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View Full Version : 7MGE Vs. 1UZFE Injectors


Lextreme
08-10-2004, 10:59 PM
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
08-10-2004, 11:11 PM
More Pictures:

Lambo
08-12-2004, 01:26 AM
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
08-12-2004, 01:36 AM
Damn,
You are right. I knew that, but didnt bother to look at own data.... 315 it is.. i will make corrections..

Cobra
08-14-2004, 11:23 PM
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.
________
WELLBUTRIN LAWSUIT SETTLEMENTS (http://www.classactionsettlements.org/lawsuit/wellbutrin/)

Lextreme
08-14-2004, 11:43 PM
Crown should be the same thing except its only 220 cc/min.

Zuffen
08-15-2004, 04:21 AM
Cobra,

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

Cobra
08-15-2004, 04:25 PM
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?
________
OG KUSH SEEDS (http://marijuanaseeds.org/)

uzz32pete
08-15-2004, 07:11 PM
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:
sales@ekw.com.au

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
08-16-2004, 10:05 AM
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
08-16-2004, 10:16 PM
BTW....

the 315cc green injectors are high impediance

while the 295cc yellow injectors are low impediance

Lextreme
08-16-2004, 11:14 PM
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
08-16-2004, 11:34 PM
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
08-16-2004, 11:36 PM
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
08-18-2004, 12:12 AM
Jay,

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

LexTite
10-26-2005, 11:31 AM
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
10-26-2005, 11:49 AM
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
10-26-2005, 06:52 PM
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
10-27-2005, 06:59 AM
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
10-27-2005, 07:46 AM
wetshot. doesn't need bigger injectors.

Murphy
10-27-2005, 08:15 AM
Exactly, you only need bigger injectors and ECU change if using a dry nitrous shot, which you shouldn't do anyway. A wet system, or better yet a multi-port wet system, will have its own fuel supply, and you needn't change anything else except for the ignition retard.

LexTite
10-30-2005, 08:14 PM
I though wet shot need to be monitered by computers and line graphs, with electronic boost levels gauges. Is wet just as easy as dry, if so i'd rather do wet. But i've seen some ridid things happen to heads, hoods, and blocks at the track attempting to go that extra step. Some where on the line of detonation, dont know what it means, but its usually used in the same sentence with "bomb".

LexTite
10-30-2005, 08:25 PM
Murphy. About the Nitrous. Would i need the extra laptops with the engine gauges and ****? a wet system sounds alot easier, and i know the results are better. Can the wet system be just as plug and play as the dry system, and leave me out of pocket only $650+/-. If so what is the recommended/"mechanically safe" shot amount with the dry, and if u know whats "mechanically safe" with a wet system? And since i've already upgraded to the 315cc (yellow tips), and shooting a dry 75 shoot (Zex), would there be a significant difference to do the 75 shot wet? Cause i wanna break a 100 shot, but rumor is i'll break something in my drivetrain attemping to spin the 255/30/22's that quickly.

CassMori
01-12-2006, 08:40 PM
hey guys, I know this is kind of an old thread, but this is the closest I could find via search to what I was looking for.
I've got a 1uz manifold I bought off eBay last year, for the TB for my Supra, and I've been trying to find out which injectors it has since then. They don't match any of the ones listed, for the 1uz or otherwise, that I can find. I'm putting it back up for sale on eBay, so I'd like to find out this info if any of you guys may be able to help.

This thing has gray-top injectors (Denso), appear to be stock, with p/n 23250-50040 on them. Any ideas about the specs for these? Thanks!

Lextreme
01-12-2006, 08:48 PM
http://www.lextreme.com/forums/showthread.php?t=4324&highlight=LS400+injectors

Its possible its from the Crown.

CassMori
01-12-2006, 09:16 PM
you're right, I took a look at the high-res pics I made when I got the manifold in, with close-ups of the numbers. It's the 23250-50010 (I don't see that small print to well, apparently :redface: ), these must just be faded badly, because they're definately gray, just a touch lighter shade than the injector clips attached to them.
Thanks for the help! :biggthump

jibby
01-13-2006, 10:25 AM
I am running a 100hp dry nos system on my 1992 SC400 for over a year no problems what so ever and I use it all the time. I did not need larger injectors and I even got the shot up to 150hp no problems. However, I did need to install a high volume electric fuel pump (walbro), cooler running autolite nos spark plugs, and a piggy back ecu to help with the fuel/air mix ratio. A 100hp nos shot is a safe setup for these stock IUZ'z...That is it. Not a big deal....

Zuffen
01-13-2006, 10:27 PM
Cassmori,

The Canadian Supra Site has a good article on using the 1UZ MAF with (I think) Lucas 550cc injectors.

Worth a look.

LexTite
01-13-2006, 11:20 PM
well, since the installation, i've of course wanted more. seeing that my pockets werent as deep as i need them to be i gotta shop around for all upgrades that have a cost benefit ratio. What if come out of my chambers with is that basically, nitrous solves all problems.

Even though its aimed more toward acceleration, its boost and torque, its horsepower at the wheel in any term. And its simple. As i analyzed this, if you do the internals (rods, pistons, rings, and seal etc.), plus some tranny mods (only one i know of is the high stall converter) u can achieve alot of hp. You can get a 4000 dollar turbo system to get i guess around 150-200 extra hp's. Or simply get a wet kit for 850 bucks max, change some jets, and easily get the 300.

Personally im saving for the Dircect Port NOSzle System (1400, on ebay of course). Look up "NOSzle" on Yahoo all u'll see them on a lot of mustangs. After doin an entire bottom end rebuild with internals rated for 350+, i'ma spray a dual stage with the 100 shot dry i already have installed, followed with 250 shot through the NOSzle system. Ima see if i cant blow my heads through my fockin hood (what is neccesary to keep my heads on?) Doin some tru duals to obtain the extra 40hp's, but what ever they are the gotta be quieter than stock in idle. Heard the DynaMax fit that description.

Worst case scenario i need a new hood and engine, shouldnt run a grand. You all gotta wish me luck. And unless it catches fire, i'll still have my Nitrous systems. Only extra exspense not listed here is retarding the timing, still havent found an easy way of doin it. A piggyback, or stand alone cant be the only means of doin so. Holla.

jibby
01-14-2006, 01:30 AM
Believe it or not nos is not that flamable out of the bottle, it is a vapor if that sounds crazy but it is true, atleast that is what the nos pro's tell me, nos is safer then people think..... And yes with a 250 additional nos shot you will need larger injectors, and new forged pistons and rods after you blow the stock ones up, might even need a new block after that. Oh, and the tranny second gear should blowout on you depending which blows first the engine or tranny. My advise is don't push to far over 400 horsepower.... Remember stock 400's run at maybe 220-230hp and I would not run more then a 200 nos shot on a stock motor that is it....Oh and you better have coilovers and a good LSD, because nos is instant rear wheel power no controlled ecelleration, so kiss your rear or rear tires goodbye because they will be spinning out every time you hit the button..... See ya....

GriZZly
04-23-2008, 06:22 AM
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.

I know im dragging up a super old thread here but ive got some gen 1 3sgte injectors i was thinking of putting in my 1uz.. Is there a site where you got all this info from or how can i find out if these injectors are suitable?

DenZel
05-19-2008, 01:13 PM
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


i thought you could change to aftermarket ecu and the impediance issue would not matter??

as looking into getting 7mgte injectors for my 1uz to work with my adaptronic

sorry for bringin up old thread.

mshawari1
05-20-2008, 12:28 PM
Ohh .. its old thread . but I have question regarding that.

What is the limit for the 7MGE injectors .. i.e. how much WHP it can take Or boost ??

I read some where before that you can divide the cc/min by 5 to get the max FHP
is that right ??

mshawari1
10-07-2008, 01:43 PM
Can we add this two injectors to list of injectors that can be interchangeable with 1UZ injectors:
First:
Stealth TT / 30000GT VR4 stock 360 cc/min fuel injectors:
Dimensions
Total length 2.856 in 72.54 mm
Top feed diameter 0.412 in 10.47 mm
Feed opening 0.174 in 4.2 mm
O-ring diameter 0.450 in 11.43 mm
Bottom diameter 0.360 in 9.14 mm
Second:
MKIII supra injectors stock 660 cc/min fuel injectors:
Same dimension as above

cjsupra90
10-07-2008, 01:48 PM
Ummmm, No MKIII Supra came with 660cc injector....

Pre 89 N/A = 295cc
Post 89 N/A = 315cc
all turbo's = 440cc

mshawari1
10-08-2008, 10:09 AM
Oh!!!

IMO, that injector is for SR20DET

720cc Denso 195500-0830

mshawari1
10-08-2008, 10:09 AM
Oh!!!

IMO, that injector is for SR20DET

720cc Denso 195500-0830

edz
10-25-2008, 12:49 AM
Found this site which lists a lot of the injectors talked about above. Their data is based on actual testing at 3 bar, supports the figures given here plus lots of helpful injector pics http://www.witchhunter.com/injectordata1.php4.

They also have an injector size calculator for a given hp. http://www.witchhunter.com/injectorcalc1.php4


Oh!!!

IMO, that injector is for SR20DET

720cc Denso 195500-0830

DenZel
10-25-2008, 12:55 AM
chucked my 7mge ones in there, just the o-rings had to be changed.

edz
10-25-2008, 01:01 AM
Not sure what they are like, but these guys list new performance injectors that look like they will fit a 1uz for $59 ea US (440 - 630 cc/min), better than buying seconhand and getting them cleaned. Lex - they may be worth checking out and letting the forum know. They have pdf's with info on the site.

http://www.injector.com/fuelinjectors.php

Ed

hungryforinfo
09-08-2009, 05:52 AM
Lex, can you not change the impedance by using an additional resistor and therefor use the 440cc black 7MGTE injectors on a 1UZ?

Lextreme
09-08-2009, 09:54 AM
Here is a picture of the Supra Lime Green in a 1998-2000 VVTi motor.
http://www.lextreme.com/forums/attachment.php?attachmentid=9703&stc=1&d=1252364975