Engine Codes

[Yanks0114]

I've always wondered what does 1MZ-FE stand for?

How does toyota determine what code to use?

[Flipside909]

I've always wondered what does 1MZ-FE stand for?

How does toyota determine what code to use?

First number is generation of the engine series.
The next two letters are the engine block series
The latter after the dash is the type of head (F=economy or G=performance)
E = Electronic Fuel Injection

There are 3 generations of the MZ series block. 1MZ - 3.0L, 2MZ 2.5L, 3MZ 3.3L.

If you want more info, it's listed on Toysport.com about the designation of the F and G series heads. I could explain it but the Toysport tech section has it summed up nicely.

[Jackass-Jeff]

http://dreamwater.org/eclipsedevo/enginecodes.html

here's a list of a bunch of import engine codes (lots of toyota) so you can see the "evolution" i guess hahaha

flip missed one, if there's a T post dash, that's turbo

[NASTY]

The latter after the dash is the type of head (F=economy or G=performance)

so why the hell isn't it 1MZ-GE!?

[Jackass-Jeff]

so why the hell isn't it 1MZ-GE!?

I think the "G-Series" was made for engines to have a higher rpm and run n/a. The 1mz-fe has a s/c for it, so that's what it was built to run with.

(Info on the rest of this post is from what I've read about the 4A-GE)The "F-Series" engine has a 22.3 degree valve angle while the "G-Series" has a 50 degree valve angle.

So that whole thing a few months back about a 2az-ge may have just been some thought that some guy had so that he could have his previa (japan) running a 240 hp 2.4L hahaha

[guest]

Kinda of.... The G designation is a performance head design (most of which were designed with Yamaha help). Some of the pervious G engines

4A-ge - old corolla GT-s FX wagon and old MR-2
4A-GZE - the Z stands for supercharged, came in the old MR-2
2JZ-GE - Supra, SC300, IS300, GS300
2JZ-GT(T)E - The T's mean turbo, sometimes you'll see 2 t's because of twin turbo. This came in, of course, the Supra Twin turbo
2ZZ-GE - designed with yamaha, comes in Celica GT-S, and Matrix xr-s, pontiac vibe GT

There was another one in the 91-95 MR-2 i think 5S-GE and 5S-GTE but i'm not sure about this, someone correct me if I'm wrong, it may have been 3S-GE....whatever

[Flipside909]

The latter after the dash is the type of head (F=economy or G=performance)

so why the hell isn't it 1MZ-GE!?

Because the 1MZ-FE was meant to be a V6 with performance and economy. Notice all the G head variant engines are ALL inline either 4 or 6. i.e. JZ series, S series, and etc.

[Flipside909]

The 1mz-fe has a s/c for it, so that's what it was built to run with.


So that whole thing a few months back about a 2az-ge may have just been some thought that some guy had so that he could have his previa (japan) running a 240 hp 2.4L hahaha

Uhh that's wrong. The 1MZ-FE wasn't built around the S/C, the S/C was built for the 1MZ-FE later down the road.

As for turbo, or s/c designations from the FACTORY, either T or Z respectively, that's only given when built straight out...not added on like aftermarket TRD S/C or custom turbo kit.

You could technically call the 5VZ-FE S/C a 5VZ-FZE or 1MZ-FZE but it doesn't come from the factory that way so the designation isn't real.

[Flipside909]

2JZ-GT(T)E - The T's mean turbo, sometimes you'll see 2 t's because of twin turbo. This came in, of course, the Supra Twin turbo

There was another one in the 91-95 MR-2 i think 5S-GE and 5S-GTE but i'm not sure about this, someone correct me if I'm wrong, it may have been 3S-GE....whatever

First off, there is no such thing as a 2JZ-GTTE. If you're confused with Nissan's designation for the Skyline's Twin Turbo (RB26DETT), it' doesn't apply to Toyota. Twin turbo 2JZ-GTE Supra or Aristo was just the 2JZ-GTE. No extra T involved. LOL

5S-GE and 5S-GTE? LOL you obviously don't know your history. Only G head motors for the S block was the 3S-GE and 3S-GTE.

[guest]

Yeah, thats why i said someone correct me if i'm wrong, i knew one of the S series engines had a G head, couldnt remember if it weas the 3 or the 5, thanks for clearing it up , and I know the 2JZ GTE has only one T from toyota, but what people tend to do sometimes (I've seen it in magazines) is put 2 T's making it 2JZ-GTTE (yes as in the nissan engine coding) which is why i mentioned it in case someone saw it in their local issure of super shi....street magizine or something and got confused

[xyntax]

Whats the AZ series and whats the MZ?

[Jai_Jai_Binks]

Only G head motors for the S block was the 3S-GE and 3S-GTE.

I assumed you guys would never mention by personal fav engines!! HAHA

[NASTY]

Whats the AZ series and whats the MZ?

AZ is the one in your car, MZ is the V6

[xyntax]

Whats the AZ series and whats the MZ?

AZ is the one in your car, MZ is the V6

Yes, I noticed that. But what does the A or M or Z really imply? What about the S?

[Flipside909]

Whats the AZ series and whats the MZ?

AZ series = 4cyl
MZ = V6

2AZ=2.4L I4 VVT-i
1MZ=3.0L V6