How To Install A Supercharger On A Carburetor Engine Stalls' title='How To Install A Supercharger On A Carburetor Engine Stalls' />Honda Civic Why is My Car Shaking at Idle If the engine oil and coolant are at their correct levels. How to Install Supercharger Kit. Footage taken from Holley Carburetor Installation Tuning DVD. Supercharger Gaskets. Troubleshooting engine idles rough. Here is some money saving do it yourself procedures on rebuilding a 4 barrel carb with an Edelbrock carburetor rebuild kit. Carb Tunning In this information. If you are running a blow through carb setup, with a turbo or Supercharger. Shop the industrys largest selection of Carburetors at Jegs. Chrome Engine DressUp. Choosing the right carburetor for your application is. How To Build The Proper Fuel System For Carbureted Motors. Todays high performance engines are able to deliver horsepower numbers unheard of 1. With better flowing cylinder heads, ignition systems, and camshaft profiles, the potential for huge power is almost endless. Combine this with the strides in chassis development and you have a car that not only makes lots of power, but can get it to the ground with higher g forces. This month well take a hard look at selecting proper fuel pumps, filters, lines, and system components for a carbureted system and follow up it next month with similar principles for fuel injected appli cations. Now, whether your forte is drag racing or road racing, a good supply of fuel fed to your engine at the right pressure under all driving circumstances is critical to achieving the ultimate performance. Choose the Right Pump First. When choosing a pump, youll first need to determine how much power your engine is developing under full power at the flywheel and how much fuel will be required to support it. If you dont have actual dyno results, you can estimate your power. For most carbureted systems on street engines developing under 4. Get into higher horsepower numbers, or add nitrous or a supercharger to your engine, and youll need a properly installed, significantly stronger electric pump. Youll also need to know your engines fuel efficiency, commonly referred to as BSFC Brake Specific Fuel Consumption, the maximum fuel system pressure, and the pumps flow volume at that pressure. Lastly, on electric pumps youll need to know the available voltage at the pump under engine load and the pumps flow volume at that voltage. This is very critical wire a high dollar electric pump incorrectly, and the pumps performance will suffer and the engine could run lean. In the absence of actual dyno information, youll need to first determine how much horsepower will be produced and the amount of fuel required to support it by estimating engine horsepower on both the high side and low side of BSFC. Most gasoline engines use less than 1 pound of fuel to make 1 hp for 1 hour, so expect the BSFC number to be less than 1. Different performance combinations, power adders, and even fuel octane ratings and engine tuners will have a great impact on BSFC. In the world of electric fuel pumps, many are flow rated at zero pressure. Be careful here because your system works under pressure, and pressure will drastically affect how much fuel flow your pump delivers. When shopping for a fuel pump, be sure to look for fuel flow ratings at the pressure you need. To estimate your engines BSFC, use the following guidelines. Its important to note that the best method of establishing actual BSFC is through proper flywheel dyno testing. Naturally aspirated engines are generally most efficient with a BSFC between. Nitrous combinations typically use a little extra fuel and often develop a BSFC from. Forced induction engines are often least efficient, and BSFC ranges from. Using 5. 00 hp as an example, well show the fuel requirement for two engine efficiency combinations HP x BSFC pounds of gasoline5. BSFC 2. 50 pounds of gasoline. BSFC 3. 75 pounds of gasoline. Since a gallon of fuel weighs about 6. Fuel Pressure Volume. The relationship between fuel pressure and volume is inversely proportional. As fuel system pressure rises, the pumps volume decreases. In addition, the force of a car moving forward g forces and the friction the fuel encounters in the system thorough lines and fittings may also impede the delivery at the carburetor. In order to supply fuel in the most efficient way, youll want to use adequately sized lines typically 12 inch id and fittings without sharp bends. As a rule, a 9. 0 degree fitting is equal to adding several more feet of line into the system about 1. This means that its better to use two 4. When routing your fuel line, be sure to keep the line away from exhaust components and moving suspension parts, and never route a fuel line through the interior of your car. Remember that the fuel your engine needs has to be delivered past the fuel pressure regulator and the needles and seats, and the fuel delivery system competes against g force and friction in the system. Also, make sure your fuel pump is mounted where gravity will help draw fuel to the inlet. Ideally this is at the rear, lower side of the tank. If this isnt possible, at bare minimum youll have need to mount the pump near the tank, since electric fuel pumps are better pushers than pullers. Measure at the Fuel Pump Terminals. Simply having power connected to an electric pump and being able to turn it on does not guarantee the pump receives the correct amount of voltage. Wire size, wire unions, and a proper ground are all equal and critical elements of a properly operating fuel pump. Most electric fuel pumps are designed to operate at 1. DC. To illustrate this, testing has shown that an A 1. Aeromotive fuel pump at 8. A good fuel pump electrical system will use a 1. Equally important is a good ground system wired to the frame and onto the engine block. A secondary ground again, properly installed to the underbody is also a good idea. To check your fuel pumps voltage, use a multimeter, and with the engine and pump running, measure the voltage output at the alternator. Next measure the voltage at the pump. If you find more than a. If you do run across wiring issues, best to rewire the entire system. Think of the voltage to an electric motor as fuel pressure to an injector more pressure in equals greater volume out. Higher voltage at the fuel pump terminals increases motor torque, resulting in an increased rpm and flow volume for a given pressure. Again, you may have the best and most expensive fuel pump available on the market, but if it isnt properly wired and installed, itll reduce your fuel systems performance. Setting Fuel Pressure. Your systems fuel pressure should be generally set between 6 and 8 psi measured at the carburetor for a street engine higher for a race engine. Keep in mind that fuel pressure is not fuel volume. Your pressure reading is only an indication of the level of restriction in the system. Choose Position the Right Filters. Fuel filter type and placement are critical to achieving the proper fuel pressure and volume being delivered to the carburetor. A high flow, fine element fuel filter should be used between the fuel pump and carburetor on the pressure side, not between the tank and the pump on the suction side. Between the tank and the pump youll want to run a coarse filter screen no finer than 1. This is because as a pump pushes, it also has to pull, and when a pump has to pull too hard to acquire fuel through a restrictive filter, a vacuum or low pressure area develops at the inlet. Install Softwares Without Administrator Permission To Move. To be sure of the specs for your fuel filter, always check with the fuel pumps manufacturer for a recommendation. A more restrictive filter on the suction side of the pump may fail to flow the full volume of the pump, which can result in cavitation at the pump inlet. Heres an example of a complete fuel system from Aeromotive. Fitted to this 5. Chevy tank is a sump, and positioned on top of the tank are a relay kit, 1. Aeromotives proprietary sump is designed with two outlet fittings on the bottom with a return fitting, which can be see on the upper right. Inside the fuel sump you see the positioning of the internal baffling that captures the fuel from the return port. The sump is welded in the bottom of the tank at the rear center area. Only experienced welders familiar with working on fuel tanks should install fuel tank baffles, especially in used tanks. This new Holley electric pump PN 1. Gerotor design and has a flow rating of 1. A filters micron rating is based on the smallest particle it will trap. For example, a 1. A 1. 00 micron filter is considered a coarse filter. The top filter is a 1. The bottom filter is a 1.