KA24E Injector question

[Sil-080]

i want to upgrade the fuel injectors for my KA24ET...will these work?

http://cgi.ebay.com/ebaymotors...03073

[SingleCamSam]

Yes, but the stock ECU will not run them.

[Sil-080]

if i run a S-AFC would it work..?

[huguetpj]

I thought RB26DETT injectors where side fed... well anyway from the pictures they seem to be top fed so they should (?) work with the CA18 or KA24E, but not the SR20DET as advertised.

You should be able to manage them with a SAFC 2. Can the SAFC compensate +-50% or +-20%, don't remeber.

[SingleCamSam]

I think +/- 50%, and it will allow you to run a Z32 MAF as well.

[andrave]

gonna need a wideband and a dyno to tune it right though.

[Sil-080]

well for my turbo setup is as follows :

Garrett T3 Super 60Walbro 255 lph fuel pumpCustom Log style manifoldVortech 10:1 FMUSpearco FMIC2.5" I/C Piping3" Custom exhaust & downpipe

how much boost could i run w/ the stock injectors? i don't plan on exceeding much past 7psi

[GreatSX]

If you're not going to venture beyond 7psi you don't need bigger injectors, at least that's what I've been studying all day, my eyes are dry, I'm eating lukewarm pizza, I've been studying law books in 15 minute intervals(for school), but that's what the general consensus was, if you go beyond that 9psi the nissan gods say you should buy larger, but don't go nuts and buy the 440's a 350-370cc should be good enough. That's more than enough to prevent detonation.

[Sil-080]

nice...btw this is a '90 SOHC so...anybody know roughly how much power i might put down..?

[Sil-080]

GreatSX...u live in va beach too?! nice...drop by my work sometime...i work at Charles Barker Toyota off of Laskin in the service dept...name's Elric...peace

[GreatSX]

Yeah man, is it Eric or Elric?

[Sil-080]

eLric..haha it's not a typo

[TurboKA37]

i suggest upgrading to some 370cc injectors. at 7 psi ull be running the stock injectors pretty high. u can run the stock injectors at 7 psi but id rather be safe than sorry. i think ull be putting down about 230+ rwhp if tuned right

[Sil-080]

well about the 370cc injectors...what do i do about running them?

[TurboKA37]

ull prolly need a S-AFC to tune it a bit, which isnt a bad thing to have when u are running a FMU anyway. ive heard the 370's top out at about 250 rwhp

[GreatSX]

I have a friend with a t3/t4 hybrid his running about 7psi and he hasn't had a problem, so I don't believe it's that urgent, although homeboy is right better safe than sorry, plus it's good to have the SAFC, but for tuning purposes the EGT gauge is better. As for the size of your injectors the 300ZX-TT Uses 370cc injectors (stock)and thats a 312hp car the Mitsubishi VR4 uses 350 stock, and I know thats up around 300, the problem is if you get injectors that are too big, you risk idle problems and possibly flooding your engine.

[TurboKA37]

^^ but those cars have 2 extra cylinders and injectors

[GreatSX]

good point I didn't think about that, I'm just saying they're used in those supercar application, and you know that when they come from the factory they are built with better safe than sorry in mind so if he's going to build his engine up he should make the jump, but he's just going to hook up the kit and roll around on that for awhile, that the 370's are a good choice.

[TurboKA37]

i agree

[andrave]

one problem, its a ka24E guys, top feed injectors. the 370cc's off 300zx/sr20 are side feed and will take a custom fuel rail.If you want a slightly smaller top feed get some stock ones off a ca18det, there are usually a couple guys who have upgraded that will sell you the stock ones cheap.Or if it was me I'd probably just get the 444's.What engine mods have you done? forged pistons, rods? anything?

[GreatSX]

you can buy top feed 370 fuel injectors.