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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.

What boost level is safe for a stock RB26DETT?

The factory RB26DETT runs around 10-11 psi (0.7 bar) from the stock ceramic twin turbos. Most tuners consider 14-16 psi (0.95-1.1 bar) the safe ceiling on stock internals with upgraded turbos and a proper tune, producing 350-400 whp. Beyond that, forged pistons, rods, and a head stud kit are strongly recommended. The RB26 block is robust; the stock rod bolts and head gasket are the weak points at elevated power levels.

What is the RB26DETT engine?

The RB26DETT is Nissan's 2.6-liter inline-six twin-turbocharged engine used exclusively in the Nissan Skyline GT-R (R32, R33, R34) from 1989 to 2002. It produces a factory-rated 276 hp (actual output is closer to 320-330 hp in stock form due to Japan's gentlemen's agreement cap). The engine is renowned for strong aftermarket support, ability to reliably support 600+ hp with forged internals, and a highly tunable architecture.

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.