Supra MK4 JZA80 Complete Guide

What are the most popular JDM cars to import?

The Nissan Skyline GT-R, Toyota Supra MK4, Mazda RX-7 FD, Honda NSX, and Subaru WRX STI are most sought-after. The 25-year rule makes R33 GT-Rs and FD RX-7s currently US-legal.

RB26DETT vs 2JZ-GTE — which engine is better?

The RB26 (Skyline GT-R) revs higher, sounds iconic, and has an incredibly strong bottom end — reliable to 600hp on stock internals. The 2JZ (Supra) is the king of high-horsepower builds — the iron block handles 1,000+ hp with bolt-ons. RB26 is better for balanced performance and all-wheel-drive platforms; 2JZ wins for drag racing and big-turbo builds. Both are legends for good reason.

Is the Toyota Supra JZA80 legal to import to the US?

Yes — all fourth-generation Supras (JZA80, 1993-2002) are now over 25 years old and fully importable under the Show or Display and standard 25-year exemptions. US-market Supras were sold here already, but the coveted JDM twin-turbo 2JZ-GTE models were never officially exported. These can now be imported, titled, and registered in most states as a standard vehicle with no special manufacturer exemption needed.

What makes the 2JZ-GTE engine special?

The 2JZ-GTE is Toyota's 3.0-liter inline-six twin-turbocharged engine used in the JZA80 Supra (1993-2002). Its cast-iron block, oversquare bore, and conservative factory tune (320 hp) make it exceptionally strong on stock internals — 500-600 whp is achievable without opening the engine. The single-turbo conversion is a popular upgrade path. The 2JZ's combination of strength, aftermarket depth, and tunability makes it one of the most iconic performance engines ever built.

What is the 4G63T engine used in?

The 4G63T (turbocharged) powers the Mitsubishi EVO I through IX and the Eclipse GST/GSX. It's a 2.0-liter inline-four known for its tough cast-iron block, strong bottom end on stock internals (reliable to 400 whp with supporting mods), and vast aftermarket. The non-turbo 4G63 is a different animal — for performance purposes "4G63" almost always refers to the turbocharged version. The later EVO X uses a completely different 4B11T engine.

What is the realistic total cost to import a JDM car?

A realistic budget for a complete JDM import includes: auction purchase price, Japanese auction fees and broker fee ($500-$2,000), Japan domestic transport to port ($200-$400), ocean freight ($1,200-$3,000), US customs and port fees ($300-$800), transport to your door ($300-$800), and initial maintenance/registration ($500-$2,000). Add 25-35% on top of the car's hammer price to estimate true landed cost before any repairs or modifications.

What are the ongoing running costs for a JDM car?

JDM sports cars are not cheap daily drivers. Premium fuel, higher insurance premiums (specialty or agreed-value policies), specialist mechanic labor rates, and imported OEM parts (often 20-50% more expensive than domestic equivalents) add up. Turbocharged cars need more frequent oil changes and boost system inspections. Budget $2,000-$5,000+ per year for maintenance on a well-maintained GT-R, RX-7, or Supra above basic car costs.

How do Japanese auction inspection sheets work?

Japanese auction inspection sheets (auction sheets) are standardized condition reports completed by auction house inspectors. They include a diagram of the vehicle with coded marks indicating dents, scratches, rust, and paintwork, interior and exterior grade scores, odometer reading, key count, and notes on mechanical findings. Learning to read common codes (A=scratch, U=dent, W=wave, C=crack, X=needs replacement, XX=severe damage) helps you assess bids accurately.

Are there track events specifically for JDM cars?

Yes — time attack events at tracks like Buttonwillow, Laguna Seca, and Streets of Willow in California frequently attract JDM machinery. Organizations like Global Time Attack and Touge California host events where JDM cars are common. Grassroots Motorsports and SCCA events welcome all cars including JDM imports. Car clubs centered on specific models (GT-R Club, Supra Forums) organize dedicated track days. Checkered Flag events and Japan Car Shows also combine static display with driving demonstrations.

What are the best JDM forums and communities?

Top communities: Skylines Australia (GT-R), R33 GT-R Club, ClubNR (RB-powered cars), NASIOC (Subaru WRX/STI), MitsubishiEvolution.com (EVO), RX7Club.com (RX-7), Supraforums.com, and TaijinSports for general JDM. Reddit communities including r/JDM, r/Nissan, and model-specific subreddits are active. Facebook groups organized by model have large memberships and active marketplaces. Japanese platforms like Minkara document builds and reviews in original Japanese.

Is the Toyota Supra MK5 (A90) a Toyota or BMW?

The A90 Supra is Toyota branded but co-developed with BMW. The chassis is shared with the BMW Z4 G29, the engine is BMW's B58 3.0L turbo inline-six, and the transmission is BMW's ZF 8HP. Toyota contributed the body design and final suspension tuning.

What fluids should I never mix in a Japanese car?

Never mix: different engine oil brands (completeness), universal green coolant with OEM-specific red/blue/pink, DOT 3 brake fluid with DOT 5 silicone-based fluid, standard gear oil with LSD fluid (friction modifier required), automatic transmission fluid between different OEMs (specifications vary). Always check your service manual or use OEM-specified fluids.

Why do Japanese car engines have a 280 HP limit on older models?

The 'gentleman's agreement' was a voluntary industry pact among Japanese manufacturers (1989-2004) to rate all production sports car engines at 280 PS (276 HP) regardless of actual output. This was partly a response to concerns about escalating performance numbers. Cars like the Skyline GT-R and Supra Turbo had actual dyno-measured outputs of 300-330 PS despite the 280 PS factory rating.

Is it worth rebuilding an old Japanese engine?

For iconic chassis like R34 GT-R, Supra MK4, or NSX, absolutely yes — a proper rebuild can add 50-100+ years of reliable life. The rebuild cost ($3,000-8,000 depending on engine) is much less than replacing a complete engine ($10,000-30,000+). Factor in the chassis condition, parts availability, and your ownership timeline before deciding.