injector sizes?

Post by **Night** » Fri Nov 08, 2002 7:36 pm

i have been looking around for some time now and i am not sure what size injector to get and i want to know what everyone else is running i will be putting the nsport stage1 turbo kit on and i want to turn up the boost after a while but i dont know the why to go i know sr injectors fit the ka24de but when is to much the stock ones are some where around 380 cc is that enough for like 15- 18psi or should i go with like 444cc then will the car still run good at like 5-7psi wiht the big injectors. so any info is helpful oh ya i have a 93 thnaks

Post by **Former_240_s14** » Fri Nov 08, 2002 7:36 pm

I would like to know that also, because I am either going to do the same nsport stage 1 kit next summer or I am sellin the s14 and buying a mkiv supra. I think the sr injectors do fit in without any customizing, but maybe they require certin injector seals. I am not sure on that so don't quote me. :withstup

Post by **huguetpj** » Fri Nov 08, 2002 7:36 pm

AFAIK the SR 370cc side-feed injectors will fit the KA24DE fuel rail. And, through some very simple (don't take them for granted) calculations I found that:

- 270cc injectors good to about 4PSI on stock fuel press- 370cc injectors good to about 10PSI on stock fuel press- S15 SR 440cc injectors good to about 15PSI on stock fuel press

If somebody knows better please let me know since I'm debating on which injectors to go with.

Although I don't know if the S15s injectors will fit on the stock fuel rail without some mods.

Post by **Night** » Fri Nov 08, 2002 7:36 pm

but will 444cc injectors work on like 3psi

Post by **huguetpj** » Fri Nov 08, 2002 7:36 pm

the 440cc injectors will work on 3PSI, but of course you need fuel management or a tuned ECU or you'll run way too rich and bog the car down

Post by **midnightsliding** » Fri Nov 08, 2002 7:36 pm

dose anyone know where u can purchase 440cc injectors for a low price? or not

Post by **andrave** » Fri Nov 08, 2002 7:36 pm

440's are really hard to find and not cheap when you find them. 550's are significanlty more abundant and will support around 325 RWHP.

Post by **Project DC2** » Fri Nov 08, 2002 7:36 pm

midnightsliding wrote:dose anyone know where u can purchase 440cc injectors for a low price? or not

if they're top feed injectors like bosch style you can get a set of 440CC injectors from camp1320.com for 210$ shipped.

i take it that nissan Ka24DE's use side feed injectors? can someoen please clear this up for me ? thanks

Post by **huguetpj** » Fri Nov 08, 2002 7:36 pm

Project DC2 wrote:i take it that nissan Ka24DE's use side feed injectors? can someoen please clear this up for me ? thanks

Yep... E = top fed, DE = side fed

Post by **Project DC2** » Fri Nov 08, 2002 7:36 pm

huguetpj wrote:Yep... E = top fed, DE = side fed

so .. i can geta 1991 240sx and get a KA24e fuel rail and run my 440's =) woohoo

Post by **andrave** » Fri Nov 08, 2002 7:36 pm

no, this was just addressed... the E fuel rail doesn't fit the DE.

Post by **SingleCamSam** » Fri Nov 08, 2002 7:36 pm

370cc Injectors: 250rwhp (8psi)480cc Injectors: 300whp (12psi)550cc Injectors: 350-360rwhp (15-16psi)

Assuming stock fuel pressure and a T3/T4 turbo.

Post by **andrave** » Fri Nov 08, 2002 7:36 pm

yeah but that doesn't necessarily mean those are set in stone. I've seen dyno tests on stock sr20 injectors when they maxed out closer to 230 hp. ditto with 550's.

Post by **d240t2** » Fri Nov 08, 2002 7:36 pm

And I've run 525cc/min injectors at 350rwhp.

injector sizes?

injector sizes?

Nissan Forums

Infiniti Forums

Datsun Forums

Technical Forums

Classifieds / Marketplace

Nissan Motorsports

General Forums