Bigger Injectors

[fresh]

some tuners may reccomend bigger injectors because they cost stuff all more and allow plenty of room for future growth

which brings me to my actual question, is there any difference btween 550s and 740s apart from the flow capabilities.

I'm not sure what i mean exactly but are smaller injectors more effective ?, efficient ?

[Adriano]

The difference between 550's and 740's is that to make the most of the 740's you need a built motor. If you dont intend on doing this in the near future, just get the 550's, better tunability, idle quality, cold start. If later you need to upgrade dur to wanting more power, you can sell the 550's for stuff all less than you paid for them.

[dmr]

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

will they fit into an rb20det? will they need a resistor pack?

[Sheng]

now the question is where do i buy injectors?

find some cheap one on nengun.com

are they the cheapest?

[LTHLRB]

How much did it cost you to get hi-flowed?

I got mine done as a sponsor type of thing with creatd, so price cant be said.. but you can give them a call the number is in my sig, tell them i referred you and speak to Rob.

These injectors visually look stock.. but their are precisely 720cc on each injector, tunability is great aswell. These were used on their white drag r33 gtr with 440AWKW and ran a mid 10 quarter mile.

My brothers 180 uses them aswell, does not miss a beat and is heavily drifted non stop.

Edited December 10, 2007 by LTHLRB

[RBJ3T]

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.

Cheers mate!

I think i'll take the safe option and grab a set of spankers. lol. No point cutting costs.

[LTHLRB]

and why wouldnt you ash? i got my set for WAY cheaper than a set of sards or nismos.. give me a solid reason why u wouldnt use them?

i can give a solid result using them and a tomeii pump with a stock reg when my car is tuned.. using these injectors which cost me stuff all.

also look up the white gtr that they ran, 10.5 with over 400kw and traction issues, used these injectors from day 1..

the EVLR34 gtt uses these, made 350kw on c16 040 pump and an internal gate 3540 .82

all of these cars are safely tuned with a rich air fuel ratio..

[R31Nismoid]

and why wouldnt you ash? i got my set for WAY cheaper than a set of sards or nismos.. give me a solid reason why u wouldnt use them?

And by your own admission you didnt pay anywhere near close to RRP for them

I dont have access top flow test, spray test and so on.

So for the what, $150-200 difference (talking RRP here, not mates rares), i'd rather go with something used the world over.

Thats just me, i used to skimp on $100 here, $200 there and paid double many times.

So until i see flow testing, spray pattern testing etc etc for my own viewing, i'll go with the know.

Thats just how i am these days as im not modding on a tight budget anymore

[LTHLRB]

im not modding on a tight budget.. iv seen the flow test on these injectors.. and they flow a shitload, (i cant say exact figures because i dunno wtf im looking at) but yeah.

"And by your own admission you didnt pay anywhere near close to RRP for them" meaning?

[R31Nismoid]

well you said you got your set WAY cheaper... that really has nothing to do with it as you didnt pay close to retail.

So when your talking normal pricing, there is only $150-200 difference.

Have you got any spray pattern comparisons Nismo vs Flowed?

Just a flow bench doesn't convince me.

[LTHLRB]

if you wanted to, you can compare them.. and they will be very close between eachother.

$200 is still 200 doesnt matter what it is.. 50 bucks is a diff story.

Nismo's and Sards are easier to get your hands on, but bang for buck.. Cant go past a set of highflows.. (i dont mean that in a cheap and nasty way.. eg. slide highflows)

[R31Nismoid]

if you wanted to, you can compare them.. and they will be very close between eachother.

$200 is still 200 doesnt matter what it is.. 50 bucks is a diff story.

Yeah, but by the time you pay to test them flow/spray and so on (for my piece of mine)

Suddenly the $200 saving isnt $200 anymore for peace of mind, where out of the box Nismo items im not worried at all

Its each to thier own in this one i reckon. Just personal choice.

[LTHLRB]

each to their own yes.. but the person who flows them in house, tests them a few times. Im stating that highflows arnt bad (if done right)

[GeeTR]

Detonating a motor due to a sticking high flowed injector, would seem completely ridiculous in hindsight (im aware 99% of mod'd units work fine)

For ~$100 / brand new injector, any debate at all between High Flow <-> New SARD/NISMO, is pure craziness when dealing with something that represents such a critical single point of failure.

Edited December 10, 2007 by GeeTR

[GeeTR]

find some cheap one on nengun.com

are they the cheapest?

Find out for yourself

Nengun

Greenline

Perfectrun

Taka Kaira

[Sheng]

yeah cool cheers,

think mite of been stated before, but are 800cc injector too big for stock internals with a hks GTRS? plus all other supporting mods.

thanks guys

[charlie25T]

i have rb25t......................... im using nismo 740cc injectors

i got them for $870 from sliding

there heaps cool

[frozenwaffles]

just one thing as far as selecting size of injector... i went for 555cc nismos. i have heard from plenty of tuners that you shouldnt get any bigger than you need as the larger the injector the most 'unstable they are and low rpms' and are harder toncontrol...which makes sense to me...just something to consider...

like most things bigger is not always better...

[Sheng]

^^^^^ thanks for that waffles, i was worrying about the roughness during low rpm, so id say 800cc are too big for me then ,

im running 210rkw on 13 pounds, so 555cc is more than enough if i want 250-270rwk with a GTRS then..