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R34 Rb25det Neo & Hks Fuel Rail

HKS_R34

By HKS_R34,
in Engines & Forced Induction

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HKS_R34 Proficient

HKS_R34

Posted
Posted (edited)

Just a quick question, is it possible to fit injectors for an r33 rb25det/rb26dett into my neo using the hks fuel rail? or must I use injectors that only suit my rb25 neo engine?

As the sponsor i bought the HKS fuel rail from, said that i can use topfeed injectors from a GTR 33 into my r34 rb25det NEO. Other people i have asked said that it is not possible, however this sponsor is pretty reputable so i am stumped.

Edited by HKS_R34
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https://www.sau.com.au/forums/topic/251544-r34-rb25det-neo-hks-fuel-rail/
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Mr. Untouchable Experienced

Mr. Untouchable

Posted
Posted

Hi dude,

R33 RB25DET injectors and RB26DETT are not the same, the RB25"s are SIDE FEED 370cc items and the RB26 Injectors are TOP FEED 444cc

if you get a hks rail you may be able to use the RB26 items but not the RB25's.

hope this helps

666DAN Grand Master

666DAN

Posted
Posted

I thought it was possible to use GTR top feeds with the NEO as long as you did have and aftermarket rail and some spacers...the injector length differs that's for sure, can't remember how the o-rings measured up in comparison.

I used to talk to a guy in Greece that was running 440 GTR injectors in his Neo and he claimed it was just a matter of changing the fuel rail. Personally I wouldn't bother with all the hassle and just run aftermarket NEO injectors, I doubt you'll see the limits of the factory rail.

HKS_R34 Proficient

HKS_R34

Posted
  • Author
Posted

okay thanks guys, well the problem is that i had already bought the rail, as the sponsor had told me i was able to fit any aftermarket gtr injectors with them.

As I already have gtr injectors spare and i thought that it would be much easier to do and less costly.

Anyone out there can confirm??

Cjmartz2k Proficient

Cjmartz2k

Posted
Posted
Hi dude,

R33 RB25DET injectors and RB26DETT are not the same, the RB25"s are SIDE FEED 370cc items and the RB26 Injectors are TOP FEED 444cc

if you get a hks rail you may be able to use the RB26 items but not the RB25's.

hope this helps

Neo's have top feed injectors, unlike regular 25's.

HKS_R34 Proficient

HKS_R34

Posted
  • Author
Posted (edited)
i think VPW in vic have injectors to suit that combo, siemens brands from memory.

do you have a website for that company.. or is it the motorbike company? the injectors to suit Harley Davidson?

Edited by HKS_R34
  • 6 months later...
  • 1 year later...
Simon-S14 Grand Master

Simon-S14

Posted
Posted

injectors for a neo is easy as piss and wont cost a fortune. no need to change rails either. Just get some siemens deka's in either 60 or 80lb in 3/4 length and then bolt them straight in. you can even use the full length ones also (more common and cheaper) but you need to space the fuel rail up by 12mm, again not hard.

I just bought a set of 80lb injectors for $380 delivered. flow matched also.

R32 Driver Mentor

R32 Driver

Posted
Posted

You can use aftermarket neo injectors with the rb26 fuel rail with some spacers made to the correct length

Since rb26 injectors and neo injectors are both top feed

are they the same impendance?

  • 4 months later...
Rolls Grand Master

Rolls

Posted
Posted

Since rb26 injectors and neo injectors are both top feed

are they the same impendance?

Being as they are both top feed does that mean they interchangeable, eg can I use GTR injectors in a RB25DET NEO fuel rail?

Obviously I would need the resistor pack to suit.

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