30 lb injectors max hp. There is a formula that factors in fuel pressure.
30 lb injectors max hp. The key is to estimate HP expected as close as realisticlly possible and size for it then test for final A/F ratio to be sure you got what you had designed for. Title: Book2 Flow Rate in LB per hour: 30 LBS/HR @ 43. 5 and multiply the result by the number of injectors. Since the motor does not need this much fuel the computer can bring the duty cycle down to what the motor needs. 85 = 470 HP Apr 11, 2017 · This calculation can also be reversed to give the maximum safe hp a set of injectors can support, which gives: Max safe hp = [ (injector size) x (total # of injectors) x (max duty cycle) ]/BSFC Example: The following guide is a general rule of thumb for sizing fuel injectors on an 8-cylinder engine using a BSFC of 0. Dec 10, 2009 · Bosch 160 aka 1680cc fuel injectors on a SBF with boost and E85, what is the max theoretical horsepowerS it can make? Also what is the BSFC of boosted E85? 2008 Ford F250 FX4 6. (300 X 0. J. 50. 8) = 23. Then we have 8 cylinders times 0. Example: 19/. 4L, 13. ) Engine aspiration, {Turbocharged, Supercharged, and Naturally Aspirated engines have different BSFC’s (see Glossary of Terms for definitions)} Find Fuel Injectors 30 lbs. Calculate E85, e85 injector calculator E98 Nov 7, 2006 · 8 30lbs injectors will flow something like 475 hp (claim from several ford sites). Swapping to 30 lb injectors over 24's wouldn't be my first pick either. For example, a naturally aspirated, 300 hp engine (BSFC 0. 75 / . 5 lb/hr (8 injectors) x (0. Jun 21, 2024 · So when we crunch the numbers we get 650 horsepower times 0. We then divide 325 lb/hr by 6. 55 to . 80 Duty Cycle = 23. 25 x 1. This all assumes an operating injector pressure of 40 psi. ** Maximum Injector Duty Cycle should be around 90% max for safe operation. Feb 19, 2019 · Total max HP < 300. Example: 42 lb/hr injector (Injector Size x 8) / 0. FuelTech FT600, FT550, FT550LITE, and FT450 engine management systems are capable of controlling any fuel injector sizing, even the massive 850 lb/hr injectors found in super-high horsepower applications. They were showing over 100% IDC by 6,000 rpm Feb 18, 2010 · Max power on stock 24Lb injectors. 30 = 40. That pump was completely tapped out to hit that number, though. Flow Rate / PSI - Referred to in CC (cubic centimeters), this is how much fuel the injector will move over 1 minute. s. /hr. per hour) for each horsepower made. 5 PSI Resistance: 12 ohms (High Impedance, High Resistance) Voltage: 8-15 Volts, nominal 13. 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 producing. 8 and get 47. 79 lb/hr as our required injector size to feed 650 horsepower, naturally aspirated on gasoline. 9) 600 HP Supercharged engine Number of injectors = 8 Injector size = (600 HP) x (0. 5 PSI Flow Rate in CC per minute: 315 CC/min @ 43. Ran my motor with 525 HP / 933 ft-lb for quite a while, and when I pulled it apart to get built, everything was straight!. 60 for supercharged engines, and . Engine. It determines how much fuel can be delivered to an engine’s combustion chamber and is critical for achieving the desired horsepower while maintaining proper air-fuel ratios for efficiency and performance. So 4 of em with rough math would be about half that. If you are only going to be hitting the max for short periods of time you are probably okay with 30 lb injectors. So, if you divide 31/. i. These ratings are for naturally aspirated engines. This uses a 100% duty cycle. The addition of a Peak & Hold driver box to any ECU allows ultimate control of low impedance fuel injectors. Ford fuel injectors are rated at a specific pressure (39 PSI) and at 100% duty cycle. 6 or rounding up to a 42 lb/hr injector. 8 you get close to 40 lb injectors. 35 needs 168. 5 = 38, 38 x 8 = 304 HP 24/. This should be . The injector size calculator calculate the amount of HP / KW an injector of a specific size can support. 7 lb/hr (8 injectors) x (0. 8 With a known injector fuel flow rate you can get a rough estimate of the systems capacity by using: HP = IFR * number of injectors * 0. By changing your fuel pressure, you can change the flow rates of your injectors. ) # of Cylinders Fuel Pressure (psi) Injector full flow value (size) in CC/Min Engine Aspiration Naturally Aspirated Supercharged Turbocharged Duty Cycle 80% 85% 90% 95% 100% Fuel Used Gasoline E85 Calculate May 14, 2002 · Injector HP ratings: divide flow rating by. of fuel per injector at an 80% (0. 5 37. Apr 28, 2008 · Injector Flow Rate (lbs/hr) = HP * BSFC----- number of injectors * 0. ) and get Free Shipping on Orders Over $109 at Summit Racing! Shop the Labor Day Sale and Save Now! Jul 4, 2011 · 2004 M6 Cosmos Purple GTO K&N,06 Tails, ROH's, Pedders Drags. 43 lb/hr injector (24 lb/hr is the closest) This will vary per BSFC you want to run and injector duty cycle preferred Jun 10, 2022 · 31. * Brake Specific Fuel Consumption: is the amount of fuel consumed (in lbs. 50 BSFC = 18. 0 Amps Pressure: Min 30 PSIG/ Max 100 PSIG O-Rings Included: Yes, on the injectors Fuel Delivery: Single Nozzle Cone Shape Mar 30, 2016 · I dynoed 525 HP on a 275k mile stock CP3 with a S371 turbo and Industrial Injection +60% injectors. 5 BSFC)= 27. Injector Size Fuel Pressure Duty Cycle BSFC Max HP 29 Lb/Hr 43 p. I too am hunting for 30lbs injectors on Ebay, I just need 8 of em. Dec 31, 2007 · Fod injectors are also rated at 39 psi of pressure. 85 duty cycle equals 6. 57 BSFC) = 47. 9) The following chart provides maximum horsepower levels Jan 11, 2024 · Injector size refers to the flow rate of fuel injectors in an engine, typically measured in pounds per hour (lb/hr). 85% 0. And "only" 933 ft-lb. I. R. 5 = 672 HP. 45 to . 2:1 cr, but some day one might get the interest to spray the engine. Guys seem to be getting by on a lot more than typical math calcs would suggest. 5 X . 40 needs 192. Oct 26, 2007 · For instance a modern stock engine has a BSFC rating of . Dec 26, 2005 · Inj sizing 24 lbs needs min 115 l/hr pump capacity. 50 for naturally aspirated engines, . Jump to Latest 12K views 9 replies 30 lb/hr_____408 hp @ 85% Duty Cycle Aug 15, 2005 · HP is supposed to be in the neighboorhood of 375 and 450 ft lbs with 10. 4. Fuel injectors should never be run at 100% duty cycle. 8----- BSFC where IFR = Injector Flow Rate (lbs/hr) Increasing the fuel pressure can often provide increased fuel flow and better atomization. 60 to . Low impedance injectors are used on high performance applications, where high impedance injectors are commonly used on stock applications. My Vega made 729hp with the 80 lb Siemens injectors at 58 psi base on e85. Examples 400 HP street engine Number of injectors = 8 Injector size = (400 HP) x (0. 5 = 60, 60 x 8 = 480 HP Jul 25, 2005 · IDC = Injector Duty Cycle BSFC = Brake Specific Fuel Consumption Example: 300 HP / 8 cylinders = 37. Maximum injector duty cycle (IDC) (In order to be conservative, Fuel Injector Clinic recommends a maximum duty cycle of 90%. 5), with 8 injectors will need 23. 5 Volts Amperage: 1. 5 = 48, 48 x 8 = 384 HP 30/. Estimating HP Potential from Injector Size (lb/hr) –8 Cyl. 65 for turbocharged engines. Oct 14, 2007 · The general recommendation seems to be that it is a good idea to run at 80% or less of duty cycle for longevity of injectors. 48 400 Rated HP Levels by Injector & Fuel Pressure. You might not find a fuel injector rated for your exact needs. 672 x 0. Reduce this by 30 percent to compensate for 70 percent duty cycle. Impedance - Simply put, it's the electrical resistance of the injector. PRO-FL04 ELECTRONIC . For example: An injector that flows 330 cc @ 40 psi will flow 369 cc @ 50 psi. 5 BSFC (42 x 8) / 0. The low torque is the key. Nov 27, 2006 · Injector duty cycle is the amount of time (as a percentage) that the injector will remain engerized (delivering fuel). fuel pump is going to be a 255lph and 30 lb injectors with a 90mm LMAF and throttle body from a 460, which I beleive is twin 57mm. 8) duty cycle. 3@101 Dec 6, 2015 · Max RWHP on 80lb injectors on E85. Injector Advertised Flow Rate (lbs. Fuel Pressure Modification. 30 gears Detroit Tru-Trac and 90% max injector duty cycle during any WOT extended run. (Increase the pressure above 39 psi and output increase. 4 lbs. You're fine, even though I would love to sell you my FRP 30lb'ers . 8. P =/ The New Goat 2004 M6 Cosmos Purple GTO Maggie 112, Innovators West 8" overdrive, ECS tensioner, Pacesetter headers, SLP loudmouth 2 catback, ROH's, FAST 60's, DW65c, KB BAP, 160 Stat. 5) ÷ (8 X 0. 52 which given the identical injector 30 lb above in a 80% duty cycle will only support 45 HP per injector for a total of 360 HP for a V8 So depending on the fuel pressure, BSFC rating the duty cycle and the tune itself 1200 HP on paper is attainable but with a modern fuel injected engine from, select the 30 lb/hr injector. 85 duty cycle, . 75 18. A "safe" maximum is 90%. 50 BSFC, 39 psi) Jan 12, 2004 · C5 Forced Induction/Nitrous - Max Hp achieved using 50 lb injectors? - I know what the math saysjust wanted to see what you guys have achieved in the real world (please list if you are naturally aspirated or turbo/sc). Decrease it below 39 psi and output decreases. What is the Jul 29, 2003 · With a 6:1 disc in the FMU and 8lb of boost the 30 lb injectors act like 48 lb injectors which max out at about 675 HP when they run at 100 % duty. Oct 29, 2006 · lb/hr = max hp x brake-specfic fuel consup / number of injectors . 50 lb/hr/HP or 325 lb/hr of fuel needed for the engine. 30 lb needs 144. ) A more accurate formula would be: Injector size x Numbers of Injectors x Injector Duty Cycle / BSFC = Maximum Horsepower eight 19 lb/hr inj = 258 max HP (. There is a formula that factors in fuel pressure.