Top Feed Fuel Rail To Suit Standard Plenum

[Torques]

Good stuff,

Can you post pictures of your fuel line routing and the location of the FPR?

?

So I stop considering and got shit done yo!!!!

With 750cc "Xspurt" stubby (40mm) injectors ,it fits like a glove

And they told me it couldnt be done.....

[ARTZ]

this is about the best pic i have, this was just a test fitting

the reg just squeezed in there, you can see the return line goes straight back to the dampner and the feed hose goes around back of the manifold pretty simple..will have a gauge in this line somewhere too..was at EFI Hardware today he also does a kit to fit 55mm injectors in there...very tight squeeze but a nice kit..

[Torques]

Nice,

Thank you ... I was thinking about mounting the FPR directly to the rail as you did.

Was not too sure if that solution would be mechanically sound??

Alas that would save you one additional fuel hose. (FPR to RAIL)

Space is tight there, have to see if my FPR does fit.

Thanks!

Edited January 30, 2012 by Torques

[kitto]

Does anyone know if the R33 RB25 fuel rail will fit the NEO? Retaining the factory plenum of course.

I'm going to put Xspurt injectors in my NEO and i need to either modify the stock rail and put -8 fittings on it, or just buy a rail off the shelf.

I'd prefer to just buy one off the shelf.

[ARTZ]

yeah its tight alright...

yeah kitto rails are identical..go back a page there is one for 99$..

[GTScotT]

I like what youve done there mate very good work!

with the bung go to a bolt shop and get an allen key grub screw for it, use some fuel resistant plumbers tape and your laughing!

[kitto]

So if i can use an R33 RB25 rail on an RB25 NEO, does it also suit an RB26?

Another question, do i have to use 3/4 length injectors or can i get away with full length injectors with the NEO?

I assume the fuel rails come with fitting kits to suit either injectors?

Any reason to go with 14mm injectors over 11mm ones and vice versa?

[ARTZ]

ferk me well i been to a couple of bolt shops and a speed shop and nobody has the right size bolt/grub screw i neeed..from what I can tell its a 9/16 UNF..

I do have a fitting for it thats too long, so looks like I will have to tap a thread through the fitting put a grub screw through the fitting then grind it off flat..should work ok..

[scotty nm35]

Want me to weld it up? Lol.

Can't Aznew help you out?

[ARTZ]

yeah I was thinking of welding it too ....waiting for Glenn to get back to me..

Speed parts said they could get it but might take a few days..Apparently im not the first with this problem.....lol

[34GeeTeeTee]

So if i can use an R33 RB25 rail on an RB25 NEO, does it also suit an RB26?

Another question, do i have to use 3/4 length injectors or can i get away with full length injectors with the NEO?

I assume the fuel rails come with fitting kits to suit either injectors?

Any reason to go with 14mm injectors over 11mm ones and vice versa?

I run an RB26 HKS rail on my car, i recently purchased ANOTHER HKS rail as some idiots lost the HKS badge off mine after it had been powdercoated so long story short i purchased another HKS rail to steal the badge off it, the new one i purchased is to suit ER34 NEO and R34GTR, it looks almost identical to the one i have fitted so no idea what the difference is... It suits 11mm injectors to my knowledge. Mine fit as it was a forward facing plenum, the other HKS rail will be for sale if you need one.....

[Torques]

I forgot to post this picture of the supplied (with the rail) EV14

Edited February 2, 2012 by Torques

[R32SOM]

Bursons or supercheap have the grub screw your after

[ARTZ]

Turns out 'InjectorsOnline' had it after all.

I just had to be patient and wait for him to get back to me, Something I am not real good at

Oh yeah heres a pic of my XSpurts Torques, bit different to yours hey..how many cc are yours??

Look how cute they are , believe it or not they're also available in 2000cc in this size..

[Torques]

About 540CC ..

They're Bosch EV14 (and almost double the length of your injectors)

http://www.bosch-motorsport.de/content/language2/html/2659.htm

But the ones I bought have Ford Motorsport (USA) (Mustang GT500) part-numbers.

http://www.lethalperformance.com/07-09-shelby-gt500-fuel-delivery-fuel-injectors-c-2052_2271_2274/bosch-72lb-ev14-high-impedance-fuel-injectors-set-of-8-p-17814

I just had to be patient and wait for him to get back to me, Something I am not real good at

Oh yeah heres a pic of my XSpurts Torques, bit different to yours hey..how many cc are yours??

[ARTZ]

are they 55mm??

with the 40mm it fits sooo easily, with 55mm I think you need modded shorter spacers and it is still a rel tight fit

anything bigger and your dreamin..

[discopotato03]

According to this site they now do a 900cc Xspurt injector in that short length .

http://www.msel.co.nz/Fuel-Delivery/Fuel-Injectors/Xspurt-Fuel-Injectors

Cheers Adrian .

[scotty nm35]

I think they can modify the pintle tip for any size. Just go the 2000's Disco, better resale value.

That said, the smaller the size the cheaper for some stupid reason.

[discopotato03]

I went to IDs site to see what their range is and came up with two possibilities . It seems that Gen IV Chevs run this style of shorty injector I think in LS3 LS7 and some later truck versions . Injector Dynamic do one in this size called ID 850-GM so if you want the claimed to be blueprinted version with a 14mm top ID can supply .

The other possibility is the ID 725-48-11 which means 725cc 48mm long 11mm OD top section .

Scott at Insight says he has not used the shorty Xspurts but the 48mm long ones work well and virtually same as the IDs .

I have looked at pics of R34GTt rails and I think their supply and reg tubes would be a nightmare to fit under an R33 plenum , Nissan didnt plant their R34 reg on top of the front of the rail like they did with 33s . To have any hope of using an OE rail it would have to be from an RB20 or 26 , which means 11mm top O ring injectors and the shortest EV14s I think are 48mm long .

For the record has anyone successfully used an RB20 or 26 rail on an R33 RB25 std manifold and is there much difference in their mounting points .

I think I have an R33 RB26 rail here burried somewhere .

I know an aftermarket rail is easiest but it would be nice to have the fuel lines and reg about where they should be and looking standardish .

A .

[scotty nm35]

I modified my stock VQ rails, tigging 6an fittings to the end of them, but I am fairly sure Proflow do a nissan reg adapter fitting if you want to run a hose off the rail where the reg was. Perhaps just relocate the stock reg if you don't want adjustability? I went aftermarket with an SX reg, no issues in 3 years on ethanol.

If you are looking for stealth, the side feeds may be the best option.