Fuel Rail Loop Adapter Kit
3.5-liter 6G74 DOHC & SOHC Montero/Debonair Engine
Stock Fuel Rails OR 3SX Fuel Rails
This kit converts the fuel rail ends to AN standard fittings and includes a loop which dramatically improves fuel flow from the front rail around to the rear rail. The stock connector in is very small and restrictive and under high boost and rev circumstances the back rail (esp #4 and #6 injectors/cylinders) can get starved for fuel. This kit alleviates that bottleneck by using a larger diameter connector pipe to flow more fuel. Mounts to the stock fuel rails. The loop is 3/8-inch with .035" (.88mm) wall thickness.
3.5-liter 6G74 Version
We have custom made our kit now to properly fit the 3.5-liter 6G74 engine some are using for conversions in the 3000GT/Stealth. The rails are further apart so a different loop is needed. The rails themselves are interchangeable between the 6G72 and 6G74 motors.
We offer it as a kit with the adapter fittings to be used on stock fuel rails, or you can opt for JUST the loop to match the 3SX fuel rails if you are running those.
Kit includes the fuel two rail fittings to adapt the end of the stock fuel rails, the loop, and mounting bolts.
The 3SX kit does NOT require modifications to your timing covers. It fit with the stock timing belt covers in place. Why butcher those parts if you don't have to!
NOTE: We have been told by 3SX customers in Australia that this DOES fit both the 6G74 DOHC and SOHC engines.
Following are pictures of the 3SX loop installed on both the 6G74 DOHC (upper picture) and 6G74 SOHC (lower picture) engines.
Note also that the 3SX Clear Timing Belt Covers also fit the DOHC 6G74 but with a gap between them
Thanks to 3SX customer Paul in Australia for sharing these pictures!