This regulator is in no way compatible with a stock Subaru fuel system. Note that this regulator is intended to be used with a full aftermarket fuel system using AN fittings and lines. Furthermore, with the addition of interchangeable return orifices, the MPR can be used in ANY horsepower output EFI system imagineable and is compatible with all gasoline and ethanol blends of fuel. The 1:1 vacuum reference high flow design has been tested to regulate over 1,400 liters per hour (see MORE DETAILS tab). Alternatively, wall mounting can be accomplished by not using the included mounting bracket and simply mounting using the holes that pass through the body.įuel pressure is dialed in using the preload set screw on top. This universal Radium Fuel Pressure Regulator (FPR) is built around the common OEM Bosch regulator tops found in many Audi/VW (and other) applications. Replaces the factory regulator and re-routes fuel to cycle through the engines rails before reaching the regulator and returning to the tank Offers adjustment. Furthermore, the MPR is the only regulator on the market that can be floor mounted. The lower two opposing return ports are unique in that they flow parallel with the pressure ports eliminating the need for elbow fittings. Because of this flexibility, it is also perfect for Radium fuel surge tanks by eliminating the need for an extra "Y" fitting. The MPR can be plumbed many different ways to suit most any installation traditional flow-through or dead-end systems. To reuse the factory fuel pressure regulator, select part number 20-0303 (shown below). Its unique port configuration make it ideal for combining multiple fuel pumps into a single feed line or vice versa. The Radium fuel rail converts the OEM side feed fuel injector setup to top feed injectors. If a significantly higher flowing pump is used, the minimum pressure ratings may be higher than what is advertised.The Radium Multi Pump Regulator (MPR) is manufactured in the USA and is the ultimate solution for simple or complex high-flow fuel systems. Radium Engineering Fuel Pressure Regulator (Body Only). Radium FPRs are tested using a common high flowing Walbro 255lph pump. Radium Engineering Fuel Pressure Regulator (Body Only) from Tuned By Shawn. NOTE: The exact min, static, and max pressures are influenced by the flow rate of the fuel pump being used. Radium provides 2 different GENUINE Bosch regulator tops: 3.0 Bar (43.5 psi) static and 4.0 Bar (58.2 psi) static. This option includes everything needed with the except of the regulator top, as shown below. If one of these is required, select Radium 20-0014. Also, there are unique non adjustable Bosch variations that are available, such as 3.5 Bar. There are aftermarket adjustable regulator tops that will snap into the Radium billet housing. There is also a 1/8NPT female port for a gauge or pressure transducer.Įach regulator body is laser etched and anodized for a superior finish. The main ports are -6AN O-Ring (9/16-18 female thread) and will accept a variety of adapter fittings. This reduces the number of fittings required and eliminates a possible leak point. The compact housing is equipped with an integrated machined -6AN flare fitting for the return port on the bottom. Or if the vacuum reference is removed a constant static fuel pressure can be achieved. Next, strip the insulation back on all wires 3/16' (5mm) from the fuel pump manufacturer and Radium Engineering internal connectors. Country Garden Holdings Co. As intake manifold pressure changes, the fuel pressure changes at the same rate. If the engine is equipped with a fuel pressure regulator on the fuel rail, this diagram illustrated below can be used. The Bosch regulator tops are vacuum referenced with a 1:1 ratio. The regulator body is held in the housing with a stainless steel snap ring and it can easily be removed for cleaning or replacement using a pair of snap-ring pliers. The extremely compact billet aluminum housing provides a convenient package for plumbing and mounting. These Bosch regulator units are the same found on millions of OEM vehicles from Audi and VW to Ford so the build quality is extremely high. The universal Radium Fuel Pressure Regulator (FPR) is built around an OEM Bosch regulator top. The Radium Fuel Delivery System is E85 safe. Mounted on the fuel rail is the Radium Direct Mount Regulator (DMR) and a Radium FPD-R fuel pulse damper. Power Steering / A/C Heater Hose Relocation The fuel pressure regulator return uses a short -6AN prefabricated PTFE hose and adapter fittings (return kit) to connect to the factory fuel feed line, using it as the return line.
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