Jump to content
SAU Community

Bigger Injectors

RBJ3T

By RBJ3T,
in Engines & Forced Induction

 Share

Recommended Posts

RBJ3T Proficient

RBJ3T

Posted
Posted

Hey,

I need bigger injectors bad as under full load i'm hitting 97% on my injector duty. I don't really want to go to the trouble of putting on a fuel rail. I kow you can still get big injectors that screw in and I guess my question is what is the biggest size CC injectors I can fit into the RB25DET.

Cheers. She needs juice. lol

Link to comment
https://www.sau.com.au/forums/topic/196636-bigger-injectors/
Share on other sites
R31Nismoid Grand Master

R31Nismoid

Posted
Posted

Nismo 550's will be more than enough for your turbo (they support 300rwkw no problem).

Largest - I used Nismo 740's for mine 369rwkw.

Stock Rail, Stock Reg etc etc.

I think Sard's in the 800 are also direct-ish fit

RBJ3T Proficient

RBJ3T

Posted
  • Author
Posted
Nismo 550's will be more than enough for your turbo (they support 300rwkw no problem).

Largest - I used Nismo 740's for mine 369rwkw.

Stock Rail, Stock Reg etc etc.

I think Sard's in the 800 are also direct-ish fit

396RWKW!!! Thats massive man! What are you running?

Cheers for the advice. I cannot wait to get all the kit on. Iv'e gone a bit silly but whatever yeah! Not long till all the parts come in and i'll be aiming for around the 290 RWKW mark. To tell you the truth i don't really want more than that. I still want to be able to drive her on the road.

Cheers

Kane

SLYNE Proficient

SLYNE

Posted
Posted (edited)

Nismo 550's will be more than enough for your turbo (they support 300rwkw no problem).

Why do tuners tell me to get bigger then 550cc if they can handle 300rwkw

im looking at between 240 - 260 rwkw

Highflowing injectors are abit cheaper then getting aftermarket injectors but i hear they arnt as good, can anyone confirm this?

Edited by SLYNE
R31Nismoid Grand Master

R31Nismoid

Posted
Posted
Nismo 550's will be more than enough for your turbo (they support 300rwkw no problem).

Why do tuners tell me to get bigger then 550cc if they can handle 300rwkw

im looking at between 240 - 260 rwkw

Because they are full of shit :D

No other reason, or they are trying to sell you something that you simply do not need.

RBJ3T Proficient

RBJ3T

Posted
  • Author
Posted
Because they are full of shit :P

No other reason, or they are trying to sell you something that you simply do not need.

Nismoid,

As I am at the stage of installing a whole heap of gear I need to make sure I make the right decision when it comes to Injectors. Can you point me in the right direction as to where would be a good place to get the standards flowed. Or even someone to talk to about this.

Thanks Mate!!

stolen_s15 Mentor

stolen_s15

Posted
Posted (edited)

A good option for cheap injectors is 480cc ones out of manual S15's, they are a direct drop in for R33 RB25DET's.

I'm aiming for approx 260rwkw and 6 of these will easily suffice, and only costing me $280 delivered for all six.

Edited by stolen_s15
R31Nismoid Grand Master

R31Nismoid

Posted
Posted
Nismoid,

As I am at the stage of installing a whole heap of gear I need to make sure I make the right decision when it comes to Injectors. Can you point me in the right direction as to where would be a good place to get the standards flowed. Or even someone to talk to about this.

Thanks Mate!!

There have been a number of threads with suppliers/prices and so on.

Just search with "hi-flow" "injectors" and you'll be right

Personally i wouldn't use hi-flowed injectors.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • Duncan
      Looking for a part number for this part here

      By Duncan · Posted

      So....to find any R chassis part number, get your VIN (will be something like ER33-xxxxxx for you) and go to: https://www.amayama.com/en/genuine-catalogs/nissan and enter it. From there you have access to a web version of Nissan's part system, FAST. It is a bit tricky to get used to, so maybe have a shot and post up what you think.  You can also search by general model but note in some cases your car might have different options so VIN is safest.  On diagram 211 I got 14075-75T16 for Connector, Water Hose If I search for part 14053‑21U10 that you posted, that is also a water hose but not the one bolted to the plenum and 14075‑04U00 is the fitting where the water hose goes into the block.
    • Duncan
      Duncan's V37.......race car?

      By Duncan · Posted

      Yeah now we are talking I much prefer coolers in the front middle because it lessens the chance of a small bump to a corner stopping the whole event. I was thinking the AT cooler can move out of the radiator, delete the AT/engine coolant interwarmer and mount a separate cooler with a thermoswitch somewhere further back as is common in racing, that would be one thing. Beyond that, the engine oil cooler is an obvious one to move to the wheel arch, potentially one on each side, but unused space is an issue. I did have a earlier pic with the bumper off but it doesn't show how busy the corners are: DS is full of the auto driving sensors and PS is totally fully of windscreen washer fluid reservoir But ultimately I was hoping to keep the AC, and the water/air heat exchanger is fundamental so it is not just the radiator that needs to be in front BTW here's airflow to the rad as it ran at the track (one horn is gone now and I'll remove the lights next time):
    • turboedsloth
      New Wasteland Wa Topic

      By turboedsloth · Posted

    • V35_Paul
      Infiniti Q60 Navigation Update

      By V35_Paul · Posted

      your right the maps for Australia came out in 2017 but are 2010 maps. i got the updated maps SD card put it in and it was the same. Same maps in my Brothers Nissan Patrol. 2020 i think his car is
    • silviaz
      Returning after a long time!

      By silviaz · Posted

      Yeahhhh, the costs have killed me. Spent more than the cost of an engine rebuild and it most mostly servicing and a tune lol.
×
×
  • Create New...