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ironmike879
01-03-2006, 03:48 PM
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.

Robert Fogt
01-03-2006, 04:07 PM
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

Unregistered
10-25-2006, 10:43 PM
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.

Unregistered
10-25-2006, 10:59 PM

Unregistered
04-07-2007, 02:26 AM
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

Renzo
04-09-2007, 04:02 AM
hey whats 2997 cc's to ci's???

Robert Fogt
04-09-2007, 11:38 AM
hey whats 2997 cc's to ci's???

2997 cubic centimeters = 183 cubic inch

Unregistered
05-09-2007, 11:22 AM
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

Ever see a Harley?

Unregistered
05-11-2007, 06:02 PM
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
look at a harley or a Suzuki...all Cubic inch

Unregistered
05-25-2007, 04:24 AM
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

Guess you've never heard of a Harley 45 / 61 / 74 / 80.
Must have been before your time.

Unregistered
07-03-2007, 05:34 PM
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.

Robert Fogt
07-04-2007, 10:16 AM
Electric motors wont have a volume size, only internal combustion engines.

The cc or ci measurement is actually the volume of the cylinders.

Unregistered
08-25-2007, 10:00 AM
how many cc's is 40ci

Leopold Plumtree
08-25-2007, 11:58 AM
how many cc's is 40ci

Around 655.5.

Unregistered
03-30-2008, 07:05 PM
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

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

= 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

= 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.

Butch
04-19-2009, 08:00 AM
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.

You can use the information that you have to calculate the conversion. If you have a 1200cc engine and you know that it is 74ci. then divide 1200cc by 74ci to get 16.216ccpci (cc per ci). Now you can multiply 100ci. times the number of cc per ci to get 1621.6cc.

1200/74 = 16.216ccpci
100ci = ( 100ci * 16.216ccpci ) = 1621.6cc

JohnS
04-20-2009, 05:34 AM
You can use the information that you have to calculate the conversion. If you have a 1200cc engine and you know that it is 74ci. then divide 1200cc by 74ci to get 16.216ccpci (cc per ci). Now you can multiply 100ci. times the number of cc per ci to get 1621.6cc.

1200/74 = 16.216ccpci
100ci = ( 100ci * 16.216ccpci ) = 1621.6cc

The exact conversion is 16.387 064 cm³/in³.
It is (2.54 cm/in)³

Keep in mind the 100 in³ engine is presumably somewhere between 99.5 and 100.5 in³, and don't use too much "decimal dust." The exact conversion is 1638.7064 cm³, but 1640 cm³ is consistent with the precision of the starting number.

Unregistered
07-19-2009, 04:48 PM
mutiply cubic inches X 16 . 387064 and you get cc's

Garrett
09-30-2009, 06:06 AM
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

Check out the harley line up for the past......5 decades. They, make a 96 cubic inch engine. When the army used the harley as a utility veh. they switched to ci. for the purpose, of any soldier in the time would know how big the common veh. or bike is. This is where weight was a factor for getting through a mud hole.....

Garrett
09-30-2009, 06:08 AM
look at a harley or a Suzuki...all Cubic inch

The suzuki can go either way depending where it was made!

JohnS
09-30-2009, 07:31 AM
The suzuki can go either way depending where it was made!

Harley went metric sometime after the auto. manufacturers in the 70's, but at least 25 years ago. Suzuki has always been metric. However, even a marketing guy can convert between cubic inches and cubic centimeters, I suspect the real answer is where it is sold and who the target market is, not where it is manufactured. If you saw the engineering drawings used for manufacture, not marketing hype, you'd realize everybody in automotive and related is metric.

You'd have to buy an aircraft from Boeing if you want transportation in feet and inches. (or a rocket from NASA)

Unregistered
10-17-2009, 09:11 AM
Victrory uses a 100 CI motor on some models and now a 106 Ci on most of them. Victory says their 100 CI is 1634. Which is close enough to what the conversion says.

Unregistered
12-09-2009, 10:10 AM
1000 cc = 1 liter ///////// 5.0 liter is 302-305 CI (ford mustang 302 or chevy 305) which is 5000cc so 6.6 liters is 6600cc and is 400ci or a 5.8 is 5800cc and is a 351 ... a 5.7 is a 5700cc and is 350ci so do the math 350/5700= .061 which means that for every CC there is a .061 ci
at least i think this is correct

Midnight
03-26-2010, 08:30 PM
Harley seems to go by ccs up to about 1200ccs, then switches to cu in. from there, e.g. the Sportster 883 and 1200 models. Our local Harley dealer sells a 124 cu in custom "chopper" motorcycle, which using the formula I believe comes out to 2032 ccs!

Unregistered
06-05-2010, 06:47 PM
another way to calculate CI for an engine is as follows:

(Bore x Bore) x stroke x .7854 x # of cylinders

Example : SB chevy 350 at .030 overbore:

4.030 * 4.030 * 3.48 * .7854 * 8 = 355.116 CI

the method with pi works too, just personal preference i guess. you will see 2 to 3 tenths difference between the two usually but since most manufacturers round up anyway both are very accurate. this method comes to .15 ci when you change the bore size to 4.0 so it is the one i swear by, also easier for me to remember for some reason, and you don't have to find radius, you just use the diameter that you already have

JohnS
06-06-2010, 04:44 AM
another way to calculate CI for an engine is as follows:

(Bore x Bore) x stroke x .7854 x # of cylinders

Example : SB chevy 350 at .030 overbore:

4.030 * 4.030 * 3.48 * .7854 * 8 = 355.116 CI

the method with pi works too, just personal preference i guess. you will see 2 to 3 tenths difference between the two usually but since most manufacturers round up anyway both are very accurate. this method comes to .15 ci when you change the bore size to 4.0 so it is the one i swear by, also easier for me to remember for some reason, and you don't have to find radius, you just use the diameter that you already have

The volume of a cylinder may be expressed either as
V = pi*r²*h = (pi/4)*d²*h
depending on whether you use radius or diameter. Your 0.7854 is just an approximation to pi/4, which, like pi, has an infinite number of decimals and has to be cut off somewhere.

Unregistered
07-07-2010, 12:41 PM
look at a harley or a Suzuki...all Cubic inch

My harley is a 1450cc...

Unregistered
01-30-2011, 09:27 AM
There are 16.39 cc in 1 cubic inch so to convert cc to ci use

cc
ci = ---------
16.39

To convert ci to cc use

cc = ci * 16.39

Unregistered
02-17-2011, 09:26 PM
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

harleys are usually refered to in ci. in fact most american vehicles are similar in this regard.

JohnS
02-18-2011, 03:00 AM
harleys are usually refered to in ci. in fact most american vehicles are similar in this regard.

I disagree with this claim. The size of the engine in most American vehicles (cars and light trucks) has been typically stated and badged in liters for over 30 years. The liter is a cubic decimeter, the cubic centimeter is rarely used in US vehicles but very common in European vehicles.

Unregistered
07-11-2011, 05:15 PM
Sportsters are either 883 or 1200 CCs. Hence the models XL883 or XL1200.

Unregistered
09-13-2011, 10:11 AM
CC; It' 7412 cc's. fomoco

Unregistered
02-20-2012, 08:15 PM
To convert c.i. to cc, divide by 0.061.
To convert cc to c.i., simply multiply.
ie. (rounding up) 1640cc x 100ci = 100.04

Unregistered
02-29-2012, 09:07 AM
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

Harley has always posted in cubic inches,,,74, 80, 88 96, etc. Where have you been the last 100 yrs?

cycleesto
05-08-2012, 03:31 PM
Hello,
1 inch = 2.54 cm (centameter)
1 ci (cubic inch)= 1inx1inx1in = 2.54cm x 2.54cmx 2.54cm= 16.39cc (cubic centameters)

therefore 1 cubic inch (ci)= 16.39 cubic centameters (cc) -> 16.39cc per cubic inch

so........ 1200cc/16.39cc percubic inch= 73.22ci, or 100 ci x 16.39cc/ci = 1640cc, and so on............ :-)

Unregistered
06-10-2012, 04:44 PM
To the unregistered person who has never seen a motorcycle listed in Cubic Inches ~ Apparently you don't know much about motorcycles. Harley-Davidson is listed in CUBIC INCHES. I have owned a 55 CI. 61 CI, 74 CI, 96CI and currently ride a 103 CI Harley-Davidson.

Unregistered
03-18-2013, 04:47 AM
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

Victory motorcycles have cubic inch instead of cc. Freedom 107, and 100.

Unregistered
11-20-2013, 04:26 PM
Ever see a Harley?

my harley softail heritage has 88ci stamped on the engine... which means it has 1450cc's