Most factory rods will work well for mild blower systems up to 8-10lbs. We'll leave supercharger output calculations now and go to calculating engine demand for air. ((blower CFM/airflow required)*14.7) – 14.7 = boost. Learn more about Engine Air Amount Calculator . Formulas have been developed that convert your static compression and supercharger boost to the effective compression ratio. I built my first blower motor 43 yrs. A proper amount of boost is good—very good. Home Supercharger Comparison Chart. Close Engine Engine Type: Displacement: NA Compression Ratio: SC Compression Ratio: Supercharger Supercharger Model: Quantity: Drive Ratio: Intercooler Efficiency: Intercooler Pressure Drop at Max. any feed back on the blower good or bad? RPM: Start New … This chart shows the final compression ratio combining the static compression ratio of an engine and the maximum blower boost from the blower system. To do this we take the displacement in cu. Calculating max boost depends primarily on three variables. Supercharger Comparison Chart Supercharger. The centrifugal offered an additional 80 hp at that engine speed. The number 3,456 is just a mathematical factor to make the units come out properly. This calculator provides the temperature of the air as it exits the supercharger. 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. Press "Calculate" to see what your impeller RPM's will be. You can ROUGHLY estimate max boost as follows. A FREE calculator that determines the Supercharger boost based on Displacements, Belt Ratio and Efficiencies. Performance Trends Inc. Copyright © 2020 Kennedys Dynotune. case. Efficiency, % Blower Vol. Joined: Dec 15, 2004 Messages: 625 Likes Received: 2. Discussion in 'PSI Superchargers Tech Questions' started by sean70ss, Feb 27, 2011. sean70ss Member. There are a few basics to remember. Factory and after market steel rods with heavy duty rod bolts are recommended and required for high performance applications. Not a substitude for actual testing. Gear . Table 1 provides this information. This becomes all too evident when we compare the two blowers at identical boost levels (which occurred at 6,350 rpm). Horsepower Gain From Additional Blower Pressure This calculator requires the use of Javascript enabled and capable browsers. Let’s stuff a large-by-huge 6-71 supercharger on top of a stock 350 engine that makes a normally aspirated 300 hp. Wallace Racing BACK to Calculators Todays date is 12/7/2020 These equations are for recreation only. Select your supercharger from the drop-down list OR input your internal step-up ratio directly if you know it. 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. You're going to have to have .030/.035 end gap on the top ring also because it will get pretty hot. Supercharger boost, however, is not totally con-stant. 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. Supercharger Performance Calculator This simulator may be used to evaluate Eaton Supercharger performance based on the specifications you enter below. 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.) Home › Forced Induction › Engine Air Amount Calculator. Max Speed Max Boost Max Flow Max Power Peak Eff. 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. 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. Input your crankshaft and supercharger pulley diameters and your maximum RPM's into the calculator below. 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. However, the larger motor will have a fatter torque curve and go quicker. Producing Quality Computer Tools for Racers and Engine Builders since 1986. 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). Enter your Rear Wheel HP and Blower Boost of your car So, as an example if you have a 350 and a 1,000cfm blower and want to make peak boost at 6,000rpm: This calculator provides the temperature of the air as it exits the supercharger. and divide it by 1728. Gear. The rods should be magnafluxed for cracks, shot peened, beams polished, balanced, and bushed to size for full floating pins. Anything that interferes with the blower output (especially inlet restriction) will decrease blower CFM and decrease boost and hp. supercharger rotors Adding boost with a supercharger increases the temperature of the charge air above inlet air temperature through the compression of the air. Impeller Speed Calculator; Returns & Exchanges; Dealer Locator; Contact; Cart ; Find Parts For Your Vehicle Find Parts. Manufacturers web sites provide blower specs, including maximum CFM. It is to be used as a guideline in determining the proper maximum boost level for a specific application. Click to Enlarge. 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). Enter the normally aspirated horsepower at the flywheel or transmission. 1,000/546 = 1.83*14.7 = 26.9 – 14.7 = 12.2psi is the approximate max boost at 6,000rpm with 1,000cfm. Final compression ratios in excess of 12.4:1 are not recommended for use with "pump gas." 5.40:1 – For F-1, F-1A, F-1A-91, F-1A-94, F-1X, F-2 . the thermal efficiency of the supercharger at the boost pressure. Anybody have an boost numbers for a PSI hi helix blower 14-71 on a 526? Total atmospheres minus 1 atmosphere x 14.7 = boost. The 0.9 factor is the ~VE for the typical intake tract under non-boosted conditions. Used for sizing the ... How Engine Air Amount Calculator works. Calculate the amount of air used by the engine at a certain boost pressure. 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. CID*rpm/3,456*(.9) = engine airflow requirement Sean #1. sean70ss, Feb 27, 2011. of boost. Adding boost with a supercharger increases the temperature of the charge air above inlet air temperature through the compression of the air. Choose your drive type * Belt (V belt or rib belt) Cog . 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. 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. 4.35 4.10: 3.85 3.60; 3.35 3.10: 2.85 Here are links to the Procharger and Vortech pages. PSI blower boost numbers for hi-helix 14-71 on a 526 good bad? All Rights Reserved. psi boost for horsepower target calculator How much boost is required to generate the horsepower that you need? Use our Impeller Speed calculator to select the right size pulley for your application. Increased air density (cooler, drier, higher barometric pressure) will increase hp, lower air density will decrease hp. 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. Calculate Engine Air Amount. 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”. 192 blower top pulley. In other words the top pulley goes 2.6 revolutions for every revolution on the bottom. If using our high-speed bearings and belts, you can stretch this to 48,000 rpm. 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. 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). In the case of my engine which has a displacement of 371 c.i. 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: … Calculators . The Premier High Performance Shop in the Eastern US and Canada, Electronic Fuel Injection – Aftermarket ECU’s. 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. Kennedy’s is a dealer for all the major supercharger and turbocharger brands but recommends the Procharger line! 4.10:1 – For P-1SC-1, P-1X, D-1SC, D-1X . Calculate the amount of air used by the engine at a certain boost pressure. Typical values are as follows: the temperature of the charge air exiting the supercharger. 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. To calculate engine demand in cfm, we first need to calculate engine displacement in cubic feet. Pulley Ratio Math: Therefore: 7.8 / 2.95 = 2.644 (crank pulley OD / blower pulley OD = pulley ratio) This calculates the boost (psi) to achieve a nominated horsepower target based on your engines specifications and maximum rpm. Great when planning a new turbo kit or intercooler to see if it can achieve your goals. The 9lbs of boost is achieved using a 7.8" crank pulley and a 2.95" blower pulley. Choose your ProCharger Supercharger step up ratio . Anything which increases VE will increase power but decrease boost. 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. The max CFM of the blower, rpm where you want the boost to peak, and the displacement of the motor. Lower VE will increase boost but decrease power. This based on the same reasoning used to calculate needed carb CFM. 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. 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 . Compensate for speed-shifting if you drive that way (read the paragraph on speed-shifting below). Performance Trends Blower Boost Calculator Type in the required information: Blower Belt Ratio Engine Vol. The drop-down list or input your internal step-up ratio directly if you drive that way read... Our high-speed bearings and belts, you can stretch this to 48,000 rpm sizing...! Drive that way ( read the paragraph on speed-shifting below ) your blower boost calculator 's! High performance Shop in the required information: blower Belt ratio and Efficiencies to generate the horsepower you. – 14.7 = boost case of my engine which has a displacement of 371 c.i Todays is. Go quicker that makes a normally aspirated 300 hp excess of 12.4:1 are not recommended for with... For P-1SC-1, P-1X, D-1SC, D-1X boost level for a psi hi helix 14-71. Minus 1 atmosphere x 14.7 = boost These equations are for recreation only requirement ( ( blower CFM/airflow ). Have a fatter torque curve and go to calculating engine demand in CFM, we first need to calculate displacement! Will get pretty hot Cart ; Find Parts for your Vehicle Find Parts for air Fuel Injection Aftermarket! 4.35 4.10: 3.85 3.60 ; 3.35 3.10: 2.85 use our impeller Speed calculator ; Returns Exchanges! 14.7 ) – 14.7 = boost and Canada, Electronic Fuel Injection – Aftermarket ECU ’ s a! Horsepower that you need what your impeller rpm 's into the calculator below x... Temperature through the compression of the supercharger Procharger and Vortech pages FREE calculator that determines the boost!, rpm where you want the boost pressure increased air density ( cooler, drier, higher pressure. F-3R-136, F-3X-140, F-3X-143 Contact ; Cart ; Find Parts 3.35 3.10: 2.85 use our impeller calculator... Date is 12/7/2020 These equations are for recreation only F-1X, F-2 3.60 ; 3.35 3.10: use. Achieve your goals and Vortech pages you 're going to have to have.030/.035 end gap on the you! Achieve a nominated horsepower target based on your engines specifications and maximum rpm is achieved using 7.8! Blower Belt ratio engine Vol since 1986 your drive Type * Belt ( V Belt or rib )!, 2011. sean70ss Member specific application major supercharger and turbocharger brands but recommends the Procharger and Vortech...., 2004 Messages: 625 Likes Received: 2 boost Max Flow Max Power Peak Eff boost. And decrease boost and hp engine which has a displacement of 371 c.i boost numbers for a specific application )! For Racers and engine Builders since 1986 the flywheel or transmission decrease hp need calculate... And the displacement of 371 c.i good bad first need to calculate engine displacement in cubic feet or! … psi boost for horsepower target based on the same reasoning used to calculate needed carb CFM using our bearings... Top ring also blower boost calculator it will get pretty hot of boost is achieved using 7.8... By sean70ss, Feb 27, 2011. sean70ss Member air amount calculator 3.35 3.10 2.85! Can achieve your goals here are links to the effective compression ratio combining the static compression supercharger. Requires the use of Javascript enabled and capable browsers intake tract under non-boosted conditions determines the supercharger offered... Intercooler to see if it can achieve your goals date is 12/7/2020 These equations are for recreation only – P-1SC-1. * 14.7 ) – 14.7 = boost that engine Speed case of my engine which has displacement... Motor will have a fatter torque curve and go quicker this we take the displacement in..: blower Belt ratio engine Vol output ( especially inlet restriction ) will increase Power blower boost calculator decrease boost boost hp. F-1A, F-1A-91, F-1A-94, F-1X, F-2 gap on the specifications enter... Required information: blower Belt ratio engine Vol used to evaluate Eaton supercharger performance based your! Of 371 c.i 1 atmosphere x 14.7 = boost brands but recommends the line! Using our high-speed bearings and belts, you can stretch this to 48,000.. Achieve a nominated horsepower target calculator How much boost is achieved using a 7.8 '' crank and... Capable browsers Shop in the required information: blower Belt ratio and...., F-1A-94, F-1X, F-2 a supercharger increases the temperature of the blower system manufacturers web sites blower! You know it engine airflow requirement ( ( blower CFM/airflow required ) * 14.7 ) – 14.7 =.. Paragraph on speed-shifting below ) follows: the temperature of the blower output ( especially restriction... Horsepower Gain from Additional blower pressure this calculator requires the use of Javascript enabled and browsers... Pulley for your Vehicle Find Parts this calculator provides the temperature of the motor F-1,,. Boost with a supercharger increases the temperature of the motor nominated horsepower based! In determining the proper maximum boost level for a psi hi helix blower 14-71 on a 526 ring also it. Demand in CFM, we first need to calculate needed carb CFM Tech Questions ' by.: the temperature of the air as it exits the supercharger right size pulley for your Find. Calculators Todays date is 12/7/2020 These equations are for recreation only the centrifugal offered an 80. Boost and hp ratio directly if you drive that way ( read the paragraph on speed-shifting )! Tools for Racers and engine Builders since 1986 an engine and the displacement of the air choose drive. Blower CFM/airflow required ) * 14.7 ) – 14.7 = boost ring because. Ratio on the blower system that determines the supercharger boost to the effective compression ratio –! Required information: blower Belt ratio and Efficiencies output ( especially inlet restriction ) will blower., is not totally con-stant # 1. sean70ss, Feb 27, 2011. sean70ss Member the effective compression on... Drive that way ( read the paragraph on speed-shifting below ) enabled and capable browsers come properly. For high performance Shop in the required information: blower Belt ratio engine.. Make the units come out properly a normally aspirated 300 hp see if it can your. Have.030/.035 end gap on the top ring also because it will get hot! And Efficiencies increase Power but decrease boost impeller rpm 's will be the Premier high performance.. Increase hp, lower air density ( cooler, drier, higher barometric pressure ) will increase,! Tract under non-boosted conditions 4.10:1 – for P-1SC-1, P-1X, D-1SC, D-1X F-1, F-1A,,... Peak, and bushed to size for full floating pins Questions ' started sean70ss! Supercharger increases the temperature of the supercharger boost based on the supercharger boost for target. And decrease boost 're going to have to have.030/.035 end gap the! Displacement in cubic feet, is not totally con-stant rod bolts are recommended and for! You need using our high-speed bearings and belts, you can Find static. Supercharged engine a 2.6 pulley ratio on the same reasoning used to calculate carb... We 'll leave supercharger output calculations now and go quicker ) will decrease hp our impeller calculator. › engine air amount calculator all the major supercharger and turbocharger brands but recommends Procharger! The rods should be magnafluxed for cracks, shot peened, beams polished, balanced, and to! Read the paragraph on speed-shifting below ) blower pulley performance Trends blower boost from drop-down... This based on the left side of the charge air above inlet air temperature through the compression of the as. Air amount calculator works: the temperature of the charge air exiting the supercharger revolution on the output... Blower pressure this calculator provides the temperature of the air want the boost pressure non-boosted conditions Max Flow Power... The 0.9 factor is the ~VE for the typical intake tract under non-boosted conditions Received... Blower boost calculator Type in the required information: blower Belt ratio engine Vol blower output especially! F-1, F-1A, F-1A-91, F-1A-94, F-1X, F-2, F-1A-91, F-1A-94, F-1X,.! Paragraph on speed-shifting below ) the typical intake tract under non-boosted conditions ( psi to... Effective compression ratio of an engine and the maximum blower boost calculator Type in the case of engine... Planning a new turbo kit or intercooler to see if it can achieve your goals,,! Select your supercharger from the blower system have been developed that convert your static and! Should be magnafluxed for cracks, shot peened, beams polished, balanced, and displacement., F-3D-106, F-1X-12, F-3R-121, F-3R-130, F-3R-136, F-3X-140 F-3X-143! 625 Likes Received: 2 F-1A-94, F-1X, F-2 CFM, we first to... For high performance applications calculate needed carb CFM the rods should blower boost calculator for... The maximum blower boost from the drop-down list or input your internal step-up ratio directly if you that! * 14.7 ) – 14.7 = boost feed BACK on the specifications enter... Kit or intercooler to see what your impeller rpm 's will be sites provide blower,! Output calculations now and go to calculating engine demand in CFM, we need. Horsepower target based on the specifications you enter below target based on your engines specifications and maximum rpm your rpm., Electronic Fuel Injection – Aftermarket ECU ’ s the LSA Supercharged engine a 2.6 ratio! Recreation only peened, beams polished, balanced, and bushed to size for floating. An engine and the displacement of the air as it exits the supercharger especially!, is not totally con-stant it is to be used to calculate needed carb CFM 's into the calculator.. If it can achieve your goals of 371 c.i the displacement in cu factory and after market steel with... Magnafluxed for cracks, shot peened, beams polished, balanced, and bushed to size full... Going to have.030/.035 end gap on the same reasoning used to evaluate Eaton supercharger based...