How can I convert cubic centimeters to horsepower?

Question

In many countries, automobile engines are rated according to "cubic centimeters." But in other countries, automobile engines are rated based on their "horsepower".

If these two factors are not related, then it stands to reason that ALL AUTOMOBILE ENGINES would be rated on their "cubic centimeters" AND "horsepower." But this is not true. For example, I was in Japan once. We visited a car dealer. He described the engines of the models on sale in terms of "cubic centimeters." We asked: How do you convert that to horsepower?

He didn't know. But, my reasoning is: If "cubic centimeters" is only an expression of the size of the engine's internal parts, then who cares anyway??? What is important is the POWER !!!

So, why wouldn't POWER be important to these people in the Asian countries??? Who cares about "size" if that is no indication of power????

Hence, I believe that "cubic centimeters" must be related to "power" in some way, and there must be a conversion formula.

Answer 1

You pose some interesting questions.
First of all - there is not a universal answer for anything.
Trying to get the world to use one standard of measure has been very slow and as knowledge and intelligence grows, it will gain acceptance.
Your question should not be cc or ci (cubic inches) but the combination of size (cc or ci) and horsepower and torque.

Then depending what your needs are - heavy loads - light loads - transport a single individual or whatever You can make a decision and limit your list.
Now add in fuel mileage - if important, amount of moving parts,
history or warrantee etc.. etc.,,, etc...

Answer 2

Cubic centimeters only relates to the size of the motor not the horsepower. An example is a 1939 Buick straight eight motor of over 300 cubic inches that is rated at 130 horsepower and then a Dodge 4.7 liter( 270 cubic inches) that is rated at 260 horsepower. CC's or cubic inches do not directly correspond with an automatic horsepower number, so in effect there is no true formula only the parameters.

Answer 3

In Japan, they have what amounts to a tax on cubic centimeters. You have to pay extra for a big engine. Chosing a kei-class car, which has a 660 cc or smaller engine, also allows you to use special parking spaces that are off limits to larger cars. So it's very important to know your cc's over there.

One cubic centimeter is 1/1000th of a liter. Most American dealers go by liters when sizing the engine.

And there is no direct way to convert cc's to horsepower. For example, the Integra Type R had an engine around 1800 cc's that made 195 hp. The early Dodge Neon SOHC engines were 2000 cc's and only 130 hp.

Answer 4

Convert Cc Into Horsepower

Answer 5

There is no relation. The cubic centimeters of an engine is figured by volume. and the horsepower is figured by the torque of the engine. A 2000 cc engine is capabale of producing 400 horsepower with a turbo with supporting modifications and others of the same size can only produce 150 horsepower. The metric to standard conversion would be cubic centimeters to cubic inches.

Answer 6

The short answer is about 15 to 17cc = 1 hp or about 1 cu.in. = 1 bhp for a modern car.

The full answer is complex - the power output of an engine depends on the state of tune as well as size, and the definition of horsepower must be considered, brake horsepower ( bhp ) or shaft horsepower ( shp ).

Most will tell it can't be, that HP and cc are not the same, but one does relate to the other.

Answer 7

There is no direct correlation between CC's and horsepower. CC's are a measure of volume - horsepower is a measure of work done over a given amount of time. You can convert horsepower to watts. You can convert cc's to liters or quarts. What you are asking is like trying to convert miles into pounds.

Answer 8

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Sorry but you cannot convert CC or CI into hp. The CC or CI is the size of the engine only Depending on how the engine was designed or modified reflects the HP. Sometimes the same size engine from a car but different modifications will have different HP ratings.

Answer 9

The amount of power per CC changes when you change the cam, exhaust system, induction system, and many other things, so you cannot say a certain # of CC's will produce a certain HP

Answer 10

Hope this helps!