Why the Toyota 2JZ Became a Legend
Toyota built it for a luxury sedan. The Supra made it famous. Tuners discovered just how much power it could handle. More than 30 years later, people are still building them.
Estimated read time: 5 minutes
Mention the 2JZ around car people and most already know what you mean.
Supra.
Big turbo.
Straight-six.
A lot more power than Toyota originally intended.
The engine has become so closely linked to the A80 Supra that it is easy to forget something interesting.
The 2JZ-GTE didn't actually start in the Supra.
It started in a luxury sedan
Toyota introduced the first-generation Aristo in Japan in 1991.
It was a large four-door luxury sedan, not exactly the sort of car you would expect to become the starting point for one of the most famous tuning engines ever made.
But the top version came with a 3.0-litre twin-turbo straight-six called the 2JZ-GTE.
Two years later, Toyota put that engine into the A80 Supra.
That changed things considerably.
So what actually is a 2JZ?
The name is less complicated than it sounds.
The JZ refers to Toyota's engine family.
The G in GTE refers to the performance-oriented cylinder head, T means turbocharged and E refers to electronic fuel injection.
At its core, the 2JZ-GTE is a 3.0-litre, twin-turbocharged, 24-valve straight-six with a cast-iron block.
It also has an 86 mm bore and 86 mm stroke, which makes it a square engine design.
Useful information if you enjoy engine specs.
But none of that really explains why people still get excited when someone opens a bonnet and there is a 2JZ sitting underneath it.
For that, you have to look at how strong Toyota made it.
Toyota built it properly
The 2JZ came from an era when cast-iron engine blocks were still common.
That made it heavy, but it also gave the engine a very strong foundation.
The block, crankshaft and bottom-end design turned out to be capable of handling considerably more power than the engine produced from the factory.
Toyota never designed or advertised the 2JZ as a 1,000-horsepower engine.
It wasn't one.
But tuners quickly realised there was a lot of potential sitting there.
More boost, better fuel systems, improved cooling, larger turbos and proper tuning could take the engine well beyond its original output.
That reputation grew quickly.
And once people started building serious 2JZs, the question stopped being whether the engine had been modified.
It became how much power it made.
The factory twin-turbo setup was clever too
The original 2JZ-GTE used two turbos in a sequential arrangement.
At lower engine speeds, the first turbo did most of the work to improve response.
As the revs climbed, the second turbo came into play.
For an early 1990s road car, it was a sophisticated setup.
But high-power builders often went in a different direction.
One large turbo.
The single-turbo conversion became one of the most recognisable parts of 2JZ tuning.
It simplified the setup and gave builders much more freedom to choose a turbo based on the kind of power and response they wanted.
And from there, the numbers got increasingly silly.
500 horsepower.
1,000 and beyond.
There are plenty of arguments online about what a "stock" 2JZ can handle, and those numbers should always be treated carefully.
Fuel, tuning, boost pressure, engine condition and supporting modifications all matter.
But the engine earned its reputation because the basic architecture gave tuners a very good place to start.
Then came the Supra
The 2JZ probably would have been respected without the Supra.
It probably wouldn't have become quite as famous.
Toyota launched the fourth-generation Supra in 1993.
Rear-wheel drive, available six-speed manual, that huge rear wing, and the 2JZ-GTE sitting under the bonnet of the Turbo model.
It also arrived during one of the great periods of Japanese performance cars.
Nissan had the Skyline GT-R and RB26.
Mazda had the RX-7 and rotary engine.
Mitsubishi had the GTO.
Honda was producing some of the best naturally aspirated engines around.
And Toyota had the Supra.
At the time, they were simply fast Japanese cars.
Nobody really knew what they would become twenty or thirty years later.
Hollywood definitely helped
Then The Fast and the Furious arrived in 2001.
The orange Supra became one of the most recognisable modified cars of the era and introduced the car, and the 2JZ, to an enormous new audience.
But the interesting thing is that the reputation wasn't purely created by a movie.
At the same time, tuners around the world were actually proving what the engine could do.
Supras were running at drag strips.
2JZs were appearing in drift cars.
People were building huge-power street cars.
Then came forums, YouTube and eventually social media.
Dyno videos, build threads, street cars and engine swaps spread everywhere.
The 2JZ was almost perfectly designed for internet car culture before internet car culture really existed.
Why are people still using them?
Engine technology has moved a long way since 1991.
Modern engines are lighter, more efficient and packed with technology the engineers behind the original 2JZ didn't have access to.
There are plenty of newer engines capable of making serious power.
So why are people still building 2JZs?
Partly because they're strong.
Partly because there is an enormous aftermarket.
And partly because more than three decades of tuning means there is a huge amount of knowledge around what works and what doesn't.
But there is also something less technical about it.
The engine has history now.
It has a recognisable sound.
It looks right in a modified engine bay.
And when you see one swapped into something that definitely didn't leave the factory with a Toyota straight-six, you immediately understand what kind of build you're looking at.
It isn't indestructible
The reputation can get exaggerated.
A 2JZ can still break.
Bad tuning can destroy one.
Too much boost, poor fuelling and excessive heat can all cause problems.
And once you start chasing really big numbers, the engine and the rest of the car need serious supporting modifications.
Fuel system.
Cooling.
Engine management.
Gearbox.
Differential.
Brakes.
Tyres.
Making a big number on a dyno is one thing.
Building a car that can reliably use that power is something else entirely.
That is why some of the best 2JZ builds aren't necessarily the ones with the highest horsepower figure.
They're the ones that actually work.
More than just a Supra engine
Maybe that is the biggest part of the 2JZ story.
It stopped being tied to one car a long time ago.
You'll find them in Supras, old Toyotas, BMWs, drift cars, drag cars, time-attack builds and all sorts of engine swaps.
Sometimes mild.
Sometimes completely ridiculous.
And nobody is particularly surprised anymore.
Toyota built a strong 3.0-litre straight-six for a luxury sedan in 1991.
The Supra gave it the right home.
Tuners discovered how much potential it had.
Hollywood introduced it to a much bigger audience.
And the internet took things from there.
More than 30 years later, people are still swapping them, tuning them and arguing about them.
That is probably the best explanation for why the 2JZ matters.
It isn't just an old Toyota engine anymore.
It became part of car culture.
REVVED
For people who get it.
