In terms of JDM vehicles, two particular engines stand out although they have been sooner than most JDM engines current in trendy autos at this time. The RB sequence and the JZ sequence.

RB Engine Sequence

The RB sequence was in manufacturing from 1985 to 2004 after Nissan cancelled the VG sequence V6. All engines within the RB sequence have been produced as four-stroke inline sixes, the smallest being a 2.0-litre and the most important being a 3.0-litre engine. Engines within the RB sequence are the RB20, RB24, RB25, RB26, RB28, and RB30 with the RB26 being probably the most iconic of all.


This particular engine was first produced by Nissan between 1985 to 2004, the design coming from the earlier L20A engine. It has some normal options with its predecessor, resembling stroke and bore, however a lot of the elements and specs are totally different from the L20A. The RB20 was produced with different specs, and all of them have been (1998cc) 2.0-liter engines with an oil capability of 4.8 quarts. All engines within the RB sequence function forged iron cylinder heads and cylinder blocks with a bore 78mm bore size, 69.7mm bore size. The least highly effective had 93 horsepower, and probably the most highly effective had 212 horsepower with torque starting from 105lb-ft to 195lb-ft when inventory. Valvetrain for the RB20 engines was out there in SOHC (single overhead camshaft) and DOHC (twin overhead camshaft)

Totally different variations of RB20 engine:


This was the primary engine within the RB sequence that includes SOHC expertise with an influence output of 120 horsepower to 140 horsepower at round 5500RPM to 5600RPM, relying on the 12 months of manufacturing.


That is the turbo model of the RB20E engine. After the turbo was added, it boosted at 0.5 bar 7psi with an influence output of between 145 horsepower to 175 horsepower at 5800RPM to 6000RPM. This relied on the 12 months of manufacturing. This engine didn’t have an intercooler and featured SOHC expertise.


This engine featured SOHC expertise with a restyled head, particular person ignition coils, an inlet system with a brand new ECU, restyled connecting rods, and a redesigned crankshaft. Energy output was round 145 horsepower to 160 horsepower, relying on the 12 months of manufacturing.


That is the turbocharged model of the RB20DE with a 0.5 bar (7psi) turbocharger. It options new 270cc gasoline injectors, new pistons, new connecting rods, restyled camshaft, and cylinder head seals. Energy output reached its peak at 220 horsepower for the RB20DET.


It is a racing-oriented model of the RB20DET. It isn’t that a lot totally different from the RB20DET.


This eco-friendly model of the RB20DE might produce round 150-160 horsepower with minor tweaks performed to it.


This was the one engine within the RB20 sequence to make use of LPG (liquefied petroleum fuel) with an influence output of round 150-160 horsepower. This engine additionally options SOHC expertise.

Execs and Cons of the RB20


The RB20 engine was out there for vehicles first produced within the ’80s and ’90s. Its easy design made it a favorite throughout that period because it was simply customizable. Rev-matching functionality, quick camshaft design are among the many options that made vehicles with the RB20 engine promote, and mechanics cherished it rather a lot. The RB20 engine can be praised for its low upkeep prices. If nicely maintained utilizing the proper oil and gasoline, it will probably final for 200,000 to 300,000 miles with no vital points. Tuning an engine usually reduces its lifespan. It is usually the most cost effective engine within the RB sequence


Defective ignition coils, which led to misfires if not modified. It is suggested that it is best to change ignition coils for the RB20 engines after round 45,000-60,000 miles. Decrease torque figures in low rpm figures, and unhealthy gasoline consumption.


That is the rarest engine within the RB sequence and was manufactured utilizing totally different components from the RB sequence. For instance, the engine block was from an RB25DE(T), the cylinder head was from an RB30, and the crankshaft was from an RB20DE(T). It additionally used Nissan’s carburetors as an alternative of the ECCS (digital concentrated engine management system) gasoline injection system. This made the RB24 rev larger than the RB25 and the RB30. This engine was not produced for the Japanese market, one of many components that make it uncommon.

This mixture of elements made the RB4 have a 2.4-litre (2428cc) inline-six configuration producing 140 horsepower and 145lb-ft.

RB25 Variations

This 2.5-litre (2498cc) engine within the RB sequence was out there within the following variants.


Featured a DOHC (Twin Overhead Camshaft) expertise with an influence output of 175-210 horsepower relying on the 12 months of manufacturing. Nissan made updates to the engine over time, which allowed all engines within the RB25 sequence to have extra energy and torque at low rpm.


A turbocharged model of the RB5DE got here outfitted with a turbo enabling it to make from round 240-250 horsepower


This particular engine was made to be the primary LPG engine within the RB25 sequence and created from round 190-200 horsepower.


A turbocharged model of the RB25DE-NEO making round 270-280 horsepower.

Word that each one engine variants out there within the RB25 engine all had the DOHC expertise.

Execs and Cons of RB25

  • Just like the RB20, the RB25 engine is simple and cheap to take care of.
  • Simpler to acquire extra energy with inventory engine elements
  • Higher cylinder head design than the RB20
  • Over time it bought higher and higher
  • It costly than the RB20
  • The decrease most RPM restrict
  • The piston ring lands are weak and don’t final for lengthy, particularly after endeavor a mod.
  • Tougher to tune in order for you greater than 400 horsepower


This was the primary engine to have twin turbos organized in parallel within the RB sequence and was out there in two variants. Cylinders stay six in an inline-six configuration and a 2,6-liter (2568cc) displacement.

Totally different variations of RB26 engine:


This variant incorporates a cast-iron block manufactured from forged iron and an aluminum alloy cylinder head. This was the primary time the cylinder head was created from the aluminum alloy in an RB sequence engine. That includes six particular person throttle assemblies as an alternative of a single throttle meeting like different engines within the RB sequence. The 2 turbos are set to restrict increase strain at 0.69 bar (10psi), and a few vehicles with this engine have increase limiters to maintain the increase underneath 0.97 bar (14 psi)

Energy output was between 270-315 horsepower relying on the 12 months of manufacturing as Nissan continued to higher their engines with time.


It is a efficiency model of the RB26DETT developed by Nissan Motorsports (NISMO) for racing teams A and N. The RB26DETT block required an excessive amount of upkeep when in a race automotive, and due to this fact, they designed the N1 block. Additionally they balanced the crankshaft to ease the vibrations making the engine push 7000-8000rpm. The generators within the turbochargers have been totally different within the RB26DETT N1 as they have been manufactured from metal, whereas the RB26DETT have been manufactured from ceramic. This was as a result of generators turning into unreliable when used at excessive rotational speeds.


That is an RB26DETT derived engine and can be referred to as the RB28 used within the Nissan Skyline GT-R (Z tune), producing 510 horsepower and 540lb-ft. It’s boring and stroked by NISMO; thus, it will increase displacement to 2.8 litres and makes use of the identical N-1 block because the RB26DETT N1.

Execs and Cons of RB26


Simply tunable to attain far more horsepower, particularly when you have an N1 block. The inventory block can be not unhealthy.

The power to rev to excessive figures reveals the power of the engine to make extra energy

Particular person throttle our bodies which supply superior throttle response and cut back restrictions via improved airflow


Lesser engine displacement than its competitor, the 2JZ (0.4l much less)

Spare components are costly as they’re uncommon, particularly with the NISMO variations

If you would like extra energy output from an RB6 engine, you’ll find yourself spending extra.

Defective oil pumps in all RB26 trims


This engine was produced to interchange the three.3-litre Holden 202 because it might not cross the emissions necessities check at the moment. It was made in several variations for vehicles that it was put in.

Totally different variations of RB30 engine:


It is a carbureted SOHC engine making 135 horsepower and 165lb-ft, which was particularly put within the Nissan patrol sequence.


Gasoline-injected SOHC engine placing out 155 horsepower, 183lb-ft, and was first put within the VL commodore. This engine was additionally put within the Nissan Skyline R31 GTS1 and GTS2. Nonetheless, the GTS1 made barely much less energy, and most energy output was achieved at larger rpm numbers than within the commodore. The ability output was decreased within the GTS1 as a result of an replace within the exhaust setup however was elevated later, and the GTS1 made 175 horsepower and 190lb-ft however at barely larger rpm figures. The GTS2 made far more, however at even larger rpm figures, it made 190 horsepower and 200lb-ft.  


A turbocharged model of the RB30E utilizing the identical SOHC expertise, making 201 horsepower and 218lb-ft. It was solely made for the VL commodore. Holden had a contract with Nissan to provide engines, and Nissan couldn’t put it in any of their autos.

One other engine within the RB sequence is the RB30ET, but it surely was not produced by Nissan. It’s a turbocharged RB30E with all elements and internals from different RB sequence engines.

Other than the radiator having a low header tank than the cooling system’s highest level, there have been no vital points with the RB30. This was solely a difficulty within the VL commodore as a result of its sloping nostril.

Tuning an RB sequence engine:

RB sequence engines can deal with round 300-600 horsepower with out having to alter the internals. Most tune their engines by including a turbo or a turbo package on non-turbocharged variations and upgrading the turbos to a much bigger measurement for the turbocharged variations. Getting a turbo package can be a viable possibility. As they arrive with new seals, strains, waste gates, and new manifolds, all of that are mounted by a easy bolt-on process. Turbo kits are an inexpensive and simple approach to enhance energy output and throttle response. If you’re trying to push above 600 horsepower, you need to improve the internals, such because the camshaft and cylinder heads. The block may also be reworked to maintain the facility output. One other underrated mod on RB sequence engines is upgrading the gasoline injectors, spark plugs, and air intakes. This will increase the facility output of the engine as a result of improved combustion. If you tune an engine, it will probably cut back its lifespan. That you must fastidiously preserve it in order for you it to final lengthy, service it usually and use the proper oil. Different mods you could undertake to extend the engine’s energy output embody upgrading the downpipe, straight piping, or including a sport/efficiency exhaust. These won’t add a lot energy output, but it surely’s higher than conserving it inventory. Such mods are primarily added after upgrading the turbo for max effectivity.

Should you think about an RB swap make sure the engine and transmission mount are appropriate with the particular engine. You should utilize the transmission that comes with that RB engine or use a appropriate one. Some go to excessive ranges and have a customized transmission constructed for an engine swap which is an efficient however costly possibility. Having a transmission that may deal with the facility output of your engine is among the vital components it is best to think about, additionally upgrading security options resembling upgrading the brakes, which may deal with large engine energy output. Earlier than initiating any engine upgrades, examine the engine’s situation and repair or improve worn-out elements to stop mishaps sooner or later. The aim for which you’ll use your automotive additionally determines the facility output you need to get out of your engine.

JZ Engine Sequence

Other than Nissan’s RB sequence engine, the JZ sequence didn’t have many trims. Although, because it solely had the 1JZ and the 2JZ, each of which had the identical inline-six configurations because the RB sequence engine. This configuration similarity is what makes these engines get in contrast collectively. All JZ sequence engines have been designed for longitudinal mounting; due to this fact, they have been made for rear-wheel-drive use solely. The 2JZ was the attention sweet within the JZ sequence, getting used within the Toyota Supra, which is Toyota’s most iconic JDM automotive.

1JZ Engine

This engine was produced from 1990 to 2007 and had DOHC expertise with two belt-driven camshafts. It had a 2.5-litre (2592cc) displacement and was made in three totally different variations.

Totally different variations of 1JZ engine:


The primary 1JZ engine within the JZ sequence. It produced 170 horsepower and 185lbft and was solely out there in a four-speed automated transmission.


A turbocharged model of the 1JZGE and had three generations to it, every technology having updates over the earlier.

1st technology 1JZTE- Twin-turbocharged engine with a parallel turbo association blowing via a aspect mount. Energy output was at 275 horsepower and 268lb-ft. Turbo generators have been ceramic, and due to this fact the turbos have been unreliable at excessive determine RPMs. Turbo failure was additionally an issue as a result of one-way valve, which resulted in blow-by gases moving into the consumption manifold

2nd technology 1JZTE- This model was a 1st technology recall fixing turbo points, however this solely occurred in Japan as this didn’t apply to engines exterior Japan.

The introduction of VVTI and an improved cooling system have been among the many main updates made to the engine.

3rd technology 1JZGTE- had vital updates, however probably the most vital one was it didn’t have twin turbos. This had a single turbo setup and was extra environment friendly as a result of a smaller exhaust port within the head, which spooled the turbo quicker at low rpm figures.

Energy output didn’t change whatever the updates made to all generations of the 1JZTE.


This engine was designed to scale back emissions and gasoline consumption with out affecting efficiency. The numerous change that the 1JZFSE had in comparison with different 1JZ engines is its reworked cylinder head design with a narrow-angle with swirl management valves. This improved the combustion effectivity. Energy output was at 195 horsepower and 183lb-ft

2JZ Engine

This additionally had an inline-six configuration however a bigger displacement 3.0-litre (2997cc) bigger than the 1JZ. It was produced within the following variations.

Totally different variations of 2JZ engine:


This engine had an influence output of 210-230 horsepower and 210-225lb-ft relying on the 12 months of manufacturing. It had an aluminum cylinder head and a cast-iron cylinder block, with VVTI expertise which was launched within the third technology of the 1JZGTE.


Toyota’s 2JZGTE engine was produced to rival Nissan’s RB26DETT engine. It was put later within the Toyota Supra to rival the Nissan skyline GTR R34. It was a twin-turbocharged model of the ZJZGE, which was sequentially organized and featured a side-to-side mounted intercooler. Japanese variations of the 2JZGTE had ceramic generators for the turbo, whereas non-Japanese variations had metal. The ability output for the Japanese mannequin was at 227-275 horsepower and 320-335lb-ft relying on the 12 months of manufacturing. For the non-Japanese market, energy output was at 320 horsepower with the precise torque figures or barely larger than the Japanese market model. The 2JZGTE was out there with a 4-speed automated transmission or a 6-speed handbook transmission


Was solely out there with an automated transmission with the identical options because the 1JZFSE. The identical VVTI expertise within the 2JZGE was additionally used on this engine made 220 horsepower and 220lb-ft.

Execs and Cons of JZ sequence engine


Excessive determine horsepower capabilities

The inline-six configurations are tightly positioned

A solid crankshaft that may maintain large horsepower figures

A sq. bore and stroke


Timing belt failure

The crank pulley got here aside at excessive speeds

Turbo failure within the 1JZTE

Tuning a JZ ENGINE

Naturally aspirated JZ engines are for about 400-650 horsepower with an addition of a turbo or a turbo package and with out altering the internals relying on the engine’s situation. Toyota stored updating the JZ sequence engines, making them higher and extra sturdy over time. This made them a favorite amongst automotive tuners taking the limelight away from the RB sequence engines, particularly the RB26 sequence, the closest competitor, the 2JZ engine. JZ engines are a favorite as a result of giant displacement; they’ve greater than most RB sequence engines, they usually can deal with extra energy with inventory internals. The one factor that’s modified is the turbos. Consumption, crank pulleys, and the timing belt. Upgrading the turbo valve within the 1JZGTE can be a vital tune when you have this engine

In terms of swapping, be sure that the engine and transmission mounts are appropriate. Should you don’t have a transmission that got here with the engine, get a appropriate one or, even higher, get one constructed for the engine that may deal with the engine’s energy output. Additionally, improve the protection options such because the brakes and seat belts. Some even add a roll cage for defense in case of an accident.



Toyotas are constructed to be dependable and so are their engines. The JZ sequence takes the win on this case as it’s extra dependable than the 2JZ. Even the eco-friendly model of the JZ sequence is a lot better than the eco-friendly model of the RB sequence.


Japanese 2JZ engine made extra horsepower, the identical case applies to Nissan. The Australian market RB30 made extra energy than different RB engines made for Nissan’s manufacturing vehicles. The one vital distinction in efficiency is that the JZ sequence engines have a bit of extra torque than the RB sequence. Efficiency-wise the RB26 is intently in contrast with the 2JZ as a result of similarities between the 2 engines. There aren’t any vital variations besides that 2JZ has a balanced energy output even in low determine RPMs.

Tuning functionality

This may be divided into engine element energy and the way a lot energy the inventory internals can maintain.

The 2JZ internals can maintain far more energy with inventory internals than the RB26, because the 2JZ can maintain figures of as much as 800 horsepower with inventory internals. Compared, the RB26 can maintain a most of round 650-700 horsepower. As a result of lesser displacement within the RB26 can maintain a most of about 211-250 hp/l. The 2JZ can maintain a most of 266 hp/l.

Each engine blocks can maintain figures of greater than 1000 horsepower.

Swap and construct

RB engine builds or replacements are far more difficult to seek out and far more costly than JZ components. It’s because only a few RB engines have been shipped out of Japan in comparison with vehicles with JZ engines. JZ engines have been out there in lots of autos shipped out of Japan, thus establishing a marketplace for components and mechanics to be taught and assimilate JZ engines. In addition to the components, shopping for an RB engine is pricey as a result of they’re uncommon, and the homeowners hardly ever promote. More often than not, you’ll have to import it from Japan. The nice factor is that Nissan resumed manufacturing of the perfect RB sequence engine, the RB26DETT, in 2019.


Regardless that the 2JZ has extra efficiency and tuning choices than the RB26, the RB26 continues to be extra interesting. Even different RB sequence engines are extra interesting than engines within the JZ sequence. Principally as a result of aggressive and high-pitched sound they make. The truth that RB engines are uncommon makes them much more cherished, and those that have an RB engine hardly ever let go of it. Within the eyes of a JDM fanatic, an RB sequence engine is a lot better than the 2JZ.


From an engineering and worth perspective, the JZ sequence engines are higher than the RB sequence engines. Nonetheless, the RB sequence engines are extra interesting to JDM fans as a result of their uncommon nature. The vehicles that got here with the RB sequence engine are additionally uncommon and extra enticing to JDM followers as not many have been shipped out of Japan.

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