![]() ![]() For best results, the damper should be mounted directly onto the fuel rail(s). The FPDs can be mounted at any possible angle including upside down. The 8AN ORB (3/4"-16 UNF threads) version seals using a Viton O-ring while the 3/8" NPT variation seals with the tapered pipe threads. The anodized aluminum housing features two selectable threaded male fittings. Vacuum/boost reference line must be hooked up to the FPD. The FPD-R cannot be used in this scenario. Notes: Even though fuel pressure is 92.5psi at full boost, the FPD-XR will work in this example because the base static pressure was set within the requirements. No vacuum/boost reference hooked to FPD, port left open. Notes: The FPD-XR will work in this example because the base static pressure was set within the requirements. Notes: Even though fuel pressure is 63.5psi at full boost, either FPD-R or FPD-XR can work in this example because the base static pressure was set within the requirements. Any dynamic fuel pressure created by a rising-rate FPR outside of this range is acceptable, but only when the base "static" fuel pressure is set within these ranges and the vacuum/boost reference line is hooked up. IMPORTANT: The ranges above are base static fuel pressures only. The FPD-R (green top) is slightly shorter than the FPD-XR (black top) allowing it to be used in space-contrained applications.įurthermore, the FPD-R (Fuel Pulse Damper-Range) and FPD-XR (Fuel Pulse Damper-Extra Range) both have unique base "static" fuel pressure requirements.įPD-R base pressure requirement = 40 - 70psi (static)įPD-XR base pressure requirement = 40 - 120psi (static) What is the difference between FPD-R and FPD-XR? This becomes essential for boosted systems that use a 1:1 rising rate fuel pressure regulator. Furthermore, a fuel pulse damper can help solve erratic lean air/fuel ratio spikes, commonly experienced as "stumbling", that are difficult to tune out.Īlong with having the flexibilty of using common fittings, Radium Engineering FPD's use a vacuum/boost reference port which allows for proper fuel pulse damper performance even at elevated fuel pressures. This correction can be measured throughout the RPM range and can often help idle surge, especially with high flow injectors. The FPD's internal diaphragm will absorb oscillating pulses and stabilize fuel pressure. In order to achieve a safe and consistent rail pressure, a fuel pulse damper (FPD) is often necessary. This permits an full OEM replacement with nothing else required.The opening and closing of fuel injectors creates pressure pulses in the fuel rail which can lead to unstable fuel pressure. No fittings are included as shown below.Ģ0-0012-PK Fuel Rail Plumbing, Toyota 2ZZ-GEĪs shown below, this kit includes the fuel rail plumbing components found in 20-0012-00. The OEM fuel pulse damper bracket and associated screws are included as well. This option includes the fuel rail and mounting hardware. Supercharged Lotus intercooler boss remains functional Easily converted to a pressure regulated return system Works with factory and aftermarket injectors ![]() Stealth laser etched logos pre anodizing Anodized surface finish for corrosion resistance The fuel rail was designed to clear the intercooler mounting boss (Exige-S/2-Eleven only) as best as possible without sacrificing fuel flow. This helps alleviate all high frequency pressure fluctuations. The center port accommodates the 2ZZ-GE fuel pulse damper (not included) from the OEM fuel rail. These ports use positive o-ring seals instead of tapered pipe threads which commonly damage aluminum threads and lead to fuel leaks. Both ends of the rail are tapped to 8AN ORB female threads. This high volume fuel rail works on all 2ZZ-GE engines. To verify clearance, the dimensional drawings on the product pages can be used as a reference guide. Ample space around the fuel rail port(s) is necessary for larger accessories such as fuel pressure regulators, fuel pressure gauges, and fuel pulse dampers. A center port for the factory fuel pulse damper is also included.ĨAN ORB Adapter Fittings can be found HERE.ĨAN ORB Direct Mount Regulators can be found HERE.įuel Pressure Gauge Adapters can be found HERE.Īppropriate fittings must be selected based on the specific application. The end ports of this fuel rail are tapped for 8AN ORB. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |