Fuel Rail
The Fuel Rail is a two-piece assembly that houses the fuel injectors. The fuel rail should not be confused with the Upper Fuel Gallery (sometimes called the Upper Fuel Rail).
Function
The Fuel Rail mounts to the lower intake manifold and provides means for pressurized fuel to enter the fuel injectors, where it is released into the lower intake manifold (which takes it into the respective cylinder). It is mounted to the lower intake manifold by plastic grommets, and the injector seats are sealed against the lower intake manifold by rubber insulators. The two halves of the fuel rail are conjoined by a small piece of fuel hose.
Versions
There are essentially two versions, Phase I and Phase II, which exactly follow the revisions (1 and 2 phases) used by the fuel injectors.
| |
Non-Turbo |
NA (Convertible) |
Twin Turbo |
| Phase I |
1990-1992 |
1993 |
1990-1994 |
| Phase II |
1993-1996 |
1994-1996 |
1995-1996 |
Aftermarket Fuel Rails
There are a few different aftermarket fuel rails available for the Z32, allowing installation of different fuel injectors. The most notable are the following:
- 300Degree Fuel Rail which can be ordered to suit various engine configurations (such as installing P2 injectors in a P1 engine).
- BDE Fuel Rails for installing top-feed fuel injectors in a VG30DE/TT.
- DrivenAuthority/WINFactory Fuel Rails are another method of installing top-feed fuel rails in the VG30DE/TT.
