1GR-FE Engine code breakdown

[XrunnIT]

So I decided to do some hunting on what the Toyota engine code "1GR-FE" really stands for.

1 - 1st Generation (2 denotes 2nd generation, etc)
GR- Engine Series Code/Engine Family (Dual letters started being used for Class/Family series)
- (following the dash refers to engine details)
F - Narrow valve angle, economy oriented engine (as oppose to G for wide valve, performance oriented engine)
E - Electronic fuel injection

More Code break down info

AFTER the hyphon:
A - Valvematic variable lift intake head
B - Twin SU-style side-draft carburetors
C - Carburated / California Emissions Controlled
D - Twin Downdraft carburetors
E - Electronic Fuel injection
F - Economy narrow-angle valve DOHC
G - Performance wide-angle valve DOHC
H - High compression like 9.8:1 (example: 5E-FHE) / High pressure charged (example: 2L-THE)
I - Single-point fuel injection
J - Autochoke (Early models) or unknown pollution control
L - Transverse
M - Philippines' market (meaning unknown)
N - CNG fuel
P - LPG fuel
R - Low Compression (For 87 and below octane fuel)
S - Swirl intake (1980s)
SE - Direct injection (1990s)
T - Turbocharged
U - With Catalytic converter Japan-spec emissions
V - Common Rail Diesel Injection (D-4D)
X - Atkinson cycle (typically also indicates a Hybrid engine, as Toyota only uses the Atkinson cycle with hybrids)
Z - Supercharged

Supposedly same family motors should have interchangeable parts.

So based on this naming convention:
-Supercharged Tacomas = 1GR-FZE
-Turbo'd Tacomas = 1GR-FTE

Note: Other manufacturers may modify the engine after it has left the Toyota factory but the engine still keeps the original Toyota designation. For example, Lotus added a supercharger to the 2ZZ-GE in some versions of the Lotus Elise and Exige but it is still labelled 2ZZ-GE, not 2ZZ-GZE. For Example

• 4A-GE

4 - 4th generation engine in the A engine family
A - The Engine Family it is in
G - Wide-angle dual camshaft
E - Electronically Fuel Injected

• 22R-TEC

22 - 22nd Generation Engine In The R Engine Family
R - The Engine Family it is in
T - Turbocharged
E - Electronically Fuel Injected
C - California Emission Controlled

• Note: Toyota, in 1987, began assigning dual letter engine codes to some of the "engine family" categories in some engine lines, particularly six cylinder models. This can create potential confusion. Eg. 1UZ-FE - This is not a supercharged, narrow angle, fuel injected U-series engine, but a narrow angle, fuel injected UZ-series engine. Confusion is easiest to avoid when using the dash to separate between the engine series and its own characteristics: for instance, 1UZ-FE rather than 1U-ZFE

-quoted from http://en.wikipedia.org/wiki/List_of_Toyota_engines

The most important part of a Toyota engine code is the second character--always a letter--that designates the engine family. A 7M-GTE, for example, is from the M engine family, while a 3S-GTE is from the S engine family. All engines of a particular family will share the same basic architecture, and will have significant parts interchangeability. If there is a Z after the family letter, like the 1ZZ-FE, that simply means there was once another, unrelated engine family with that same letter somewhere in the Toyota empire (including forklifts and heavy trucks) and this is the second time the letter is being used.

The number indicates the generation of the engine. The 7M-GTE represents the seventh major update to the M-series engine, while the 3S-GTE is the third of its family. What constitutes a new generation is not always clear. The 1ZZ-FE in the Corolla, for example, makes 125 hp and has no variable valve timing. The 1ZZ-FE in the base models of the 2000 Celica makes 140 hp using VVT-i, but that change was not enough to designate it a 2ZZ-FE. The 2ZZ-GE is, in fact, the GT-S engine.

After the hyphen, there is some detail information about the engine. Two of the examples so far have GTE after them, meaning they have twin cams with a wide valve angle (that's the "G"), they are turbocharged (that's the "T"), and fuel injected ("E" for Electronic fuel injection). If an engine has twin cams with a narrow valve angle, the G will be replaced with an F, like the 5S-FE from the Camry and last year's Celica, or the 1ZZ-FE in the Corolla or Celica. Generally, in Toyota's world, the F engines are built for economy, and the G engines are built for performance. If the engine uses pushrods or a single overhead cam, there will be nothing in that part of the code.

In the rare case of supercharged engines, the T is replaced with a Z. The first generation MR-2 was available with the supercharged 4A-GZE, for example, which was a supercharged version of the 4A-GE that was in both the MR-2 and Corolla GT-S.

Engines without fuel injection, forced induction, or multiple overhead cams have nothing after the family name. The 2T, for example, is an old, carbureted, pushrod engine from the Corolla.

-quoted from http://matrixowners.com/?showtopic=25966

 

[nine9six]

Nice information!

" Narrow valve angle, economy oriented engine (as oppose to G for wide valve, performance oriented engine)"

:frown:

 

[Tapp]

nice find bro!!:top:

 

[SX TOY]

excellent info thanks now about that R....:hmmmm2:

 

[XrunnIT]

Updated 1st post with more info.

 

[SX TOY]

sweet thanks

 

[Murderface]

So I guess that means I now have a 1GR-FZE:top:

good info always wondered what that all meant

 

[Venomous_X]

Sticky this! I love new info!

 

[SX TOY]

I just read that the R in mr2 meant rear wheel drive. that would make sense for our application as wellhttp://www.celicahobby.com/ubbthreads/showflat.php?Cat=&Number=1870096276&page=0&view=collapsed&sb=2&o=&fpart=1
edit that is the vehicle designation not engine I will continue looking

 

[Grumpy]

^^ M id engine R ear drive 2 seater

 

[Super Werty]

Sweet

What does air injection specifically refer to? I mean, it sounds dumb saying it that way...I've never heard of an air injector.:laugh:

 

[blastap]

secondary air pump maybe. could be a Cali emissions thing

 

[XrunnIT]

Information updated.

:top: