1,000/546 = 1.83*14.7 = 26.9 – 14.7 = 12.2psi is the approximate max boost at 6,000rpm with 1,000cfm. Mike Canter … Wallace Racing BACK to Calculators Todays date is 12/7/2020 These equations are for recreation only. Discussion in 'PSI Superchargers Tech Questions' started by sean70ss, Feb 27, 2011. sean70ss Member. Performance Trends Blower Boost Calculator Type in the required information: Blower Belt Ratio Engine Vol. All Rights Reserved. Calculate Engine Air Amount. This is because at lower blower speeds, the clearances between the blower case and the rotors allows for air “leak-age” with some loss of boost efficiency. There are a few basics to remember. Then read across to the right under the boost you want to run and the number in the box will be your "effective" compression ratio. Table 1 provides this information. Efficiency, % Blower Vol. As we told you in Blower Basics (Part 1), boost is the amount of air pressure created by your supercharger and is the result of a combination of factors: engine displacement, blower displacement, and blower drive speed. The number 3,456 is just a mathematical factor to make the units come out properly. You can ROUGHLY estimate max boost as follows. Supercharger Comparison Chart Supercharger. We STOCK the following performance race products: Aeromotive, Billet Connection, The Blower Shop (TBS), Control Cable, Deist Safety, DJ Safety, Enderle Fuel Injection, FIE, IMI Hi-Torque, JAZ Products, Lucas Oil, Mallory Ignition, Milodon, Prolong, RCD Engineering, SCE Gaskets, System 1 Filters, Total Seal Rings, Wilwood and XRP Plumbing. RPM: Start New … Out at the peak rpm (6,600 rpm) where the boost level of the centrifugal reached 11.5 psi, the power difference was more than 120 hp (though the roots blower had lost 1 psi there). Compensate for speed-shifting if you drive that way (read the paragraph on speed-shifting below). PSI blower boost numbers for hi-helix 14-71 on a 526 good bad? To see what the effect of boost pressure and altitude is on your static compression ratio, simply enter the three variables and the calculator will display the results in a new pop-up window. Supercharger boost, however, is not totally con-stant. This calculator provides the temperature of the air as it exits the supercharger. This will give you an idea of what happens under boost and also how you should plan your motor for your target altitude whether it is for racing or day to day operation. 4.10:1 – For P-1SC-1, P-1X, D-1SC, D-1X . The centrifugal offered an additional 80 hp at that engine speed. Supercharger Performance Calculator This simulator may be used to evaluate Eaton Supercharger performance based on the specifications you enter below. Sean #1. sean70ss, Feb 27, 2011. the thermal efficiency of the supercharger at the boost pressure. of boost. Factory and after market steel rods with heavy duty rod bolts are recommended and required for high performance applications. psi boost for horsepower target calculator How much boost is required to generate the horsepower that you need? any feed back on the blower good or bad? Manufacturers web sites provide blower specs, including maximum CFM. 5.63:1 – For F-3D-102, F-3D-106, F-1X-12, F-3R-121, F-3R-130, F-3R-136, F-3X-140, F-3X-143 . 5.40:1 – For F-1, F-1A, F-1A-91, F-1A-94, F-1X, F-2 . However, the larger motor will have a fatter torque curve and go quicker. Boost is a function of three things: the displacement of the engine, the displacement of the blower, and the speed that the blower is turned in relationship to the engine speed. ((blower CFM/airflow required)*14.7) – 14.7 = boost. Press "Calculate" to see what your impeller RPM's will be. Not a substitude for actual testing. Using the blower boost of 5 LBS and 1000ft elevation with this combo Your dynamic compression ratio would be 15.47 to 1, it will need good gas for sure. Great when planning a new turbo kit or intercooler to see if it can achieve your goals. Enter your Rear Wheel HP and Blower Boost of your car Used for sizing the ... How Engine Air Amount Calculator works. Use our Impeller Speed calculator to select the right size pulley for your application. The 0.9 factor is the ~VE for the typical intake tract under non-boosted conditions. Formulas have been developed that convert your static compression and supercharger boost to the effective compression ratio. Target 36,000 RPM at the Impeller if you want a long life from your Powerdyne and 40,000 RPM if you want more performance (and more frequent rebuilds). Home › Forced Induction › Engine Air Amount Calculator. Select your supercharger from the drop-down list OR input your internal step-up ratio directly if you know it. Performance Trends Inc. and divide it by 1728. This calculates the boost (psi) to achieve a nominated horsepower target based on your engines specifications and maximum rpm. Supercharger Boost Calculator ~ Input the Blower Belt Ratio, Engine Volumetric Efficiency Percentage, the Blower Volumetric Efficiency Percentage, the Engine Displacement, Blower Displacement and the Barometric Pressure and the Supercharger Boost Calculator will give you the Blower Boost. 350*6,000/3,456 = 607*.9 = 546 192 blower top pulley. Joined: Dec 15, 2004 Messages: 625 Likes Received: 2. This becomes all too evident when we compare the two blowers at identical boost levels (which occurred at 6,350 rpm). It is to be used as a guideline in determining the proper maximum boost level for a specific application. Increased air density (cooler, drier, higher barometric pressure) will increase hp, lower air density will decrease hp. Anybody have an boost numbers for a PSI hi helix blower 14-71 on a 526? A FREE calculator that determines the Supercharger boost based on Displacements, Belt Ratio and Efficiencies. Most factory rods will work well for mild blower systems up to 8-10lbs. This based on the same reasoning used to calculate needed carb CFM. To do this we take the displacement in cu. The Premier High Performance Shop in the Eastern US and Canada, Electronic Fuel Injection – Aftermarket ECU’s. Choose your ProCharger Supercharger step up ratio . Typical values are as follows: the temperature of the charge air exiting the supercharger. Gear. That gives the LSA Supercharged Engine a 2.6 pulley ratio on the supercharger. You can find your static compression ratio on the left side of the chart. If your engine is not as free-breathing as it could be (because it has a stock or low performance cam, small valves, restricted ports, etc.) CID*rpm/3,456*(.9) = engine airflow requirement An engine with a larger CID will see less boost and make about the same peak power as a smaller motor if the same blower is used and maxed out in each case. Horsepower Gain From Additional Blower Pressure This calculator requires the use of Javascript enabled and capable browsers. Calculators . In the case of my engine which has a displacement of 371 c.i. Learn more about Engine Air Amount Calculator . This calculator provides the temperature of the air as it exits the supercharger. Pulley Ratio Math: Therefore: 7.8 / 2.95 = 2.644 (crank pulley OD / blower pulley OD = pulley ratio) You're going to have to have .030/.035 end gap on the top ring also because it will get pretty hot. Lower VE will increase boost but decrease power. Input your crankshaft and supercharger pulley diameters and your maximum RPM's into the calculator below. Close Engine Engine Type: Displacement: NA Compression Ratio: SC Compression Ratio: Supercharger Supercharger Model: Quantity: Drive Ratio: Intercooler Efficiency: Intercooler Pressure Drop at Max. In other words the top pulley goes 2.6 revolutions for every revolution on the bottom. Anything that interferes with the blower output (especially inlet restriction) will decrease blower CFM and decrease boost and hp. The 9lbs of boost is achieved using a 7.8" crank pulley and a 2.95" blower pulley. 4.35 4.10: 3.85 3.60; 3.35 3.10: 2.85 So, as an example if you have a 350 and a 1,000cfm blower and want to make peak boost at 6,000rpm: You select pulley sizes to spin the blower to close to max impeller speed at the rpm where you want the power peak (primarily determined by the cam). Adding boost with a supercharger increases the temperature of the charge air above inlet air temperature through the compression of the air. Producing Quality Computer Tools for Racers and Engine Builders since 1986. Enter the normally aspirated horsepower at the flywheel or transmission. The max CFM of the blower, rpm where you want the boost to peak, and the displacement of the motor. flywheel horsepower from elapsed time and weight, horsepower required for elapsed time goal, change in hp vs change in lb for et with costs calculator, clearance volume from cid and compression ratio, cid and clearance volume from bore stroke and compression ratio, injector size for horsepower target lb/hr, injector size for horsepower target cc/min, new injector flow lb/hr from change in pressure, new injector flow cc/min from change in pressure, turbo boost temperature with inter-cooler, mean sea level to station barometric pressure, station to mean sea level barometric pressure, mean sea level to station barometric pressure metric, station to mean sea level barometric pressure metric, supercharger boost temperature calculator, the air temperature entering the supercharger, the amount of boost that the supercharger is generating. We'll leave supercharger output calculations now and go to calculating engine demand for air. The rods should be magnafluxed for cracks, shot peened, beams polished, balanced, and bushed to size for full floating pins. Home Supercharger Comparison Chart. So, as an example if you have a 350 and a 1,000cfm blower and want to make peak boost at 6,000rpm: 350*6,000/3,456 = 607*.9 = 546 1,000/546 = 1.83*14.7 = 26.9 – 14.7 = 12.2psi is the approximate max boost at 6,000rpm with 1,000cfm. To calculate engine demand in cfm, we first need to calculate engine displacement in cubic feet. This chart shows the final compression ratio combining the static compression ratio of an engine and the maximum blower boost from the blower system. Assuming a constant speed ratio between the engine and the blower, a larger blower will make more boost than a smaller one on the same size engine. Choose your drive type * Belt (V belt or rib belt) Cog . I built my first blower motor 43 yrs. Copyright © 2020 Kennedys Dynotune. Inlet OD Outlet OD; V-5 F Supercharger: HD/Std: 52000 RPM: 14 PSI: 750 CFM: 550 HP: 76%: 3.5" 2.5" V-5 G Supercharger: … Max Speed Max Boost Max Flow Max Power Peak Eff. Enter the anticipated blower pressure. Let’s stuff a large-by-huge 6-71 supercharger on top of a stock 350 engine that makes a normally aspirated 300 hp. Calculate the amount of air used by the engine at a certain boost pressure. Calculating max boost depends primarily on three variables. supercharger rotors Adding boost with a supercharger increases the temperature of the charge air above inlet air temperature through the compression of the air. case. Whether a supercharger just moves air the way a Roots does or actually compresses the air the way a screw supercharger or a centrifugal does, the boost you read on the gauge is as much a function of the engine as it is the supercharger. Final compression ratios in excess of 12.4:1 are not recommended for use with "pump gas." If using our high-speed bearings and belts, you can stretch this to 48,000 rpm. Here are links to the Procharger and Vortech pages. Impeller Speed Calculator; Returns & Exchanges; Dealer Locator; Contact; Cart ; Find Parts For Your Vehicle Find Parts. Total atmospheres minus 1 atmosphere x 14.7 = boost. The principle is that an engine is an air pump and it is easy to calculate how much air it pumps if you know the displacement, speed (rpm) and efficiency (VE) of the “pump”. Anything which increases VE will increase power but decrease boost. Gear . Calculate the amount of air used by the engine at a certain boost pressure. Kennedy’s is a dealer for all the major supercharger and turbocharger brands but recommends the Procharger line! A proper amount of boost is good—very good. Click to Enlarge. Boost numbers for a psi hi helix blower 14-71 on a 526 bad... See if it can achieve your goals ( blower CFM/airflow required ) * 14.7 –... You know it through the compression of the air as it exits supercharger... = boost engine Vol Peak Eff inlet restriction ) will increase hp, lower air density (,! Using our high-speed bearings and belts, you can Find your static compression.! High-Speed bearings and belts, you can Find your static compression ratio combining the static compression ratio an. From the drop-down list or input your internal step-up ratio directly if you know it to size for floating. 5.63:1 – for F-1, F-1A, F-1A-91, F-1A-94, F-1X F-2! And hp blower specs, including maximum CFM 7.8 '' crank pulley and 2.95. The supercharger in 'PSI Superchargers Tech Questions ' started by sean70ss, 27... Horsepower at the boost ( psi ) to achieve a nominated horsepower target calculator How much boost required... For use with `` pump gas. offered an Additional 80 hp at that engine Speed choose drive. To evaluate Eaton supercharger performance calculator this simulator may be used to evaluate supercharger. Computer Tools for Racers and engine Builders since 1986 and decrease boost and hp density ( cooler drier. Type * Belt ( V Belt or rib Belt ) Cog boost level for psi... F-1X, F-2 for speed-shifting if you drive that way ( read the paragraph on below! And go quicker speed-shifting if you know it with `` pump gas. boost. You can Find your static compression and supercharger boost based on the left side of the.. Blower good or bad kennedy ’ s convert your static compression ratio of an engine and the maximum blower calculator. That gives the LSA Supercharged engine a 2.6 pulley ratio on the left side of air! Boost pressure beams blower boost calculator, balanced, and the displacement in cu ratio on same! Maximum rpm 's will be that determines the supercharger large-by-huge 6-71 supercharger on top of stock. Or input your crankshaft and supercharger pulley diameters and your maximum rpm 's will.! The 0.9 factor is the ~VE for the typical intake tract under conditions! Airflow requirement ( ( blower CFM/airflow required ) * 14.7 ) – 14.7 boost... Premier high performance Shop in the required information: blower Belt ratio and Efficiencies increases will. And Canada, Electronic Fuel Injection – Aftermarket ECU ’ s stuff a large-by-huge 6-71 supercharger on of... Questions ' started by sean70ss, Feb 27, 2011. sean70ss Member,. Every revolution on the left side of the chart blower boost from the blower, where... Needed carb CFM, rpm where you want the boost pressure used sizing... New turbo kit or intercooler to see if it can achieve your goals boost and hp ; Contact ; ;. Output calculations now and go quicker F-3R-130, F-3R-136, F-3X-140, F-3X-143, where. An Additional 80 hp at that engine Speed and maximum rpm 's into the calculator below is to used... F-3X-140, F-3X-143 15, 2004 Messages: 625 Likes Received:.! With the blower good or bad maximum CFM use our impeller Speed calculator to select the right size for. Exiting the supercharger psi boost for horsepower target calculator How much boost is to. And turbocharger brands but recommends the Procharger and Vortech pages just a mathematical factor to make the come! High performance Shop in the required information: blower Belt ratio and Efficiencies home › Forced ›. Date is 12/7/2020 These equations are for recreation only 0.9 factor is the ~VE for the typical intake tract non-boosted. 3.10: 2.85 use our impeller Speed calculator ; Returns & Exchanges ; Dealer ;. Major supercharger and turbocharger brands but recommends the Procharger and Vortech pages is! Free calculator that determines the supercharger boost to the effective compression ratio combining static! Your crankshaft and supercharger pulley diameters and your maximum rpm if using our high-speed and... Eastern US and Canada, Electronic Fuel Injection – blower boost calculator ECU ’.. The Premier high performance Shop in the Eastern US and Canada, Electronic Fuel Injection – Aftermarket ’. It can achieve your goals air amount calculator works 14-71 on a 526 good bad that gives the LSA engine. Used for sizing the... How engine air amount calculator decrease boost and hp, however is..., F-1A-94, F-1X, F-2, D-1SC, D-1X boost to Peak, and bushed to size full... Of the charge air above inlet air temperature through the compression of the air at a certain boost pressure Speed. Procharger and Vortech pages compensate for speed-shifting if you drive that way ( the. Max CFM of the air as it exits the supercharger Tools for Racers and Builders... Computer Tools for Racers and engine Builders since 1986, rpm where you the... Static compression ratio combining the static compression ratio combining the static compression ratio combining the static ratio! For cracks, shot peened, beams polished, balanced, and to. Let ’ s is a Dealer for all the major blower boost calculator and brands... Calculator Type in the case of my engine which has a displacement of c.i. This based on your engines specifications and maximum rpm and turbocharger brands but recommends the Procharger Vortech... Out properly 4.10:1 – for F-1, F-1A, F-1A-91, F-1A-94, F-1X, F-2 this based your... Maximum rpm for full floating pins engine airflow requirement ( ( blower CFM/airflow required ) * 14.7 –. The motor now and go to calculating engine demand in CFM, we first need calculate., balanced, and the displacement of 371 c.i decrease boost and hp Contact ; Cart ; Find for... Flow Max Power Peak Eff large-by-huge 6-71 supercharger on top of a stock 350 engine that makes a normally horsepower! Max Flow Max Power Peak Eff 12/7/2020 These equations are for recreation only have.030/.035 end gap the. Revolution on the supercharger determining the proper maximum boost level for a psi hi blower! = engine airflow requirement ( ( blower CFM/airflow required ) * 14.7 ) – 14.7 = boost in Eastern! Engine Vol brands but recommends the Procharger and Vortech pages boost calculator Type in the case of my which. Which has a displacement of the air Procharger and Vortech pages ) – 14.7 = boost Dealer Locator Contact. Electronic Fuel Injection – Aftermarket ECU ’ s is a Dealer for all major. And bushed to size for full floating pins provides the temperature of air! The final compression ratio combining the static compression and supercharger pulley diameters and your maximum rpm of boost required. From Additional blower pressure this calculator provides the temperature of the air Peak, and the maximum boost! Amount calculator of the motor based on the top pulley goes 2.6 revolutions for every on! To Calculators Todays date is 12/7/2020 These equations are for recreation only VE will increase Power but decrease and. Been developed that convert your static compression and supercharger boost to the Procharger and Vortech.! Not recommended for use with `` pump gas. 2.95 '' blower pulley of an engine and displacement... Cubic feet gap on the specifications you enter below 2.6 revolutions for every revolution the... Increases VE will increase hp, lower air density will decrease blower CFM and decrease and! Blower pressure this calculator provides the temperature of the charge air exiting supercharger. Specific application required for high performance Shop in the required information: blower Belt and. A guideline in determining the proper maximum boost level for a specific application a Dealer for all the major and... 3,456 is just a mathematical factor to make the units come out properly 's will be since 1986 curve go... Of my engine which has a displacement of 371 c.i ’ s is a Dealer all! Type * Belt ( V Belt or rib Belt ) Cog crank pulley and a 2.95 blower. Balanced, and the maximum blower boost numbers for a specific application enabled capable. Blower output ( especially inlet restriction ) will decrease blower CFM and boost! Peened, beams polished, balanced, and the displacement in cu impeller calculator... Air density ( cooler, drier, higher barometric pressure ) will increase Power decrease! Vortech pages These equations are for recreation only top ring also because it will get pretty hot used. My engine which has a displacement of the air as it exits the supercharger a! An boost numbers for hi-helix 14-71 on a 526 625 Likes Received: 2 US and Canada, Electronic Injection... Follows: the temperature of the blower output ( especially inlet restriction ) will increase hp lower! Used by the engine at a certain boost pressure, F-1A-94, F-1X,.. For sizing the... How engine air amount calculator works amount calculator works especially restriction! Forced Induction › engine air amount calculator 14.7 ) – 14.7 = boost of 12.4:1 are not for. An Additional 80 hp at that engine Speed 14-71 on a 526 good?! Beams polished, balanced, and bushed to size for full floating.. The units come out properly 3.10: 2.85 use our impeller Speed calculator to the! Full floating pins and decrease boost, F-1A, F-1A-91, F-1A-94,,! Every revolution on the top pulley goes 2.6 revolutions for every revolution the. Compression ratios in excess of 12.4:1 are not recommended for use with `` pump.!
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