2JZ Fuel Injectors

[GeneStarWindGSW]

OK I'm seeing that there's two sets of 2JZ non-turbo fuel injectors. I'm trying to find out whats the difference between the two & see if this could fix my running rich problem.

You can find them on this page. http://www.fiveomotorsport.com/Injector_SetsTOY.asp
They are found on the second column, second row.

those are mines

1993-95 SUPRA 3.0
23250-46030/46031
325cc
SET 6

Standard Supra (non-turbo)
6/Set $249.50
plus $60 Core Deposit

These are the ones you sent me

Fitment: 2JZGE
1993-95 Supra(non-turbo)
This is the stock
replacement Denso part.

1996-97 SUPRA
23250-46050
325cc

Standard Supra (non-turbo)
6/Set $259.50
plus $90 Core Deposit

whats the difference?

 

[soapra]

Get your volt meter and check the impedance.

 

[GeneStarWindGSW]

While i look for my volt meter how do i check the impedence?

 

[Rich]

While i look for my volt meter how do i check the impedence?

He means a multi meter. Set it on the impedance (Ohms) setting and measure between the two pins.

Around 2-3Ohm is low impedance and 8Ohm and up is high impedance.
With the lows you will need to wire in a resistor pack.

But why, if I may ask, are you installing such small injectors? Are you N/A? (Don't tell me you swapped in a 2jzge or something in a MA70...)

 

[Jaguar]

No, he bought it with the 2jzge already installed. Now he's in GIRM (Get It Running Mode). The thing is way too rich as I understand it, and he's trying to make it run like stock. At least that was the plan when last I talked to him.

 

[GeneStarWindGSW]

Yea Jaguar basically sumed that up right. The motor runs, car doesn't move. Running rich is just 1 problem to fix. why you makin it sound like swappin a 2jz-ge is bad??

 

[soapra]

He means a multi meter. Set it on the impedance (Ohms) setting and measure between the two pins.

Around 2-3Ohm is low impedance and 8Ohm and up is high impedance.
With the lows you will need to wire in a resistor pack.

But why, if I may ask, are you installing such small injectors? Are you N/A? (Don't tell me you swapped in a 2jzge or something in a MA70...)

Yes that! Sorry had a long night.

 

[hottscennessey]

 

[Rich]

Yea Jaguar basically sumed that up right. The motor runs, car doesn't move. Running rich is just 1 problem to fix. why you makin it sound like swappin a 2jz-ge is bad??

Well, basically you would swap an engine to go up on the power ladder and swapping in a 2jzge in my point of view isn't a step forward unless you come from a 7mge.
What I mean is when you're taking the efforts to put in another engine, why not put in a turbo engine straight away. Turboing a 2jzge still has it's limits unless you lower the compression somehow, which is quite some work.
So basically I'm saying when you have the choise I'd put in a turbo engine.

But as said, the car came with a 2jzge and maybe you like N/A's


As for the problem, a ge runs on maf doesn't it? Tried swapping out the afm yet?

 

[GeneStarWindGSW]

Well i measured both of the fuel injectors.

They both come out to 14Ohms, so they both are high impedance?

Ok, now is the real difference between them lol.

Oh and about the MAF & AFM. thats like gibberish to me lol.

 

[GeneStarWindGSW]

Also there's a noticeable size difference between them

check it out.(sorry if not no professional photographer -_-)

 

[hottscennessey]

As for the problem, a ge runs on maf doesn't it? Tried swapping out the afm yet?

The problem... the problem is the car is run off of 7MGE electronics- ecu, wiring harness, ignitor, distributor cap, flapper AFM...

His car came with the 2JZGE injectors in them (higher flowing than 7MGE). This will cause the readings to be screwed up because the ECU thinks it's putting in fuel per 295(?)cc injectors. The car came with 2JZGE injectors which obviously flow a bit more at 325cc's.

Another problem.. fuel pressure might be higher considering he's running the 2JZGE FPR, another issue the builder overlooked if he wanted this setup to run without tuning (because in theory it works).

Since I get headaches when I think about this setup I can't offer him much info, and I'm too lazy to feed him all the specs from the 2JZGE manual (like stock FP from the FPR).

 

[GeneStarWindGSW]

Scott would there be a problem interchanging these injectors?? even with the size difference? I was j/w but i wouldn't run em in my car cuz a) there's damn frickin Styrofoam peanut crap in it -_-

 

[hottscennessey]

My advice...

-Download the 2JZGE manual
-find the stock fuel pressure spec
-Download the 7MGE TSRM
-find the stock fuel pressure spec
-report back (we can help you from there)
-Install high impedence 7MGE injectors (89+ N/A's I believe).
(Car should be in good running order after this step)

Fix transmission.

Thats it!

 

[hottscennessey]

DO NOT RUN THE INJECTORS I SENT YOU..

-peanunts (styrofoam) in the injectors when mixed with gasoline will create napalm.. gummy flamable substance which creates a crusty product... (must be cleaned.. I did this on purpose so you wouldn't run them without cleaning).
-ALSO the injectors are too large for your ECU to compensate on it's own.

 

[hottscennessey]

2JZGE stock FPR -
Fuel pressure:
265–304 kPa (2.7–3.1 kgf/cm2, 38–44 psi)

...not sure but I think thats a good amount more than the 7MGE

EDIT:

7M fuel pressure is
33-40 PSI

 

[GeneStarWindGSW]

you loser if u hadn't put them in peanuts then they woulda been fine but since u did that i have to get then cleaned i know that BUT it cost about $70-85 to get a set of injectors cleaned and im broke.

Also my set of 7m-ge injectors won't work with my car. the clips for the injectors are different. The 2J is top and the 7M ones are on the bottom so the clips won't fit.

 

[GeneStarWindGSW]

I'll also check the impedance on the injectors (the 7m ones) because im not sure what impedance they are.

 

[hottscennessey]

Dude.. you get the right clips and solder them on. It's not a big deal!

You have no business running the 2JZGE injectors with your setup. PERIOD. LOL.

The 2J is top and the 7M ones are on the bottom so the clips won't fit.

WTF does that even mean?

If you're saying they won't fit your wrong. I ran 7M injectors in my fuel rail AND mustang injectors.

 

[GeneStarWindGSW]

Yea i need to get clips from a 7m wiring harness, you got an extra 7m wiring harness lying around? lol.

The clips(the sides of the injectors) won't fit my current wiring harness. thats what i was trying to say. I wasn't saying the injectors DIDN'T fit , i was saying the CLIPS didn't -_-.

Also i used ur TB you sent me because mine had a broken bolt at the top.

Also i just did EGR delete on my supra today. Do i have to remove that valve looking thing under the intake pendulm??

there's also a butterfly kinda thing in there but im not sure if this is associated with the EGR.

ur old TB didn't come with the vac lines, so i had to swap mines out and stuff . Those metal vac lines are really annoying though.