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Rb26dett + Direct Port Nitrous Injection Setup

XRATED

By XRATED,
in Engines & Forced Induction

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XRATED Veteran

XRATED

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I'm embarking on a direct port approach to my nitrous injection. I have run 50 and 100hp sucessfully through a single fogger. However to ensure even distrobution at higher nitrous flow rates I need to go to a individual tb/direct port- 6 fogger injection set up.

I have a good Idea on the way I would like to go, however I havn't seen too many individual set ups on a 26 before.

It would be super helpfull if I had some photo's of other peoples set ups to compare too. Or any advice from those who have completed an install similar.

Please note: This is a street car 70% of it's life and I'm trying to not install 90 degree fogger straight into the runners.

Cheers

Justin

This is my current set up:

post-22624-1250525009_thumb.jpg

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STATUS Grand Master

STATUS

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we did one with the greddy inlet manifold and used the secondary injector holes as the fogger bosses and it worked great. Ive always wanted to use the nos injector nozzles but never had the chance. Most of our nos installs are on 2JZGE, VG30DE and RB25DE's ...

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XRATED Veteran

XRATED

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Thats probably where I'm going to end up. Straight shot foggers, threaded into the second injector boss in an after market intake plenum.

Was there any serious clearance issues with the plumbing around the fuel rail?

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Beer Baron Grand Master

Beer Baron

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I have seen pics of a nice looking direct port GTR set-up in here somewhere. I had a feeling it was actually in the for sale section but I did a search and couldn't find it in there. it must have been somewhere here in FI section.

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Swiper the Fox Grand Master

Swiper the Fox

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I have seen pics of a nice looking direct port GTR set-up in here somewhere. I had a feeling it was actually in the for sale section but I did a search and couldn't find it in there. it must have been somewhere here in FI section.

ill guess it was BU5TER's.

Hypertune milled me up some new runners with 1/8 NPT tapped bosses underneath to run direct port. Ive never used even my single fogger set-up yet...suffice to say ive never fitted them.

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XRATED Veteran

XRATED

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The spare injector placments on a Greddy plenum look to be the go. BU5TER'S set up is quite neat, however it looks like they are 90 deg foggers that sit in the runner.... I guess it's a ballance, good even flow and dispersion of fuel and nitrous v's a small flow restriction in the runner.

Obviously the gain using nitrous far out weighs the small airflow restriction the fogger nozzle causes, but what if the nitrous is not used... how much restriction will the nozzle tip create?

Anyone have any ideas?

Cheers

Justin

oh oh can i say it?

lol doing it anyway.....

Not a bad way to spend ten grand! lol ahhh gets me everytime hahahaha.

... I'd better run out and get a Motec System Exhaust too!

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R.I.P.S NZ Collaborator

R.I.P.S NZ

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We took all the 6 port kit off because people thought it was the only reason we went any good, lol.

Truth is, we never did try it and we did go quicker once it was all removed, wether it had anything to do with the removal of the foggers or just the other changes we made after then, who knows.

Rob

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Johnny Veteran

Johnny

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We took all the 6 port kit off because people thought it was the only reason we went any good, lol.

Truth is, we never did try it and we did go quicker once it was all removed, wether it had anything to do with the removal of the foggers or just the other changes we made after then, who knows.

Rob

I was under the impression you used nitrous to help efficiency of the motor at the drag strip, bringing on boost quicker and cooling the intake charge as when your stationary; there is less air moving through the radiator/intercooler etc.

sounds very accurate to me, id have no issue running a 50hp shot if i ever got into drag racing

Nitrous is for fags who can't make real horsepower. (s/s)

lolz, nitrous has other uses too. Ever seen shooter with mark wahlberg.....

if anyones curious, be careful it causes acute dementia.

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XRATED Veteran

XRATED

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Basically I want to optimise the current set up in the car. I would like to keep the T517Z's for the response/power delivery on the street (I live in Tassie... there are LOTS of great driving roads). But come race day fitt the bottle, make some more hp and torque.

I like to race my street car. Nitrous allows me to race more consistant from day to night, by controlling/equalising intake temperatures etc. It also gives me more immediate torque to get out of the hole a little easier with a full weight car, without bouncing the thing off the limmiter at the line.

For the power gains, nitrous is cheaper and gives better results than race fuel.

There are other options for more power, but they all cost ALOT more for smaller results.

If this makes me a homo (Dirt G) then IM PROUD!!!! ha ha ha.

J.

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XRATED Veteran

XRATED

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G'day Justin, good to see you took the comment the right way. Hows your piston pins on strip-down? Have you bent any? This is why im reluctant to join the community of pride.

I'm not bent yet/ummm they're not bent...

I'm going to stay with stock comp ratio and probably lower the boost a few psi when I use a largish hit of gass (to keep cylinder pressures under controll), obviously pull some timing out (depending on tume ofcourse) to keep it fron knocking on the initial hit. Also I'm going to keep the line length from solinoid to the fogger manifold longer than required to slow the hit (obviously have the fuel line a little shorter than the gass line).

Then see how I go...

I am a little nitrous proud... hell even my go-ped has 5hp and a 2hp shot of gass!!!

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PM-R33 Grand Master

PM-R33

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Nothing wrong with a bit of gas. Good cheap power without having to upgrade to bigger turbos, which in turn increase lag. For a street car that wants to have a bit of fun on the side nitrous is a great way to go. I still want to hopefully get there one day.

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