{"product_id":"radium-engineering-top-feed-fuel-rail-conversion-nissan-ka24de-20-0457","title":"Radium Engineering Top Feed Fuel Rail Conversion | Nissan KA24DE (20-0957)","description":"\u003cp\u003e\u003cstrong\u003eThe KA24DE's side feed injectors are the wall between a turbo 240SX and the injectors it actually needs.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSide feed injector selection stalled a decade ago while top feed development never stopped, and every big-power KA hits that shelf. The \u003cstrong\u003eRadium Engineering Top Feed Fuel Rail Conversion for the Nissan KA24DE\u003c\/strong\u003e knocks the wall down: a direct bolt-on for all twin cam KA24DE engines, CNC machined from solid 6061 aluminum, black anodized, with a large 0.69\" internal bore supporting all necessary power levels. The rail converts the OEM side feed setup to top feed, opening the entire modern 14mm O-ring injector catalog, with two spacer sets in the kit supporting both 48mm and 34mm injector heights. Three 8AN ORB ports (ends and bottom) plus a 1\/8\" NPT top port handle plumbing and instrumentation. All fuels including E85.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThe full modern injector catalog unlocked, from mild upgrades to 2600cc flow\u003c\/li\u003e\n\u003cli\u003eRail volume that never becomes the restriction, with the 0.69\" bore feeding all four cylinders evenly\u003c\/li\u003e\n\u003cli\u003eFueling stability under high pressure where the restrictive OEM rail falls behind\u003c\/li\u003e\n\u003cli\u003eCooler rail temperatures via phenolic spacers resisting heat transfer from the head\u003c\/li\u003e\n\u003cli\u003ePorts for the regulator, damper, gauge, or sender the build calls for\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDirect bolt-on for all twin cam Nissan KA24DE engines; converts side feed to top feed injection\u003c\/li\u003e\n\u003cli\u003e0.69\" internal bore, CNC machined solid 6061 aluminum, black anodized\u003c\/li\u003e\n\u003cli\u003eAccepts high flow injectors with 14mm O-rings top and bottom (injectors MUST have 14mm O-rings; not included)\u003c\/li\u003e\n\u003cli\u003eTwo phenolic spacer sets included, fitting 48mm (tall spacers, long bolts) or 34mm (short spacers) injector heights\u003c\/li\u003e\n\u003cli\u003e4x Radium 30mm injector seats (20-0160) included\u003c\/li\u003e\n\u003cli\u003e3x 8AN ORB ports (both ends and bottom) plus 1x 1\/8\" NPT top port; all fuels including E85\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eInjector fitment is fully documented, which is rare and valuable in conversion rails. With the tall spacers and longer bolts, verified direct fitments include the Injector Dynamics ID1050, ID1300, ID1700, and ID2600 in XDS-48-14-14 configuration, and the short spacer set covers 34mm-body injectors with the same 14mm O-ring requirement. The phenolic spacers do double duty, setting injector height while thermally isolating the rail from the head. One manifold note from Radium: on an Xcessive intake manifold, the rail may need shimming to proper height depending on injectors, and the included aluminum injector seats go unused. Plumbing runs through the 8AN ORB ports with Radium adapter fittings, and the NPT port takes a gauge or sender with PTFE paste. Injectors and fittings sold separately.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x Black anodized aluminum top feed fuel rail\u003c\/li\u003e\n\u003cli\u003e2x Phenolic mounting bolt spacers short, 2x tall, 2x phenolic washers\u003c\/li\u003e\n\u003cli\u003e4x Radium 20-0160 30mm injector seats\u003c\/li\u003e\n\u003cli\u003e2x Stainless mounting bolts short, 2x tall\u003c\/li\u003e\n\u003cli\u003eInjectors and adapter fittings NOT included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAll twin cam Nissan KA24DE engines: 1991-1998 240SX S13\/S14 and KA swaps\u003c\/li\u003e\n\u003cli\u003eInjectors with 14mm upper and lower O-rings, 48mm or 34mm heights (ID1050\/1300\/1700\/2600-XDS-48-14-14 verified with tall spacers)\u003c\/li\u003e\n\u003cli\u003eXcessive manifolds: may require shimming; included seats unused\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672695275587,"sku":"20-0957","price":208.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-rad-20-0457-13693874241606_e58f67ba-a681-4247-be10-848f230deece.jpg?v=1786717139","url":"https:\/\/www.tunedbyshawn.com\/products\/radium-engineering-top-feed-fuel-rail-conversion-nissan-ka24de-20-0457","provider":"Tuned by Shawn","version":"1.0","type":"link"}