![]() It is NOT a glorified trap door box with baffles. The FCST is designed to protect EFI vehicles that experience fuel starvation. 2. The Fuel Cell Surge Tank is a drop-in fuel pump system for Radium Engineerings popular fuel cells or any cell that uses the industry standard 6x10 24-bolt fill plate bolt pattern.Usually the tank is mounted in the engine compartment. Since 2010, external Radium Engineering fuel surge tanks have been an excellent way to eliminate fuel starvation that occurs in racing. Viton O-rings supplied with PTFE Intank Hose The surge tank stores a small amount of fuel for the high pressure pump to pick up if flow from the main tank is interrupted for any reason.Anodised in Black, providing Corrosion Resistance when used with E85.Dual Stainless Electrical Terminals with PTFE Seals, allowing the pumps to be staged.Can be configured with either a single or twin pumps.They are presented with a tough, high polished finish or polished black anodised coating, and all inlet and outlet AN fittings are precision machined and tested for leak-free installation.Īll Raceworks products come with a 2 year warranty. Raceworks Surge Tanks have been crafted to meet the most extreme street and track conditions, and are welded from 5052 aluminium. When reliable fuel delivery is your number one priority on the track and strip, a quality surge tank is your first line of defence against sustained lateral loads. 2.8L Capacity when used with a single pump, or 2.6L capacity when used with twin pumps. Anodised black, this alloy surge tank can be fitted with one or two pumps and has dual stainless electrical terminals allowing the pumps to be staged separately.Į85 ready with Teflon seals, Viton o-rings and Teflon in-tank hose. This surge tank runs dual in tank pumps for a neat, quiet installation. Such a system would be more "returnless" than the one you describe which still has all the same components as a "return(?)" fuel system, just re-arranged. Maybe yours should be called a "short-return" or a parallel system vs.Raceworks 2.8 litre twin pump surge tank. I am not familiar with the NC Miata fuel system, but I assume based on his description that the regulator is located inside the tank and therefore there is no return line and no associated penetration in the tank to send bypass fuel to if the regulator was moved outside the tank. I don't know if there is any standard definition of what a "returnless" system is. I think all the systems in the scope of this discussion use bypass style regulators to set the fuel pressure, and of course that regulator can be located anywhere after the pump it just changes how the bypassed fuel is routed. I use a vent off the top of the surge tank to a vent back into the cell. I have the overflow from my surge tank going back to the fuel cell, keeps the surge tank topped up. On my system, "returnless" refers to the fuel rail, not the surge tank plumbing. It's a lot of money for just a tiny bit of fuel but I think the key is that we can really use all the fuel instead of guessing and it should reduce the risk of runnnng out of fuel. Connect the surge tank overflow to the fill tube (cut and add a T connection, avoids drilling in the tank)ĭo you think the above would be safe? The surge tank would sit in the trunk, we already have isolated the trunk from the cockpit (since the filler tube is there). Connect the surge tank "out" to the engine and fuel rail The general ports are for the following: feed from main fuel tanks 'lift' pump, return fuel back to main fuel tank, and fuel returning from the fuel pressure regulator. ![]() There are 4 ports 3 general -16 (-❨AN ORB) threaded ports and 1 fuel pump pickup port. of 6 Model Number 60701 Fuel Surge Tank System Operating and Installation Instructions. PLUMBING It is recommended that fuel entering the surge tank is filtered. Leave the OEM tank alone and just cut the rubber hose from the tank and feed it into the surge tank Fuel Surge Tank System (4) -908 O-rings 11001 1, No Rev. Connect a fuel pressure switch with warning light between the OEM tank and the surgetank. When the light is on you have about 0.5 gal (finish the lap and pit or cruise in 5th). Use a Radium FST-R (integrated pump and regulator, $500) This is the plan, our MC MIata has return less with the OEM pump and regulator in the tank: It sucks because any chance of doing well is gone (took me well over 10min at COTA to finish the lap.) We have very little slosh or starvation, no puking fuel, no fuel smell, etc.Ī few times we have ran out of fuel and limped back. We need some more fuel but moving to a fuel cell is too much for us right now, and stock fuel system works very well and is safe.
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