful Calculation Example: Cylinder Displacement= 3.14 x 3.252 x 3.375 4 3.375” Stroke 3.25” Bore

Formula For A Successful Calculation Example: Cylinder Displacement (in3)= 3.14 x 3.252 x 3.375 4 3.14 x 10.5625 x 3.375 = 4 3.375” Stroke 3.25” Bore 111.93609 = 4

Formula For A Successful Calculation Example: Cylinder Displacement (in3)= 27.984 or 28 cubic inches 28 in3

Questions To See If You Learned It Calculate the displacement of an engine with a bore of 8 inches and stroke of 7.375 What would be the displacement of an engine with 6 cylinders with the same bore and stroke mentioned above? How much displacement per cylinder would a John Deere 4020 have if it has a 404 in3 engine?

Questions To See If You Learned It If a grain bin is 30’ in diameter and 80’ tall, how many cubic feet would be in the grain bin? If a bushel of grain occupies 1.25ft3, how many bushels would the above mentioned grain bin hold, if it was filled level to the top?

Algebra and Ag 28in3 = 3.14 x Bin2 x 3.375 in 4 4 x 112in = B2 10.5975 10.56853= B2 10.56853= B

ANSWER 3.25 in