Engine Calculations

Useful engine calculations:

Engine displacement:
Type 1:

	Bore 83mm	85.5mm	87mm	88mm	90.5mm	92mm	94mm
Stroke 64mm	1385cc	1470cc	1522cc	1557cc	1647cc	1702cc	1777cc
69mm	1493cc	1585cc	1641cc	1679cc	1775cc	1835cc	1915cc
74mm	1602cc	1699cc	1760cc	1800cc	1904cc	1968cc	2054cc
78mm	1688cc	1791cc	1855cc	1897cc	2007cc	2074cc	2165cc
82mm	1775cc	1883cc	1950cc	1995cc	2110cc	2180cc	2276cc
84mm	1818cc	1929cc	1997cc	2044cc	2161cc	2234cc	2332cc
86mm	1861cc	1975cc	2045cc	2092cc	2213cc	2287cc	2387cc
88mm	1905cc	2021cc	2093cc	2141cc	2264cc	2340cc	2443cc
90mm	2030cc	2067cc	2140cc	2239cc	2315cc	2393cc	2498cc

Type 4:

	Bore 93mm	94mm	96mm	104mm
Stroke 66mm	1793cc		1911cc
71mm		1971cc	2056cc	2413cc
78mm		2165cc	2258cc
82mm		2276cc	2374cc

Deck height displacement calculation:

Deck height displacement = bore X bore X deck height (mm) X 0.0031416

Cylinder displacement calculation:

Cylinder displacement = bore X bore X stroke X 0.0031416 / 4

Compression ratio calculation:

Compression ratio = cylinder displacement + deck height displacement + head cc / deck height displacement + head cc