All cc/min ratings @ 3 bar/43.5 psi
23250-62030 - Gray - 1992-1993 3VZ; all
Air assisted
240cc/min
![Image]()
23250-20010 - Cyan - 1994-1997 A/T 1MZ, 1997-2001 M/T 1MZ
Air assisted
245cc/min
![Image]()
23250-0A010 - Dark Blue - 1998+ A/T only 1MZ, CA spec/2001 50 state
Air assisted (slightly larger air assist hole)
250cc/min
![Image]()
23250-50030 - Pink - 98+ 1UZ/3UZ, A/T only
Air assisted
255cc/min
![Image]()
23250-20030 or 23250-0A020 - Pink - 03+ 3MZ, A/T only
No air assist; Denso fine 12 hole type injector; 50 micrometer fuel particles
255cc/min
![Image]()
23250-46050 - Lt Blue - 93-95 2JZ-GE, CA spec; 96-97 all
Air assisted
- (non CA-spec 93-95 2JZ injectors lack air assist; 23250-46030; 315cc/min)
310cc/min
![Image]()
23250-46090 - Teal - 1998 VVT-i 2JZ-GE
Air assisted
250cc/min
![Image]()
Resistance per the BGB: 13.4-14.2 Ohm @ 68 deg F
My 0A010's flow at 255cc/min after cleaning @ 43psi, or nearly 260cc/min @ 3 bar (43.5 psi). Hmm. Go CA injectors for once! :lol:
-----
Some of the original discussion from the MR2 Board (not MR2OC):
4v6: I wouldnt use an injector that dosent have that air shrouded design because it affects the spray pattern and atomisation characteristics.
Without it the spray ends up on the ports walls.
Jason.MZW20 (me): Except the new 12-hole designs like the 3MZ's (and any new Toyota engine). Unfortunately, these are hard to adapt for use since they are a different design.
The fine 12-hole injector successfully atomizes fuel better than the 2-hole air assisted injector, so Toyota no longer uses air assisted injectors.
I believe this was the injector type co-developed by Toyota, Denso, and Yamaha.
4v6: Thanks for that Jason ive not seen that 12 hole jobby before now - always the last to know (as usual)
JimKing: Continuing this air assisted vs. NOT air assisted question - Among V6 Camry/Solora TRD S/C users it is "common knowledge" that the 7MGE injectors (23250-70080, 315cc) are a good size upgrade for running more than 4psi of boost.
http://www.witchhunter.com/flowdatapix/d2325070080.jpg
Since these are not air-assisted, I would assume this is NOT GOOD INFORMATION? I was about to buy a cheap set of these for use later...
Thanks guys for any input!
[EDIT] Why would a non air-assisted injector used in a 1MZ cause fuel to "end up on port walls"? I would think there would only be a problem in the other direction, i.e. using an air-assisted injector on manifold lacking the air-assist. Wouldn't the 7MGE injector work as well in a 1MZ as in the 7MGE? Do air-assisted injectors just do a better job of atomization in general compared to older non assisted injectors like this 70080? In that case, then I presume a 46050 would be a better upgrade than a 70080 - if you want a ~310cc injector. Maybe marginally better mileage and emissions?
Jason.MZW20: Toyota does claim air assist helps prevent fuel from clinging to the port walls, improves emissions performance, and also idling and overall engine drivability.
Since the older 2-hole non-air assisted injectors lack the air hole just before the injector nozzle, what you'll see, generally, is decreased efficiency and increased emissions - mainly in hydrocarbons, as there will be more unburnt fuel from the larger atomized fuel particles. This is the main reason Toyota's CA emissions 93-95 2JZ-GE adopted an air-assist injector specifically where the non-CA emissions 2JZ-GE did not. The 7MGE injectors will have a spray pattern consistent with older style injectors with less atomization and air-fuel homogenization.
You have to remember that the air assist is actually engine driven air assist (which is why there is a metering device). So, the air going through the air assist hole collides with the fuel particles in the stream just before they reach the 2 holes in the nozzle. This furthers the atomization and mixture of air and fuel even before it is injected into the combustion chamber with the accompanying intake air flow, resulting in greater efficiency. I still don't fully understand the concept behind the reduction of port-wall wetting with these injectors, but maybe someone else can explain that.
Also, Denso's first 12 hole injector (released in 1999), reduced atomized fuel particles to 65 micrometers. They improved that in 2002 to 50 micrometers. I don't believe air assisted injectors achieve that level of performance.
http://www.mr2.com/forums/v6-owners.../v6-owners-group/Toyota-MR2-37777-injector-flow-rates-part-numbers-3vz-1mz.html
Enjoy the information sharing!
23250-62030 - Gray - 1992-1993 3VZ; all
Air assisted
240cc/min
23250-20010 - Cyan - 1994-1997 A/T 1MZ, 1997-2001 M/T 1MZ
Air assisted
245cc/min
23250-0A010 - Dark Blue - 1998+ A/T only 1MZ, CA spec/2001 50 state
Air assisted (slightly larger air assist hole)
250cc/min
23250-50030 - Pink - 98+ 1UZ/3UZ, A/T only
Air assisted
255cc/min
23250-20030 or 23250-0A020 - Pink - 03+ 3MZ, A/T only
No air assist; Denso fine 12 hole type injector; 50 micrometer fuel particles
255cc/min
23250-46050 - Lt Blue - 93-95 2JZ-GE, CA spec; 96-97 all
Air assisted
- (non CA-spec 93-95 2JZ injectors lack air assist; 23250-46030; 315cc/min)
310cc/min
23250-46090 - Teal - 1998 VVT-i 2JZ-GE
Air assisted
250cc/min
Resistance per the BGB: 13.4-14.2 Ohm @ 68 deg F
My 0A010's flow at 255cc/min after cleaning @ 43psi, or nearly 260cc/min @ 3 bar (43.5 psi). Hmm. Go CA injectors for once! :lol:
-----
Some of the original discussion from the MR2 Board (not MR2OC):
4v6: I wouldnt use an injector that dosent have that air shrouded design because it affects the spray pattern and atomisation characteristics.
Without it the spray ends up on the ports walls.
Jason.MZW20 (me): Except the new 12-hole designs like the 3MZ's (and any new Toyota engine). Unfortunately, these are hard to adapt for use since they are a different design.
The fine 12-hole injector successfully atomizes fuel better than the 2-hole air assisted injector, so Toyota no longer uses air assisted injectors.
I believe this was the injector type co-developed by Toyota, Denso, and Yamaha.
4v6: Thanks for that Jason ive not seen that 12 hole jobby before now - always the last to know (as usual)
JimKing: Continuing this air assisted vs. NOT air assisted question - Among V6 Camry/Solora TRD S/C users it is "common knowledge" that the 7MGE injectors (23250-70080, 315cc) are a good size upgrade for running more than 4psi of boost.
http://www.witchhunter.com/flowdatapix/d2325070080.jpg
Since these are not air-assisted, I would assume this is NOT GOOD INFORMATION? I was about to buy a cheap set of these for use later...
Thanks guys for any input!
[EDIT] Why would a non air-assisted injector used in a 1MZ cause fuel to "end up on port walls"? I would think there would only be a problem in the other direction, i.e. using an air-assisted injector on manifold lacking the air-assist. Wouldn't the 7MGE injector work as well in a 1MZ as in the 7MGE? Do air-assisted injectors just do a better job of atomization in general compared to older non assisted injectors like this 70080? In that case, then I presume a 46050 would be a better upgrade than a 70080 - if you want a ~310cc injector. Maybe marginally better mileage and emissions?
Jason.MZW20: Toyota does claim air assist helps prevent fuel from clinging to the port walls, improves emissions performance, and also idling and overall engine drivability.
Since the older 2-hole non-air assisted injectors lack the air hole just before the injector nozzle, what you'll see, generally, is decreased efficiency and increased emissions - mainly in hydrocarbons, as there will be more unburnt fuel from the larger atomized fuel particles. This is the main reason Toyota's CA emissions 93-95 2JZ-GE adopted an air-assist injector specifically where the non-CA emissions 2JZ-GE did not. The 7MGE injectors will have a spray pattern consistent with older style injectors with less atomization and air-fuel homogenization.
You have to remember that the air assist is actually engine driven air assist (which is why there is a metering device). So, the air going through the air assist hole collides with the fuel particles in the stream just before they reach the 2 holes in the nozzle. This furthers the atomization and mixture of air and fuel even before it is injected into the combustion chamber with the accompanying intake air flow, resulting in greater efficiency. I still don't fully understand the concept behind the reduction of port-wall wetting with these injectors, but maybe someone else can explain that.
Also, Denso's first 12 hole injector (released in 1999), reduced atomized fuel particles to 65 micrometers. They improved that in 2002 to 50 micrometers. I don't believe air assisted injectors achieve that level of performance.
http://www.mr2.com/forums/v6-owners.../v6-owners-group/Toyota-MR2-37777-injector-flow-rates-part-numbers-3vz-1mz.html
Enjoy the information sharing!
