How to calculate horsepower from cc

Sample Horsepower Calculations : Question: Determine the estimated pump horsepower based on the 200 gpm flow rate and 100 ft discharge pressure at the pump. HP = Head (ft) x Flow Rate (gpm) x (Specific Gravity) 3956: Pump Discharge Pressure = 100 ft: Measured Flow Rate = 200 gpm Calculate Horsepower: HP = 100 ft x 200 gpm x 1.0: 3956: HP = 5 ...

How to calculate horsepower from cc. What is Horse Power? The power, in simple terms, is ‘ rate or speed of doing work ’. The work is defined as a ‘ force operating thru’ a distance ‘. The automotive engines use the term ‘ horse power‘ (hp) to measure its power. This term comes from the erstwhile practice of measuring the rate of work done by a horse which equals to 33,000 …

If you mean HP=Horsepower, and CC= Cubic centimeters then HP does have anything to do with CC's. Cc's are the size of the displacement of the engine. HP is the amount of power the engine produces.

708 cc is approximately equal to 47.2 horsepower, according to the general rule that every 5-6 cc generates 1 HP for hypercars and high-performance powersport vehicles . However, the exact hp value can vary depending on multiple factors, such as the engine type, stroke, aspiration, and compression ratio.988 cc is approximately equal to 65.87 horsepower, according to the general rule that every 5-6 cc generates 1 HP for hypercars and high-performance powersport vehicles . However, the exact hp value can vary depending on multiple factors, such as the engine type, stroke, aspiration, and compression ratio.Calculate the clearance from piston to deck (bore × bore × 0.7854 × gap between piston and deck at top dead center (TDC)) - Measure the thickness of your head gasket and bore. - When you have all the figures, use this formula for the calculation of your engine's compression ratio: CR = (cylinder volume + clearance volume + piston volume ...The Formula. The formula to calculate horsepower (HP) from cubic centimeters (CC) is straightforward: HP = CC / 15. This formula assumes a general …557 cc is approximately equal to 37.13 horsepower, according to the general rule that every 5-6 cc generates 1 HP for hypercars and high-performance powersport vehicles . However, the exact hp value can vary depending on multiple factors, such as the engine type, stroke, aspiration, and compression ratio.Here is the formula for horsepower using the RPM and torque of the motor: horsepower = (RPM × torque) ÷ 5,252. For example, let’s find the horsepower for an engine producing its maximum horsepower at 5,600 RPM and which also produces a peak torque of 350 foot-pounds. horsepower = (5,600 × 350) ÷ 5,252. horsepower = 1,960,000 ÷ 5,252.To calculate engine displacement in cubic inches, multiply the cylinder volume times the number of cylinders. Engine Displacement = Cylinder Volume x Number of Cylinders. Chevy 350 example: 43.73 x 8 = 349.8 cubic inches, which everybody rounds up to 350 cubic inch displacement (cid). ENGLISH-METRIC CONVERSION FACTORS.CC-HP Efficiency. Keep in mind that the CC to HP conversion is a rule of thumb and doesn't consider factors like engine efficiency. High-quality engines are more efficient, so they can generate more HP for the same CC. Therefore, two mowers with the same CC may have different actual HP outputs due to engine design and build quality.

Method 1: Range. This conversion consists of two steps: Step 1: Multiply your vehicle engine’s HP by 15. Step 2: Multiply your vehicle engine’s HP by 17. The product of steps 1 and 2 is the approximate maximum engine capacity, whereas the product of steps 3 and 4 is the approximate minimum engine capacity.Use the following formula to calculate the proper flow rate for your injectors. injector flow rate = horsepower × BSFC # cylinders × safe duty cycle. To find the ideal flow rate, simply plug in the values found in steps one, two, and three into the formula and solve. The result is the flow rate in lb/hr.The conversion of CC (cubic centimeters) to HP (horsepower) varies based on factors like the engine's efficiency and design. There isn't a direct conversion formula, but a common rule of thumb is around 15-17 CC per 1 HP. How many cc is 1 HP?209 cc is approximately equal to 13.93 horsepower, according to the general rule that every 5-6 cc generates 1 HP for hypercars and high-performance powersport vehicles . However, the exact hp value can vary depending on multiple factors, such as the engine type, stroke, aspiration, and compression ratio.Here’s a graph showing the average horsepower for displacements for the bikes listed on Motorbimble. You can see that a bigger engine usually means more horsepower. On average, you get about 1 horsepower for every 10cc of displacement, but there can be a lot of variation. 600cc and 1000cc bikes have a higher average because these are popular ...

170 cc is approximately equal to 11.33 horsepower, according to the general rule that every 5-6 cc generates 1 HP for hypercars and high-performance powersport vehicles . However, the exact hp value can vary depending on multiple factors, such as the engine type, stroke, aspiration, and compression ratio.Our boost horsepower calculator is extremely easy to use. You only need to know your naturally aspirated engine's current power output and the pressure you want a supercharger to create. That's it. The output is presented in the last field of the calculator. Superchargers usually run at a boost pressure between 6 and 9 pounds per square inch (psi).724 cc is approximately equal to 48.27 horsepower, according to the general rule that every 5-6 cc generates 1 HP for hypercars and high-performance powersport vehicles . However, the exact hp value can vary depending on multiple factors, such as the engine type, stroke, aspiration, and compression ratio.ATVs: 100cc= 10-12 mph. Snowmobiles: 100cc = 10-18 mph. Large motorcycles: 100cc = 10-30 mph. F1 cars: 100cc= 14-16 mph. Go-karts: 100cc = 20-30 mph. Small motorcycles: 30-100 mph. If you wonder where these numbers come from and how it’s possible to convert engine cc to HP, this post is for you. We at PowerSportsGuide have compiled all you ...

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125 cc is approximately equal to 8.33 horsepower, according to the general rule that every 5-6 cc generates 1 HP for hypercars and high-performance powersport vehicles . However, the exact hp value can vary depending on multiple factors, such as the engine type, stroke, aspiration, and compression ratio.Where: Torque – Torque measured in foot-pounds (ft-lb),; RPM – Engine speed in revolutions per minute.; Horsepower (HP) is a unit of power used to measure the rate at which work is done, particularly in engines and motors. This formula is commonly used in the automotive industry to calculate the horsepower of a vehicle’s engine based on its …Answer. Engine HP: Engine CC: Using This Small Engine. cc to hp Calculator. Enter Four Cycle Engine. Rated cc to Calculate. Engine HP. Enter Four Cycle Engine. Rated HP to …Basic CC to HP Conversion. Because cubic centimeters is a measure of volume of displacement and horsepower is a measure of work output, there is no direct conversion between the two. Correlative examples illustrating the cubic centimeters and horsepower of several different engine types, however, reveal that there is approximately 15 to 17 ...

The formula to calculate horsepower (HP) from cubic centimeters (CC) is straightforward: HP = CC / 15. This formula assumes a general conversion factor of 15 CC per 1 HP. Usage Instructions. Enter the CC value in the input field. Click the “Calculate HP” button. The calculated horsepower (HP) will be displayed below the button. ConclusionCC, short for cubic centimeters, represents the engine's displacement volume. It measures the total volume swept by all the pistons in an engine's cylinders. Simply put, it quantifies the engine's capacity to produce power. For instance, an engine labeled as "1000cc" signifies a displacement volume of 1000 cubic centimeters.Calculate the speed of a racing hydroplane having an engine that delivers 3000 hp and displaces 6800 pounds of water.. To calculate boat speed:. Step 1: Enter shaft horsepower value P = 3000 hp.. Step 2: Insert the boat's displacement, D = 6800 lbs.. Step 3: Choose the Crouch constant, C from the list for hydroplanes, i.e., C = 220.. Step 4: Using the Crouch's formula:horsepower (hp): The horsepower (hp) is a unit in the foot-pound-second ( fps ) or English system, sometimes used to express the rate at which mechanical energy is expended. It was originally defined as 550 foot-pounds per second (ft-lb/s).Step 2. Apply The Formula. Use the following formula to determine the motor horsepower: HP = (V x I x Eff): 746. In short, multiply the efficiency, current, and voltage before dividing the number by 746. Here's a specific example: Let's say your electric motorbike has 230V motors that pull 4 amps with 82% efficiency.How to calculate power to weight ratio. Choose the unit system that you want to use from the drop down menu. Enter the vehicle's curb weight. Enter the engine's horsepower. To generate PWR, click on the button "Calculate PWR". This calculator is great for: People who are keen to buy a car. People who would like to find out how much …The compressed volume is 0.000 + 9.854 + 118 18 = 109.854. Dividing the swept volume by the compressed volume we get 10.25:1. Static Versus Dynamic Compression. On a final note, these calculations ...This calculator will allow you to calculate injector size based on power requirement. You can select between horsepower (HP) or kilowatt (KW). It will also allow the input of various fuels such as gasoline, E85, E98 and Methanol.Horsepower Calculator Back to Custom Performance Racing Compression Ratio Formulas. GV (Head Gasket Volume) = Bore(in) X Bore(in) X 12.87 X (Head Gasket Thickness in Inches) ... X 12.87 X (Inches Below the Deck) HV (Head Volume) = CC's VV (Dish, Valve Pocket, Dome Volume) = CC's (Minus for dish or valve pockets, Plus for dome) PV ...The Fiveomotorsport flow-rate calculator is based on potential and/or actual engine horsepower. Depending on the option you choose, the calculator can be based on wheel horsepower or power to the crankshaft. Because of the variable percentages lost with; front and rear, 4-wheel or all-wheel drive, we can make slight adjustments when needed.

252 cc is approximately equal to 16.8 horsepower, according to the general rule that every 5-6 cc generates 1 HP for hypercars and high-performance powersport vehicles . However, the exact hp value can vary depending on multiple factors, such as the engine type, stroke, aspiration, and compression ratio.

A horse exerting 1 horsepower can raise 330 pounds of coal 100 feet in a minute, or 33 pounds of coal 1,000 feet in one minute, or 1,000 pounds 33 feet in one minute. You can make up whatever combination of feet and pounds you like. As long as the product is 33,000 foot-pounds in one minute, you have a horsepower.Jan 24, 2024 · Calculating the conversion from cubic centimeters (CC) to horsepower (HP) is an essential aspect of understanding an engine’s power output. This CC to HP calculator is designed to make this conversion straightforward, allowing you to determine an engine’s horsepower based on its displacement in CC. Chamber size = measured cc x 0.0610237. That's a lot of numbers to remember and a lot of keys to punch on your calculator, so most engine builders use the following alternate formula. Chamber size = measured cc ÷ 16.4. The exact conversion is 16.387064, but the difference is negligible and won't normally affect your final calculation.200 cc is approximately equal to 13.33 horsepower, according to the general rule that every 5-6 cc generates 1 HP for hypercars and high-performance powersport vehicles . However, the exact hp value can vary depending on multiple factors, such as the engine type, stroke, aspiration, and compression ratio.243 cc is approximately equal to 16.2 horsepower, according to the general rule that every 5-6 cc generates 1 HP for hypercars and high-performance powersport vehicles . However, the exact hp value can vary depending on multiple factors, such as the engine type, stroke, aspiration, and compression ratio.Use this power converter to convert instantly between horsepower, kilowatts, megawatts, volt amperes, watts and other metric and imperial power units. You can convert between watts and amps here.Many landlords charge a late rent fee when the rent is even a few days past due. There are legal restrictions on how much the landlord can charge and when the late fee kicks in. Re...Step 4. Calculate the horsepower or CC by multiplying or dividing by 15. The general rule is for every 15 CC there is 1 HP. For example, for a 150 CC engine you would take 150 divided by 15, which equals 10 HP. The …

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The BASE* fuel pressure you will run (your fuel pressure at idle), *our calculator assumes a 1:1 rising rate fuel pressure regulator for turbo applications Injector flow size – make sure you select cc/min or lb/hr in the drop down, (The amount of fuel you can supply your engine directly affects the amount of power that engine is capable of ...Use the following formula to calculate the proper flow rate for your injectors. injector flow rate = horsepower × BSFC # cylinders × safe duty cycle. To find the ideal flow rate, simply plug in the values found in steps one, two, and three into the formula and solve. The result is the flow rate in lb/hr.The motor power P (HP) = T (Nm) *N (rpm) / 7127. P (HP) = 0.000140304 x T (Nm) *N (rpm) Example: A motor can provide 144Nm at 1480 rpm. Calculate the motor rating in horsepower. Use our torque to HP conversion formula. HP = 0.0001403 * 144 * 1480. Horsepower = 29.9 HP, approximately 30 HP. Enter the torque in Nm and speed in rpm, then press the ...50 cc = 3.1 hp. Adversely, a 150-hp engine will be approximately 2,400 cubic centimeters. 150 hp x 16 = 2,400 cc. More quick conversions: 100 hp = 1600 cc. 250 hp = 4800 cc. 500 hp = 8000 cc. Engine size is used as a means of classifying vehicles, and regulating them.Horsepower = (3,000 x 6) / 63,025 = 0.286. 63,025 is a constant when using RPM for speed and in-lbf for torque units. 5,252 is another common constant if the speed is in RPM and torque is in ft-lbf. If the units are different then simply make the unit conversion. The derivation of these constants is done using the 33,000 ft-lbf /min = 1 horsepower.Brake horsepower per cubic centimeter or (bhp/cc) is a figure of merit that is used to indicate the 'state of tune' of an internal combustion engine. It is defined as the ratio of the engine's net power output to its displacement, the internal size. Power is measured at its rated speed and full throttle.Use this power converter to convert instantly between horsepower, kilowatts, megawatts, volt amperes, watts and other metric and imperial power units. You can convert between watts and amps here.Enter The CC. HP Result. Formula to convert 43 CC to HP horsepower Divide your vehicle engine’s capacity by 15. HP = CC/ 15. HP= horsepower. cc=Cubic Centimeters. for this 43 CC exemple HP= 43 /15 = 2.87. 43 cc= 2.87 HP.To convert from CC to horsepower ( 209 CC TO HP) or vice versa. Type the amount below you want to transfer, then click the Transfer button in The calculator. Formula to convert 209 CC to HP horsepower Divide your vehicle engine’s capacity by 15. ….

to calculate horsepower. Torque in foot pounds (ft·lbs) Engine RPM. Horsepower. When you choose horsepower, this calculator will measure the approximate horsepower of an engine based on the torque of the engine (measured in foot-pounds) multiplied by the RPM of the engine, divided by 5,252 (conversion between foot-pounds and horsepower). There are approximately 15 to 17 cc per horsepower, so 600 cc is equal to 35 to 40 horsepower. There are too many variables to enable an exact conversion, so the number of horsepow...Engine size is typically measured in cubic centimeters (cc) or liters (L). In general, a larger engine size tends to produce more horsepower. This is because a larger engine can accommodate more air and fuel, resulting in a more powerful combustion process. To calculate the horsepower of an engine based on its size, you can use the following ...50 cc = 3.1 hp. Adversely, a 150-hp engine will be approximately 2,400 cubic centimeters. 150 hp x 16 = 2,400 cc. More quick conversions: 100 hp = 1600 cc. 250 hp = 4800 cc. 500 hp = 8000 cc. Engine size is used as a means of classifying vehicles, and regulating them.1. Divide the cc of the engine by 15. Divide the cc of the engine by 15. For example, the 1800 cc of a 1.8-liter 16V Ford Escort's engine divided by 15 yields 120 hp. 2. Divide the cc of the engine by 17. Divide the cc of the engine by 17. For example, the Escort's 1800 cc divided by 17 yields approximately 106. 3.Jan 18, 2024 · For this method of conversion, you can use these numbers. 1. Divide the size of your engine by 14. 2. Divide the size of your engine by 17. The range of horsepower your car engine has is what you get as a result. The result of step 1 is about the maximum HP, and the result of step 2 is about the minimum HP. Jan 8, 2024 · Now let’s look at some specific CC to HP calculator tools to use. CC to HP Calculator Recommendations. Here are 5 top recommended free online CC to HP calculators: 1. Calculatorsoup CC to HP Calculator. Intuitive interface with inputs for CC, RPM, and button to calculate It is expressed as. Horsepower = Torque x RPM (or)Speed / 5252 hp. Horsepower = (T * N) / 5252 hp. Where, Constant number of revolutions per minute is 5252. Torque is represented by T. Speed or RPM is represented by N. One more formula of Horsepower that relates to weight is defined as, Horse Power = Weight x (Velocity/234)^2.Brake Horsepower, also in short known as BHP is the amount of work by done by an engine and how fast the engine could work. In other words, we can say it is the amount of watts generated at the engine's crankshaft. If the engine generates 746 watts then it means 1 horsepower. Formula to calculate break horsepower is: How to calculate horsepower from cc, HP Result. Formula to convert 256 CC to HP horsepower Divide your vehicle engine’s capacity by 15. HP = CC/ 15. HP= horsepower. cc=Cubic Centimeters. for this 256 CC exemple HP= 256 /15 = 17.07. 256 cc= 17.07 HP., This engine displacement chart shows all relevant measurements including liters, cubic inches, and cubic centimeters. Use these keyboard shortcuts to easily search for what you need to find. If you have a Windows Machine: Use Ctrl + F (Control + F) to type in your engine size and find it in the table. If you have an Apple Machine: Use ⌘ + F ..., Fluid Motor Torque from GPM, PSI and RPM. Gallons per Minute (GPM) Motor PSI. Motor RPM. Torque. inch pounds. Example: How much torque does a motor develop at 1,200 psi, 1500 rpm, with 10 gpm input? Formula: GPM x PSI x 36.77 ÷ RPM = torque in inch pounds. This company assumes no liability for errors in data nor in safe and/or satisfactory ..., How to Calculate CC to Horsepower? • Learn how to convert CC to horsepower with this easy-to-follow video! Discover the relationship between these two units ..., First, determine the total engine size in cubic centimeters. For this example, the engine size is found to be 750CC's. Next, use the formula above to convert this value to horsepower. HP = CC/ 15 = 750 / 15 = 50 horsepower. Example #2: For this example, we will convert HP to CC. The horsepower in the problem is provided as 40 HP., Method #1: Range. The two steps involved in this conversion are: Step #1: Multiply your vehicle engine's HP by 15. Step #2: Multiply your vehicle engine's HP by 17. The result obtained from step #1 is the approximate maximum engine capacity, while the product from step #2 is the approximate minimum engine capacity., CC to HP Calc. In general, a modern motorcycle will produce about 1 HP for every 4-20cc. The range seems kind of wide, but bear in mind that: Race bikes and dirt bikes reside at the bottom of the range. Factory sport bikes and dual sports sit in the middle at about 10-12 CC/HP. Factory Harley’s (including my 1972 Shovelhead) and cruisers can ..., Fremont, California, police say they'll save $32,0000 on gas—and cut carbon emissions—with the new vehicle. The first police car was electric. Bought in Akron, Ohio, in 1899, the 4..., Calculate Horsepower with the RPM & Torque Method. It is possible to calculate the horsepower of an engine using the RPM and torque method. While horsepower can be defined as the sheer power output of the engine, torque is defined as the amount of twisting force that is created by the engine.. Engine horsepower typically peaks at a specific …, This calculator determines the displacement size of an engine, based on your data, in cubic inches and CCs. Enter the measurement designation in either inches, 1, or millimeters, 2. Enter the cylinder bore diameter. Enter the bore/stroke ratio, if you know it; left blank, the system will calculate it. Enter the piston stroke length., 3. Plug your numbers into the formula CR = (Vsw + Vcl) / Vcl. Now that you know the swept volume and clearance volume, simply insert those numbers into the formula and solve it. Add the swept volume and cylinder volume together first. Then, divide the result by the cylinder volume to find the compression ratio., Many landlords charge a late rent fee when the rent is even a few days past due. There are legal restrictions on how much the landlord can charge and when the late fee kicks in. Re..., horsepower = weight / (elapsed_time / 5.825)³. Trap-speed method - Applies vehicle weight also and takes into account the car's speed on the quarter-mile finish line (this is not average speed, but the speed at the moment of crossing the end line). The formula is: horsepower = weight × (speed / 234)³. Note that in our calculator, you can ..., For horsepower, the calculator will measure the engine's approximate horsepower based on the engine torque (in foot-pounds), multiplied by the engine's RPM, divided by 5,252 (conversion between foot-pounds and horsepower). For example, if your engine has a torque of 350 foot-pounds, then the horsepower would be 333 horsepower, at 5,000 RPM., Home; Engineering; Electrical; Torque to Horsepower Converter is an online tool used in electrical engineering to calculate one form of energy into another form. Horsepower is the measure of power that produces the mechanical output. Torque is a moment of twisting force that causes a machinery to rotate about an axis and it is usually represented in …, 783 cc is approximately equal to 52.2 horsepower, according to the general rule that every 5-6 cc generates 1 HP for hypercars and high-performance powersport vehicles . However, the exact hp value can vary depending on multiple factors, such as the engine type, stroke, aspiration, and compression ratio., Taking 5,000 divided by 300 gives you a result of 16.6 pounds per horsepower. Doing the opposite calculation — taking 300 divided by 5,000 — gives you a result of 0.06 horsepower per pound. The lower the number, the faster your boat will go., displacement = π 4 × 3.4″2 × 3.6″ × 8. displacement = 0.78539816339 × 11.56 × 3.6 × 8. displacement = 261.48 cu in. Engine displacement can be measured in liters, cubic centimeters, or cubic inches. If the bore and stroke measurements are in inches, then the result from the formula above will be in cubic inches. , Horsepower (hp) is a unit of measurement of power, or the rate at which work is done, usually in reference to the output of engines or motors. There are many different standards and types of horsepower. Two common definitions used today are the imperial horsepower, which is about 745.7 watts, and the metric horsepower, which is …, 301 cc is approximately equal to 20.07 horsepower, according to the general rule that every 5-6 cc generates 1 HP for hypercars and high-performance powersport vehicles . However, the exact hp value can vary depending on multiple factors, such as the engine type, stroke, aspiration, and compression ratio., What is Horse Power? The power, in simple terms, is ‘ rate or speed of doing work ’. The work is defined as a ‘ force operating thru’ a distance ‘. The automotive engines use the term ‘ horse power‘ (hp) to measure its power. This term comes from the erstwhile practice of measuring the rate of work done by a horse which equals to 33,000 …, How to Calculate CC to Horsepower? • Learn how to convert CC to horsepower with this easy-to-follow video! Discover the relationship between these two units ..., Chamber size = measured cc x 0.0610237. That's a lot of numbers to remember and a lot of keys to punch on your calculator, so most engine builders use the following alternate formula. Chamber size = measured cc ÷ 16.4. The exact conversion is 16.387064, but the difference is negligible and won't normally affect your final calculation., Welcome to our ultimate guide on calculating horsepower (hp) of a car engine! In this video, we'll show you step-by-step how to calculate the horsepower of y..., 200 cc is approximately equal to 13.33 horsepower, according to the general rule that every 5-6 cc generates 1 HP for hypercars and high-performance powersport vehicles . However, the exact hp value can vary depending on multiple factors, such as the engine type, stroke, aspiration, and compression ratio., Calc HP From Bore/Stroke. Bore of Engine: inches. Stroke of Engine: inches. Number of Cylinders: Street or Race: Street Engine. Mild Engine., 988 cc is approximately equal to 65.87 horsepower, according to the general rule that every 5-6 cc generates 1 HP for hypercars and high-performance powersport vehicles . However, the exact hp value can vary depending on multiple factors, such as the engine type, stroke, aspiration, and compression ratio., Calculated Form CC TO HP. Enter The CC. HP Result. Formula to convert 179 CC to HP horsepower Divide your vehicle engine's capacity by 15. HP = CC/ 15. HP= horsepower. cc=Cubic Centimeters. for this 179 CC exemple HP= 179 /15 = 11.93. 179 cc= 11.93 HP., To convert hp to kW, use the conversion factor. 1 kW = 1.34102186 hp. then divide both sides of the equation by kW, to get the conversion ratio. 1 = 1.34102186 hp / kW. Use the conversion ratio to complete the unit conversion, basically dividing the input by 1, the hp units cancel out, and we are left with kW units. 1 hp ÷ 1.34102186 hp / kW., 22 cc is approximately equal to 1.47 horsepower, according to the general rule that every 5-6 cc generates 1 HP for hypercars and high-performance powersport vehicles . However, the exact hp value can vary depending on multiple factors, such as the engine type, stroke, aspiration, and compression ratio., displacement = π 4 × 3.4″2 × 3.6″ × 8. displacement = 0.78539816339 × 11.56 × 3.6 × 8. displacement = 261.48 cu in. Engine displacement can be measured in liters, cubic centimeters, or cubic inches. If the bore and stroke measurements are in inches, then the result from the formula above will be in cubic inches. , Study the formula to convert horsepower between RPM. Work is equal to the torque multiplied by the time. The equation is therefore: \text {power}=\tau\times\frac {\text {RPM}} {5252} power = τ × 5252RPM. The constant 5252 is a result of converting RPM to radians per second, and of using the definition of horsepower., Re: How to covert CC to horsepower Use cc'c divided by 42.3 and it would give you the app. Hp. For instance a 148 cc lawn mower at a store is equivlant to a 3.5 Hp, engine . and a 1.73 cc app. 4hp. Still don't use this as a rule on used engines , they loose hp as used. This is just a calculation to give you the basics . in the perfect world