Is the 2JZ really as strong as people say?

Yes. The 2JZ-GTE has a cast-iron block, forged steel crankshaft, and forged steel connecting rods, all from the factory. The block is closed-deck design, meaning the cylinder walls are supported at both the top and bottom, dramatically increasing rigidity under boost pressure.

The stock bottom end is reliably capable of 700+ hp with appropriate fuelling and tuning. Numerous examples have exceeded 1,000 hp on factory internals. The practical limit for the stock bottom end is generally considered to be around 800 hp for a reliable street car and 1,000+ hp for a drag car that's rebuilt periodically.

This engineering margin was not typical for a mass-production engine in 1993. Toyota designed the 2JZ for durability under forced induction, and the forged rotating assembly, which would normally be reserved for limited-production performance engines, was standard in every 2JZ-GTE.

The head is the weaker link. The stock head gasket and head bolts support factory boost comfortably but become the limiting factor above approximately 500-600 hp. ARP head studs and a multi-layer steel head gasket are the standard upgrades for high-power builds, just as they are on the 7M.

How much does an A80 Supra cost in Australia?

In 2026, Australian market prices are:

• 2JZ-GE NA (auto): $25,000-55,000
• 2JZ-GE NA (manual): $45,000-65,000
• 2JZ-GTE Turbo (auto): $50,000-100,000
• 2JZ-GTE Turbo, V160 manual (driver): $70,000-100,000
• 2JZ-GTE Turbo, V160 manual (good): $100,000-140,000
• 2JZ-GTE Turbo, V160 manual (excellent/low km): $140,000-200,000+
• Concours/time capsule turbo manual: $200,000-300,000+

Prices have risen dramatically since the mid-2010s and show no sign of retreating. The turbo manual is the variant driving the market, automatics and NA models are significantly cheaper but are also appreciating.

Should I buy an automatic and convert it to manual?

This is a common strategy, and it can make financial sense if you're building the car anyway. An automatic turbo A80 is typically $30,000-50,000 cheaper than an equivalent manual. The conversion costs $5,000-10,000 depending on whether you use a V160 Getrag (expensive, correct), R154 (cheaper, adequate for up to ~500 hp), or a Nissan CD009 (modern, available, well-suited to single-turbo conversions).

The catch: a proper auto-to-manual conversion requires more than just swapping the gearbox. You need:

• Manual pedal box and clutch master cylinder
• Clutch hydraulic line and slave cylinder
• Driveshaft (auto and manual driveshafts differ)
• Manual-spec ECU (or ECU reprogramming)
• Speed signal converter (auto and manual use different VSS)
• Console and shift boot
• Neutral safety switch delete or conversion
• Reverse light wiring

A thorough conversion that addresses all electrical integration is worth the investment. A lazy conversion that only does the mechanical swap will have a non-functional speedometer, an ABS light on permanently, and no reverse lights, all of which are roadworthy failures.

What's the difference between the sequential twin-turbo and a single turbo?

Sequential twin-turbo (factory): Uses two small CT-20 turbos in sequence. The primary turbo provides boost from ~2,000 RPM. Above ~4,000 RPM, exhaust is routed to both turbos for full power. This gives quick spool (low lag) at low RPM and strong top-end power. The system is complex, vacuum lines, solenoids, exhaust bypass valves, and a dedicated control strategy in the ECU.

Single-turbo conversion: Replaces both CT-20s with one larger turbo. Simpler system, fewer vacuum lines, no transition logic, fewer failure points. A single turbo of equivalent flow capacity (e.g., Garrett GTX3582R or BorgWarner S362) will have slightly more lag at low RPM but stronger mid-range and top-end power. Most single-turbo A80s produce more peak power than the sequential system because a single larger turbo flows more air at high RPM.

Many owners convert to single turbo for reliability and simplicity. A well-done single-turbo conversion with quality turbo manifold, proper oil and water lines, and a professional tune is arguably more reliable than a 25+ year old sequential system with ageing solenoids and cracked vacuum lines.

The choice depends on your priorities. If you value originality and the smooth factory power delivery, maintain the sequential system. If you want simpler maintenance and more peak power, go single turbo.

What's the deal with the 280 hp gentleman's agreement?

In the late 1980s, Japanese manufacturers informally agreed to limit advertised power output to 280 hp (206 kW) for domestic-market cars. This was partially a response to government concerns about high-speed road safety and partially a gentlemen's agreement to avoid an arms race in published power figures.

The 2JZ-GTE Supra was officially rated at 280 hp for the Japanese domestic market. The actual output, confirmed by independent dynamometer testing worldwide, was approximately 320-330 hp at the flywheel. North American and European models were honestly rated at 320 hp (some markets 326 hp), reflecting the actual output.

The agreement was not legally binding and was eventually abandoned in 2004 when manufacturers began publishing actual figures. But during the 1990s, it meant that every JDM turbo Supra was making approximately 40-50 hp more than the advertised figure, a welcome bonus for buyers.

Can I daily drive an A80 Supra?

Yes, with the right expectations. A well-maintained stock or mildly modified A80 is a practical daily driver:

• The cabin is reasonably spacious for two adults
• The boot is usable for grocery runs and weekend bags
• Visibility is decent by sports car standards
• The ride is firm but not punishing on stock suspension
• The NA model is particularly relaxed as a daily
• The turbo model is comfortable at cruise and explosive when you want it to be

The challenges:

• Fuel economy: 12-16 L/100 km for the turbo. That's $130-170 per tank at current fuel prices.
• Parking anxiety: At $100,000+, every car park is a risk. Door dings, shopping trolleys, and careless drivers are genuine concerns.
• Parts lead time: If something breaks, you may wait weeks for parts. Having a second car is advisable.
• Insurance restrictions: Some agreed-value policies limit annual kilometres or require garaged storage.
• Attention: The A80 attracts attention from other motorists, pedestrians, and occasionally people who want to race at traffic lights. If you want to blend in, this is not the car.

Many A80 owners daily drove their cars through the 2000s and 2010s when they were $20,000-40,000 cars. Now that they're $100,000+ cars, more owners are reserving them for weekend use and special occasions.

How do I know if the turbo system is working correctly?

The sequential twin-turbo system should deliver smooth, progressive boost from approximately 2,000 RPM to redline. Here's what to check:

Healthy sequential system feels like:

• Boost builds smoothly from ~2,000 RPM in the primary turbo range
• No hesitation or flat spot around 3,500-4,500 RPM (the transition zone)
• Boost continues to build strongly above 4,500 RPM as the secondary turbo comes fully online
• Consistent boost pressure at full throttle (no surging or spiking)

Unhealthy sequential system feels like:

• A noticeable "dip" or hesitation at 3,500-4,500 RPM
• Boost that spikes suddenly rather than building progressively
• Different boost levels on different runs (inconsistency)
• A loss of power above 4,000 RPM compared to below 3,000 RPM

If the transition feels rough, the most common causes are (in order of likelihood): cracked vacuum lines, stuck EGCV, failed vacuum solenoid, and worn turbo actuators. Start with the vacuum lines, replacing them all with silicone hose is cheap and solves the problem more often than not.

Is the NA Supra worth buying?

It depends on what you want. The NA A80 with the 2JZ-GE is:

Worth it if:

• You want the A80 body and driving experience at a fraction of the turbo price
• You enjoy grand touring, the NA is a smooth, refined cruiser
• You appreciate the car's design and character more than outright speed
• You want an appreciating asset at a lower entry point (NA values are rising too)

Not worth it if:

• You want turbo performance and plan to convert (sell the NA and buy a turbo instead)
• You're buying purely as an investment (the turbo manual appreciates faster)
• You'll be disappointed by 220 hp in a 1,500 kg car

The NA Supra is a genuinely pleasant car to drive. It's just not the legend. For some people, that's fine. For others, the turbo is the only real Supra.

What's the best single-turbo setup for a street car?

For a daily-driven A80 making 450-550 hp (a very fast street car that's still liveable):

• Turbo: Garrett GTX3582R or BorgWarner S362. Both spool reasonably on the 3.0L 2JZ and make strong mid-range and top-end power.
• Manifold: High-quality tubular manifold (e.g., Full Race, DOC Race, or a quality local fabrication). The manifold quality directly affects spool time and power delivery.
• Intercooler: Front-mount, bar-and-plate design. Minimum 600 x 300 x 76 mm core. Plazmaman or PWR for Australian-made quality.
• Injectors: 1,000 cc (Injector Dynamics ID1050X or Bosch EV14). Gives headroom above the 550 hp target.
• Fuel pump: Walbro 450lph or AEM 340lph in-tank.
• ECU: Haltech Elite or Link G4X. Both are well-supported with base maps for the 2JZ platform.
• Exhaust: 3.5-inch downpipe, 3-inch exhaust system.
• Boost: 18-22 psi on a quality tune.

This setup provides a car that's responsive from 3,000 RPM, pulls hard to redline, and is reliable on a properly maintained tune. Budget $6,000-12,000 for the complete conversion including tuning.

What are the most common scams when buying an A80?

At $100,000+, the A80 market attracts dishonesty. Watch for:

• NA cars dressed as turbos: An NA body with turbo badges, wing, and bumpers. Check the engine, the 2JZ-GE and 2JZ-GTE are visibly different (turbo has visible turbo plumbing, intercooler piping, and different intake manifold).
• Auto cars claimed as factory manual: Check the VIN/chassis number against Toyota's records. The factory build spec is encoded in the chassis. A factory auto that's been converted to manual is worth less than a factory manual.
• Misrepresented mileage: Odometer rollbacks are common on grey imports. The Japanese export certificate should show the mileage at export. Compare this to the current odometer.
• Undisclosed accident damage: At these prices, a proper pre-purchase inspection on a hoist is mandatory. Check for misaligned panels, overspray, fresh underseal over repair welds, and differing paint texture between panels.
• "Numbers matching" claims: Unless the seller can provide Toyota verification of the original build specification, take "numbers matching" claims with scepticism.
• Fake compliance: Some cars in Australia have compliance plates from workshops that are no longer operating. Verify the compliance plate against government records.

How often does the timing belt need replacing?

Every 100,000 km or 7 years, whichever comes first. This is a non-negotiable maintenance item. The 2JZ is an interference engine, if the timing belt breaks, the pistons hit the valves and the engine is destroyed.

When replacing the timing belt, also replace:

• Water pump
• Belt tensioner
• Both idler pulleys
• Thermostat (while the front of the engine is accessible)

Use genuine Toyota or Gates Racing components. The tensioner and idler pulleys have the same service life as the belt, a new belt on old pulleys is a gamble.

Total cost: $800-1,500 including parts and labour. For a car worth $100,000+, this is trivial maintenance. If a seller can't prove the timing belt was done recently, factor it in as day-one maintenance and negotiate accordingly.

Is the V160 Getrag worth the premium over an R154 swap?

The V160 is the "correct" gearbox for the A80 turbo. It's an excellent transmission, strong, precise, and well-matched to the 2JZ. It's also increasingly expensive ($5,000-10,000 secondhand) and its synchros are not cheap to rebuild ($2,000-4,000).

The R154 (from the A70 turbo) is a viable alternative for builds up to ~500 hp. It's cheaper ($1,500-3,000), has good parts availability, and is a known quantity. It's a 5-speed rather than a 6-speed, and the shift quality doesn't match the V160, but it does the job.

The Nissan CD009 (from the 350Z/370Z) is the emerging alternative. It's a modern 6-speed, well-suited to single-turbo 2JZ builds, more available than the V160, and has good aftermarket support for 2JZ bellhousing adapters. Budget $2,000-4,000 for the complete swap.

If you're keeping the car stock or close to it, the V160 is part of the A80 experience and worth preserving. If you're building a 600+ hp car and the V160 is damaged, the CD009 is a practical and increasingly popular alternative.

Are parts getting harder to find?

Engine internals and performance parts: no. The 2JZ has enormous aftermarket support and parts are readily available from suppliers worldwide.

Body-specific parts: yes, and getting worse. Genuine A80 body panels (bumpers, guards, bonnet, rear wing) are increasingly scarce new. Secondhand parts from wreckers command premium prices. The iconic turbo rear wing alone can cost $2,000-5,000 for a genuine unit in good condition.

Interior parts: yes. Dashboards, door cards, centre console trim, and seats in good condition are expensive and scarce. The sticky soft-touch trim issue means even "good condition" secondhand parts may need reconditioning.

Mechanical parts: generally fine. The V160 gearbox is the most expensive mechanical item to source, but it's available. Turbos, clutches, brakes, suspension components, all well-supported by the aftermarket.

The general trend is clear: A80-specific parts (body, interior, trim) are appreciating alongside the cars. Mechanical and performance parts remain affordable due to the 2JZ platform's massive aftermarket.