{"product_id":"radium-saddle-tank-fuel-cell-conversion-kit-universal-20-0664","title":"Radium Saddle Tank Fuel Cell Conversion Kit | Universal (20-0664)","description":"\u003cp\u003e\u003cstrong\u003eTwo fuel cells, one fuel system, and the weight put exactly where you want it.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eRadium Engineering saddle tank fuel cell conversion kit\u003c\/strong\u003e is a fuel transfer system that lets two motorsports fuel cells work together in one vehicle, optimising carrying capacity and weight distribution. The cells can be positioned strategically for balance and a low centre of gravity, and \u003cstrong\u003ethey do not have to be the same capacity\u003c\/strong\u003e, though their top flanges should sit at the same height. Fittings and hoses are included for mounting the units either transversely or longitudinally.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMore total fuel aboard without one enormous cell dictating the layout\u003c\/li\u003e\n\u003cli\u003eWeight placed for balance and a low centre of gravity\u003c\/li\u003e\n\u003cli\u003eMixed cell capacities allowed, so the second cell fits the space available\u003c\/li\u003e\n\u003cli\u003eTransverse or longitudinal mounting, with hardware for both in the box\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFuel transfer system linking a passive cell to an FCST-X equipped active cell\u003c\/li\u003e\n\u003cli\u003e1.5in OD stainless steel TEE for fill plumbing, orientable vertically or horizontally\u003c\/li\u003e\n\u003cli\u003eFittings and hoses for both transverse and longitudinal installations\u003c\/li\u003e\n\u003cli\u003eCompatible with standard and dry break refuelling systems\u003c\/li\u003e\n\u003cli\u003e1.5in ID tubing included, suiting any remote filler with a 1.5in OD barb\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eThis is a system build, not a bolt-on, so read the required components carefully.\u003c\/strong\u003e You need two Radium fuel cells, a Radium \u003cstrong\u003eFCST-X\u003c\/strong\u003e surge tank, a \u003cstrong\u003eminimum of three fuel pumps\u003c\/strong\u003e (two lift pumps and one surge tank pump), and a remote filler or refuelling kit. \u003cstrong\u003ePrevious non-X FCST models are not compatible\u003c\/strong\u003e, because they lack the lift pump access the FCST-X handle provides. When sourcing lift pumps, make sure they have \u003cstrong\u003ebuilt-in check valves\u003c\/strong\u003e in the outlets; pumps without them can back-feed and cause operational failures.\u003c\/p\u003e\n\u003cp\u003eOn plumbing, the rollover valve in the FCST-X is removed and its vent port becomes the overflow, passing air and fuel back to the passive side, with the rollover vent fitting relocated to the passive cell's vent port. Because of that, \u003cstrong\u003ethe active cell must fill just before the passive cell\u003c\/strong\u003e. The TEE's orientation decides which cell fills first, and it moves the filler to the opposite side of the system, so the choice follows your vehicle's filler location.\u003c\/p\u003e\n\u003cp\u003eControl logic deserves planning. \u003cstrong\u003eSome custom logic is required for the passive cell's lift pump\u003c\/strong\u003e: it needs a level sender resistance signal to know when the passive cell is empty so it can shut that pump down. The active cell's lift pump can be controlled with the 20-0461 fuel level switch, which turns it on whenever the surge tank level drops. Two Radium fuel level senders are suggested; wiring two 0-90 ohm senders in series creates a 0-180 ohm range, or wired to independent ECU inputs the passive sender can handle that pump control directly.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSaddle tank conversion hardware for the secondary fuel cell\u003c\/li\u003e\n\u003cli\u003e1.5in OD stainless steel TEE and 1.5in ID tubing\u003c\/li\u003e\n\u003cli\u003eFittings and hoses for transverse or longitudinal mounting\u003c\/li\u003e\n\u003cli\u003eVent fitting relocation hardware\u003c\/li\u003e\n\u003cli\u003eNOT included: fuel cells, FCST-X surge tank, fuel pumps, fuel level senders, fuel level switch (20-0461), and remote filler kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUniversal, for pairing two Radium RA-Series fuel cells where the active cell carries an FCST-X surge tank\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eImportant Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRequires an FCST-X; previous non-X FCST models are NOT compatible\u003c\/li\u003e\n\u003cli\u003eMinimum three fuel pumps required: two lift pumps and one surge tank pump\u003c\/li\u003e\n\u003cli\u003eLift pumps must have integrated check valves or they can back-feed\u003c\/li\u003e\n\u003cli\u003eCell top flanges should be mounted at the same height\u003c\/li\u003e\n\u003cli\u003eCustom control logic is required for the passive cell lift pump\u003c\/li\u003e\n\u003cli\u003eNot CARB legal; not for sale or street use in California and CARB states\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43703889461315,"sku":"20-0664","price":664.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/20-0664_1200px_wide.jpg?v=1787399269","url":"https:\/\/www.tunedbyshawn.com\/products\/radium-saddle-tank-fuel-cell-conversion-kit-universal-20-0664","provider":"Tuned by Shawn","version":"1.0","type":"link"}