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6 comments
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Join Date: Jun 2009
Posts: 80

CC to HP Conversion Formulas for Small Engines

12/21/2011 8:18 PM

Anyone have this?

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Engineering Fields - Electrical Engineering - Been there, done that, still doing it. Engineering Fields - Control Engineering - New Member

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#1

Re: cc to hp conversion formulas for small engines

12/21/2011 8:45 PM

Yes, the manufacturer.

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#2

Re: cc to hp conversion formulas for small engines

12/21/2011 10:16 PM

I gave Red a good answer for 3 words and a comma. This is indeed the most correct answer possible. CC and Hp are only related when type of engine is known (say 2 or 4 stroke), the RPM, the fuel etc...

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#3
In reply to #2

Re: cc to hp conversion formulas for small engines

12/22/2011 7:27 AM

And there's been at least one thread on the subject recently.

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#4

Re: CC to HP Conversion Formulas for Small Engines

12/22/2011 7:58 PM

CC is for displacement (cubic centimeters)

HP is for horsepower

It's a better idea to conver CC to kW (overseas type of measurement units, not the US)

You could convert CI (cubic inches) to HP (US measurements), but you still would be in the same predicament...nowhere

Just remember, there is no replacement for displacement!

Don't they have Google where you live? Or Wikipedia?

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#5

Re: CC to HP Conversion Formulas for Small Engines

12/26/2011 4:54 PM

http://www.simetric.co.uk/si_cc2hp.htm

Probably 16 +/- 10 cc/hp will encompass most cases.

I am still not getting e-mail notifications of replies even though my control panel looks like I should be.

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Commentator

Join Date: Apr 2012
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#6

Re: CC to HP Conversion Formulas for Small Engines

04/18/2012 2:11 PM

Yes, cc to hp is very simple, only a few factors

air density, oxygen content, moisture content, fuel density, fuel BTu content, AF ratio, charge density, charge velocity, charge heat, volumetric efficincy of cylinder filling, compression ratio, combustion timing, combustion efficiency, NOx reversion, inter-cyclic variations, exhaust scaveneging...

that leaves 20 or 100 factors out..

There are equations, but you dont want to try them..

Short answer, there is none.

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