How do I fine-tune my fuel injector flow rate. The purple and red lines show how many amps are used at different pressures. Comparing volume at 60psi for a high boost kit with correct injectors to 90psi for a low boost application, with small injectors and an FMU, volume is reduced by 28%. When choosing wire gauge, circuit breakers, and relays make sure to size them for the maximum amp draw. 6psi boost/8:1 FMU, intercooler, 91psi and 13.5v, volume 370lbs/hr. removing an FMU and installing the correct injector, increases flow, maximizing the HP potential of any fuel system. A typical gasoline engine will use less than 1lb of fuel to make 1 HP for 1 hour, so expect the BSFC number to be less than 1. Anyone who has experience in building high horsepower cars has learned the value of simplicity. BG wants you to send the pump back every two years, for new guts, no joke. flow rate drops to 62 gph. It features an externally adjustable bypass (16 to 25+ psi) and uses -10 AN outlet, -12 AN inlet with -8 AN return line. The fuel pump is an essential part associated with engine performance. Often deleted on drag cars, the presence or lack of a correctly sized and properly functioning alternator is vital to consider when choosing a fuel pump. Another way to prevent getting this page in the future is to use Privacy Pass. Given Horsepower x .50 lb fuel/hp = lbs of fuel for given horsepower. Keep it Simple. DW400 Tech info. This will give you fuel usage in lbs./hr. Minimum flow rate needs can be calculated by multiplying peak horsepower by BSFC. To get lph divide lbs./hr. Most cars with a charging system and appropriate wiring can supply 13.5 volts to the pump. At 60 psi. Last one was 320 to the door Dealer cost. • Fuel Injection will usually be between 35-65 psi. It is obvious that eliminating unnecessary fuel pressure rise, e.g. of fuel per hr. It is usually measured in gallons per hour (gph) or liters per hour (lph). Fuel Pumps are sized by flow rate. This brings us to our third fuel pump performance factor; voltage supply as measured at the fuel pump terminals. Clearly the effect of rising fuel pressure has significant impact on flow volume. Graphs for all Aeromotive fuel pumps can be found in our catalog, illustrating flow volume across a reasonable pressure range. The following chart has some general guidelines for selecting a fuel pump for a gasoline engine: Everything you need for anything you drive. Higher voltage at the pump terminals increases motor torque, resulting in more rpm and an increased flow volume for a given pressure. of fuel per hr. For example: A naturally aspirated 500 horsepower engine has a BSFC of about 0.5. Flow rate is the amount of fuel a pump can supply over time. We sent 22 of the most popular in-tank fuel pumps to be flow tested at an independant testing facilty so we can see which pumps flow more than others at various pressures and voltages, and then we made the results public to everyone. In the following example of a curve chart, flow is shown by the green and blue lines. Buy DW400. It’s a good idea to check voltage at the pump to verify this. by 1.6. The key here is to figure flow at voltage if an alternator is used or not. BG recommends a -12 (31/44-inch) line for the BG-400 and even sent us a photo of a cavitated pump as proof that bigger is better. Sales and Tech Support: 913-647-7300 This factor is often overlooked and can make or brake pump performance, especially at high pressures. Top 10 Best Aftermarket Fuel Pump Brand Reviews 01. To get gph divide lbs./hr. To calculate Fuel Consumption for a 400 hp Gas engine with a BSFC of .50 lbs/hp/hr: 400 hp x .50 = 200 lbs/hr . As pressure goes up, flow rate goes down. If you are on a personal connection, like at home, you can run an anti-virus scan on your device to make sure it is not infected with malware. To get lph divide lbs./hr. Your browser either does not have JavaScript enabled or does not appear to support enough features of JavaScript to be used well on this site. This pump has a free flow rate of 78 gph. What is not shown (and rarely published) is the devastating impact this has on less efficient, traditional pumping mechanisms used by much of the competition. Cloudflare Ray ID: 5eca3805abe719a8 by 6. Please consult this information or call our tech line for assistance. ÷ 1.6 = 156.25 lph You need the minimum flow rate at your fuel system’s ope… Topscope is one of the finest brands with a long list of products in handling high-quality electric fuel pumps. To get gph divide lbs./hr. Tech Support Email: Different engine combinations, power adders, even fuel octane ratings and tuning approaches will have a profound impact on BSFC. • The green and blue lines show how voltage affects flow rate. This will give you fuel usage in lbs./hr. Voltage to an electric motor is like fuel pressure to an injector, more pressure in equals more volume out. 500 X 0.5 = 250 lbs./hr. Topscope high flow fuel pump. Measuring a high efficiency Aeromotive pump such as the A-1000, from 9psi to over 90psi, flow volume is reduced a total of 53%. Flow rate increases with voltage and amp draw increases with pressure. A liter of fuel weighs about 1.6 lbs. Performance & security by Cloudflare, Please complete the security check to access. Your IP: Never seen one go two years. Consider this carefully when choosing a fuel pump. You may need to download version 2.0 now from the Chrome Web Store. It would use 250 lbs. by 6. The BG 400-2 Pro pump delivers a consistent 400+ gal/hr flow with less than 14.5 amp draw at 18 psi. For example: A naturally aspirated 500 horsepower engine has a BSFC of about 0.5. It would use 250 lbs. Bad luck with Holley HP 500 17 to 20 amps to get her going kills relays ans fuse. Check it out The chart above shows a couple important things about an electric fuel pump. You need the minimum flow rate at your fuel system’s operating pressure. For Carburetors, this is between 4-7.5 psi. This pump is being used by many of the top NHRA and IHRA Pro Stock competitors. A fuel system with a Return Style Regulator or a Non-Return Style Regulator can use a bigger fuel pump than you actually need with no problem. Have had great luck with Aerospace 400 great price and great pump. Completing the CAPTCHA proves you are a human and gives you temporary access to the web property. To illustrate this, the A-1000 Aeromotive fuel pump at 80psi will see a 40% increase in volume when voltage is increased from 12v to 13.5v. The best way to find the flow rate at a given pressure is to check a fuel pump’s curve chart. Please note, in the case of Aeromotive’ published pump/HP ratings, compensating for low fuel octane or small injectors with unusual system pressure cannot be anticipated and a larger fuel pump may be required. Fuel pumps are usually advertised by their free flow rate. Mallery pumps last and work good. The theory is that since electric pumps are designed to … If you are at an office or shared network, you can ask the network administrator to run a scan across the network looking for misconfigured or infected devices. ÷ 6 = 41.67 gph A liter of fuel weighs about 1.6 lbs. A gallon of fuel weighs 6 lbs. A gallon of fuel weighs 6 lbs. Minimum flow rate needs can be calculated by multiplying peak horsepower by BSFC. What type of electric fuel pump should I use? As with all DW products, the pump is warrantied for 3-yrs to the original purchaser. by 1.6 250 lbs./hr. To convert this lbs/hr to a more meaningful gallons per hour we use t he conversion rate from lbs to … This is the flow rate with no pressure. 250 lbs./hr. The pump ships with a universal fitment kit which includes fuel hose, clamps, electrical harness, and filter. 616 HP @ .6 BSFC.

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