Swept volume.
So figure the area (d/2^2 * PI)
times the stroke.
That is the volume for one cylinder.
Since the roadster is a has an 87.2mm bore,
and a 83mm stroke.
Area = (d/2)^2 * PI
= 87.4/2 ^2 * 3.1415
= 7638/4 * 3.1415
= 6005 mm*mm
Stroke = 83mm
So per cylinder = 6005 * 83 mm*mm*mm
= 498495 cubic millimeters
= 498 cc
Note the measurements go from mm to cc (cubic centimeter).
cc is the common factory, but to go from mm to cm is a factor of
10, or in the case of mm*mm*mm to cm*cm*cm (a factor of 10 * 10 * 10).
Anyway from the above give us just about 2000cc for a four cylinder
engine, so those darn bore and stroke measurements should be correct.
snyler wrote:
> Just curious, how is displacement of an engine calculated? Simply bore
> and stroke and number of cylinders? Are combustion chambers factored in?
>
> -Marc T.
>
>
> ==========================================================================
> Marc Tyler TDROC Sisterdale TX
> 1970 1600 #SPL311-31016
> 1965 L-320 #L320 013642
> http://datsun_marc.tripod.com/cgi-bin/datsun_homepage.html
>
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