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R32 Gtr Injector Installation

Tangles

By Tangles,
in Engines & Forced Induction

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Tangles Grand Master

Tangles

Posted
Posted

heya,

got a quickie for ya's

Installed 6x 550cc Siemens injectors into my rb26dett

The injectors came with 2x orings up top and 1 grommet down bottom.

For installation, does 1 oring go inside the fuel rail when slipping in the injector, and the other oring sits outside? ie squeezed between fuel rail & injector?

creates an inner seal inside the fuel rail with oring

creates an outer seal between injectors and rail.

is this correct? or is only 1 oring used (inside the fuel rail)

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MrStabby Grand Master

MrStabby

Posted
Posted

I have the seimens 550s. Mine came with a large single o-ring at the top, a couple of which leaked after a short while. When i pulled them to check they had torn. Replaced all six with the factory o rings pushed down to the bottom of the mounting area, and they have been perfect since.

Tangles Grand Master

Tangles

Posted
  • Author
Posted

thank you.

I used a little bit of degreaser on the orings to help slide them in ok.

One oring at the top inside to create an internal seal, another lowered onto the injector body to create an external seal where the injector body meets to fuel rail

orings were the same size tho. no big deal. once tightened down with the 2 fuel rail bolts it seems ok.

Havent fired it up yet, working on fuel system atm

(surge tank, braided fuel line, external 305lph walbro, internal gtr pump, + just finishing off radiator upgrade & oil filter relocation kit)

awaiting a $15 gtr remap chip, then will try firing up the engine

thanks again for the advice

Swiper the Fox Grand Master

Swiper the Fox

Posted
Posted
quickie

with the injectors installed being 550cc, and dead stock ecu...

the car "shouldnt' start, right?

it may start but be very very rich. If it doesn't start it would have already fouled the plugs.

Duncan Grand Master

Duncan

Posted
Posted

careful with the grease used, it must tolerate petrol. pulled my fuel rail off the other day and the injectors were siezed in place, the grease had broken down.

next time just wd40 for me

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