7MGE Vs. 1UZFE Injectors

[Lextreme II]

I hope this R&D help my members. This is fresh out of the oven. The 7MGE injectors are from Toyota Supra from 1988-1992 AKA MKIII N/A motor. There were two sizes produced. Yellow Tip is 295 cc/min and Green Tip is 315 cc/min. I used a highly precise caliper (professional) to do all the measurements. Here are the of the injectors:

Stock 1UZFE Injector:
Code number: 23250-50020
Overall Length: 2.800"
Injector Tip Length: .260"
Injector Inlet Length: .614"
Injector Tip Diameter: .368"
Injector Inlet Diameter: .415"
Injector Opening:2
Injector Connector: Type F
Flow Rate: 251 cc/min
Impedance: high 13.8 ohm


Stock 7MGE Injector:
Code number: 23250-70080 Light Green Tip
Code Number: 23250-70040 Yellow Tip
Overall Length: 2.810"
Injector Tip Length: .260"
Injector Inlet Length: .614"
Injector Tip Diameter: .370"
Injector Inlet Diameter: .416"
Injector Opening:4
Injector Connector: Type F
Flow Rate: 315 cc/min Light Green
Impedance: High 13.8 ohm

Stock 7MGE Injector (Yellow):
Code Number: 23250-70040 Yellow Tip
Overall Length: 2.810"
Injector Tip Length: .260"
Injector Inlet Length: .614"
Injector Tip Diameter: .370"
Injector Inlet Diameter: .416"
Injector Opening:4
Injector Connector: Type F
Flow Rate: 295 cc/min Yellow Tip
Impedance: Low
Note: Need resistor in order to work on 1UZFE.


Basically the two injectors are identical. I got the 12 used injectors for a great price. They will be send to a injector specialist for cleaning and balancing. They are direct bolt on to the 1UZFE.

Stock support 8 psi
Yellow Tip support about 10-11 psi (needs Resistor)
Green Tip support about 12-13 psi.

Those injectors are like gold to me. The are in high demand and especially the Green Tips... very hard to find. Anyone have a 3SGTE injector laying around? I would like to compare them to 1UZFE injectors. Check out the pictures.

 

[Lextreme II]

More Pictures:

 

[Lambo]

Hi Lextreme, found this little bit of info at http://www.wolfems.com.au/support/injectorflow,and also at http://www.toysport.com under injectors maybe it will help.
both sites seem to suggest there is also a 315cc in light green available for the 7MGE

Nippon Denso
315
light green
13.8
30.9
63.0
290
Toyota
7MGE

Best Regards
lambo

 

[Lextreme II]

Damn,
You are right. I knew that, but didnt bother to look at own data.... 315 it is.. i will make corrections..

 

[Cobra]

Are all the injectors from different year model 1UZ's interchangeble. Crown motors I am talking about. Reason being I have had a set from another 1UZ cleaned and balanced. After installing them in my 1UZ I can't get it to start.

 

[Lextreme II]

Crown should be the same thing except its only 220 cc/min.

 

[Zuffen]

Cobra,

If you need a set of Soarer (SC400) injectors let me know I have a set spare.

 

[Cobra]

Strangest thing. I put the original injectors back in and it started straight away. Other than the obvious, the guy who did the servicing stuffed them, does anybody have any ideas?

 

[uzz32pete]

Lex I got myself 12 green ones as well!
hmmmmm - so we both might have 4 left over.......

The wreckers wanted to sell them in batches of 6, eight cost nearly as much as 12 so I got the 12.
Now just have to get them cleaned and get some generic o rings to reseal them - heaps cheaper than genuine toyota items.

I hope that with the injectors I can avoid the cost of a rising rate fuel pressure regulator which seem to cost between $360 - $500 Aud for a Vortech FMU.

In Australia I got mine from here:

Name:
EKW Group of Auto Parts Rec

Address:
44 - 80 Hampstead Road

Suburb:
MAIDSTONE

State:
Vic

Postcode:
3012

Phone:
03 9274 4416

Fax:
03 9274 4442

Email:
[email protected]

The guy knew straight away what I was talking about - he knew about the two types, green and yellow,
$220 Aud for 6, $330 for 8, $440 for 12. $15 frieght.
Cleaning is about $20 each so $160 for 8, $240 for 12.
Cost me $440 plus 240 plus 15 for 12 cleaned injectors - total $695 Australian for 12 injectors plus new o-rings.
So a cleaned injector cost me around 60 bucks Aud each
So I have 4 green injectors left over $240 cleaned.

best regards
Peter Scott

 

[Lextreme II]

Actually, I am geting some 1JZ injectors. They are bolt on too and flow rate is 380 cc/mm.... i will collect all of them and do a full article on it.

 

[V8 MK2 Supra]

BTW....

the 315cc green injectors are high impediance

while the 295cc yellow injectors are low impediance

 

[Lextreme II]

Can some one please confirm the high and low impedance on the 7MGE injectors. I just got some Yellow Tip..... How do i measure the injector ohm?

Here are the pictures.

 

[V8 MK2 Supra]

Lex,

the light green tip is a 315cc high impediance injector (7MGE engine 89-92

the yellow tip is a 290cc low impediance injector (7MGE engine 86 1/2-88)

the black tip is a 440cc low impediance injector (7MGTE engine)

you cannot use a low impediance injector to a high impedianc esystem and vise versa...

to check the impediance of the injector is by using a multi meter and put the range to omhs.... this is the measurement of resistenace.... then by using the + and - test leads ... test it across the two male pins in the individual injector (picture 3 from last post of lextreme) then read the measurement

usually a low impediance system will have a range of 2-4 omhs
while a high impediance system hill range from 12-14 ohms

 

[uzz32pete]

Autospeed list yellow as low and green as high.

Most multimeters have an ohms setting - stick it on the two terminals and it should give a reading in ohms. I have attached a picture of the greek symbol.

 

[Lextreme II]

Jay,

Thanks for the information..... now i know what not to buy...

 

[LexTite]

Lex,

the light green tip is a 315cc high impediance injector (7MGE engine 89-92

the yellow tip is a 290cc low impediance injector (7MGE engine 86 1/2-88)

the black tip is a 440cc low impediance injector (7MGTE engine)

you cannot use a low impediance injector to a high impedianc esystem and vise versa...

to check the impediance of the injector is by using a multi meter and put the range to omhs.... this is the measurement of resistenace.... then by using the + and - test leads ... test it across the two male pins in the individual injector (picture 3 from last post of lextreme) then read the measurement

usually a low impediance system will have a range of 2-4 omhs
while a high impediance system hill range from 12-14 ohms

hey, i've been studying the threads on this matter, but it continues to make me very foggy on it. I'm wanna run NOS in my 90 ls 400. I was told that more gas would be needed so injectors must be replaced (true or untrue?).

Of course i wanna go for the biggest (1988 rx-7; 550cc) they are also said to be plug and play. But since they are over 440 cc, must i upgrade my ecu (which i dont wanna do; true or untrue?).

Can i maybe just slap a nos system on there and some copper plugs?

This is not a tech question i hope.

 

[Lextreme II]

NOS, i think u can get the SUpra MKIII 295 (Yellow) or 315 (lime Green) should be ok. If you do Lextreme NOS which i doubt because you still have stock setup then u can get the Mazda Rx7 460 cc. The above injectors are all plug right in.

 

[LexTite]

i called this guy at zex, though he wasnt too helpful, he said that my ecu MUST be upgraded if i upgrade the injectors. I dont wanna do all that, how can i health safely and mechanical safely get a 100 shot, while doin the bare minimum upgrades? If i do the 315 inj, must i change the ecu. If so, whats the cheapest way into it, im blind on the subject though i've read a book worth of threads. Whatever u recomend is the route ima go.

 

[edz]

running nos

i called this guy at zex, though he wasnt too helpful, he said that my ecu MUST be upgraded if i upgrade the injectors. I dont wanna do all that, how can i health safely and mechanical safely get a 100 shot, while doin the bare minimum upgrades? If i do the 315 inj, must i change the ecu. If so, whats the cheapest way into it, im blind on the subject though i've read a book worth of threads. Whatever u recomend is the route ima go.

Lextite, my understanding of running nos is that you only run it at full throttle and therefore for a very short time (usually turned on with a switch and triggered off the throttle butterfly at full throttle).

You also need to add extra fuel at the same time to cool the charge or else you will melt pisons and valves as it reaches a white heat (not nice - think of it like grabbing an oxy torch, seting it to oxy cutting and sticking it down into the combustion chamber!). Under normal driving it's not used and standard injectors will be fine as will be the standard ecu. Most Nos systems come as a complete kit with their own independant fuel/nos feed system and are therefore a simple bolt on 50 to 150 hp increase. Installed and used correctly, they are great, poorly setup, you melt your motor (in a very short time).

Hope this helps.

 

[98GS400Turbo]

wetshot. doesn't need bigger injectors.