Engine CC Calculation

Engine CC Calculation

How to calculate Engine CC's

Forumla - Bore (mm) X Bore (mm) X Stroke (mm) X 3.1416" = Engine cc
Example - 90.5 X 90.5 X 69mm X 3.1416 = 1775cc
(to get the Volume of 1 cylinder in CC divide by 4)
Example - 1775 ÷ 4 = 443.75

Bore
Stroke - Engine Displacement in CC's
64
69
74
76
78
82
84
77
1192*
1286*
1378
1415
1453
1527
 
83
1385
1493*
1601
1644
1688
1774
1818
85.5
1469
1584*
1699
1745
1791
1882
1929
87
1521
1640
1759
1806
1855
1949
1997
88
1556
1678
1799
1848
1898
1994
2044
90
1628
1755
1882
1933
1985
2086
2138
90.5
1646
1776
1903
1955
2007
2110
2160
92
1700
1835
1967
2020
2074
2180
2232
94
1776
1915
2052
2109
2165
2275
2332
*1192 = 1200cc Engine
*1493 = 1500cc Engine
*1286 = 1300cc Engine
*1584 = 1600cc Engine

How to calculate Compression Ratio

Forumla -
Head cc = Deck cc = 1 cylinder volume
Head cc + Deck cc
Example -
69mm X 90.5mm engine size = 1775 ÷ 4 =

443.75cc

 
.060" Deck =

9.80cc

 
Head =

_____50.00cc

   

503.55cc

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