I am trying to find out what the conversion of 100 ci is in ci. I have a motorcycle that has a 100 ci engine and need to know how many cc it is. I know that a 1200 cc engine is a 74 ci.
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Re: cc's to ci's
cc stands for cubic centimeter and ci stands for cubic inches. You can convert between them on the Volume Conversion page here:
http://www.onlineconversion.com/volume.htm
100 cubic inch = 1638.7 cubic centimeter
Thats about 1640 cc

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Re: cc's to ci's
Originally posted by ironmike879I am trying to find out what the conversion of 100 ci is in ci. I have a motorcycle that has a 100 ci engine and need to know how many cc it is. I know that a 1200 cc engine is a 74 ci.
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Re: cc's to ci's
Originally posted by UnregisteredAnswer
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Re: cc's to ci's
your motor cycle has a vw bug engine in it? and btw ive never seen a bike with the size in ci its always cc
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Re: cc's to ci's
Originally posted by Unregisteredyour motor cycle has a vw bug engine in it? and btw ive never seen a bike with the size in ci its always cc
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Re: cc's to ci's
Originally posted by Unregisteredyour motor cycle has a vw bug engine in it? and btw ive never seen a bike with the size in ci its always cc
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Re: cc's to ci's
Originally posted by Unregisteredyour motor cycle has a vw bug engine in it? and btw ive never seen a bike with the size in ci its always cc
Must have been before your time.
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Re: cc's to ci's
How do you find out how many cc's a motor is?
I have this really nice weed wacker motor but i dont know how many cc's or ci's it is.
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Re: cc's to ci's
To calculate engine displacement or volume...
To calculate your engines displacement use this formula:
Piston Displacement = π x (radius)2 x stroke x number of cylinders
π = 3.14
radius = bore/2
stroke = the distance from TDC to BDC
number of cylinders = the number of cylinders in the engine
Here is an Example:
This engine has: Bore= 80mm
Stroke = 90mm
Number of Cylinders = 1
Radius = Bore/2
= 80 ÷ 2
= 40mm
Piston Displacement = π x (radius)2 x stroke x number of cylinders
= 3.14 x (40)2 x 90 x 1
= 3.14 x 1600mm x 90 x 1
= 452 160 mm3
You will notice that you answer is in mm3 . Engines are usually give a size of displacement in cm3 or commonly referred to as CC's. To convert your answer to CC's, divide your answer by 1000. In this example, you would have 452 160mm3 ÷ 1000 giving you an answer of 452.16 cm3 or 452.16 cc. This engine has a displacement of 452.16 cm3 or 452.16 cc.
Often larger engines have their displacements measured in litres. To get this measurement, divide you answer that is in cm3 or cc's by 1000. In this example, you would have 452.16cm3 ÷ 1000 giving you an answer of 0.452 Litre or 0.452 L. This engine has a displacement of 0.452 Litres or 0.452 L.
Here is One More Example:
This engine has: Bore= 87.5 mm
Stroke = 91.4 mm
Number of Cylinders = 2
Radius = Bore/2
= 87.5 ÷ 2
= 43.75 mm
Piston Displacement = π x (radius)2 x stroke x number of cylinders
= 3.14 x (43.75)2 x 91.4 x 2
= 3.14 x 1914mm x 91.4 x 2
= 1 098 656.5 mm3 or
= 1099 cm3 or
= 1.100 litres (L)
This engine is a 1.100 litre two cylinder engine.
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