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R34 Gtt Injector Question, Query After Install.

msports180

By msports180,
in Engines & Forced Induction

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msports180 Mentor

msports180

Posted
Posted

Ive just chucked some injectors in my R34 Gtt, these one's: http://www.ebay.com.au/itm/Nissan-skyline-NEO-r34-Stegea-350z-370z-infinity-g35-bosch-750cc-Fuel-injectors-/180959307948?pt=Motors_Car_Truck_Parts_Accessories&hash=item2a2203e8ac

Now my question is, they seem to have a lot of movement? Like i can twist them now their installed? Is this because they are to small? I measured them as best as i could and the length and diameter seemed right? Or do most new injectors have a little movement? No up and down or side to side, just i can twist them. They were tight into the rail and head.

Just a little concerned before i pressure the system up and spray fuel everywhere.

Cheer's.

34GeeTeeTee Grand Master

34GeeTeeTee

Posted
Posted

I d the same issue and when JEM pumped fuel up to it they leaked, they ended up changing the O rings to the correct size... (the workshop that fit mine were retards)

JustinP Mentor

JustinP

Posted
Posted

I installed some Deatschwerks injectors into my GTT recently, they were very tight with the supplied o-rings. Sounds like you might have an issue.

Ive just chucked some injectors in my R34 Gtt, these one's: http://www.ebay.com....=item2a2203e8ac

Now my question is, they seem to have a lot of movement? Like i can twist them now their installed? Is this because they are to small? I measured them as best as i could and the length and diameter seemed right? Or do most new injectors have a little movement? No up and down or side to side, just i can twist them. They were tight into the rail and head.

Just a little concerned before i pressure the system up and spray fuel everywhere.

Cheer's.

JustinP Mentor

JustinP

Posted
Posted

Sorry I just read you original post properly - I could twist mine with a bit of force (they were tight in all other dimensions of movement though).

Maybe you will be ok :) Did you use lots of grease or oil when installing them into the head?

Oh wicked. That means it has to all come apart again :verymad:

msports180 Mentor

msports180

Posted
  • Author
Posted

Yeah i used some rubber grease i was recommended. Ive got a few other jobs half way through before i feel comfortable priming the fuel system, will try and knock them off and try it with a extinguisher handy. Wouldnt be so bad if the stock manifold wasnt such a carnt to get off and i never tried em till i'd put it back on :( FML.

Hanaldo Grand Master

Hanaldo

Posted
Posted

Just to clarify, you actually do want a bit of movement in there. They shouldn't be solid. You should be able to rotate them with your thumb and forefinger, but they should feel firm, not loose. If you tighten them up more than that then you may pinch/warp the seals.

msports180 Mentor

msports180

Posted
  • Author
Posted (edited)

Thanks for the input guys. They are firm, dont just free-wheel if you know what i mean. The other issue is i cannot re-use the injector retaining clips due to the spacer design.

Aaaah its been to long in between playing with cars ive forgotten everything! Damn kids!

Edited by msports180
Hanaldo Grand Master

Hanaldo

Posted
Posted

Sounds like they are ok then mate. My old Power Enterprise injectors didn't use the retainer clips either and they were fine. So long as the rail is solid and the injectors are firm, you should be ok :thumbsup:

  • 4 weeks later...
msports180 Mentor

msports180

Posted
  • Author
Posted

So these never leaked when I primed them with the stock pump. Have since installed a Walbro and wired it with a proper 12v supply.

Finished everything on it today and went to start it and the extra pressure from the Walbro and they leaked.

Fook!

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